Are There Ways to Speed Up MLB Baseball Games?


The opening ceremonies of the Washington Nationals and the Miami Marlins.

The opening ceremonies in 2014 of the Washington Nationals and the Miami Marlins.

There has been a lot of commentary of late about the length of time being required to play major league baseball games. I know from personal experience that many of the Washington Nationals games are more than three hours in length, and it is not uncommon that game can be hour hours or even longer.

Many people have offered fixes for this problem. Most of them require instituting a clock on various aspects of the game. Those include limiting the seconds between pitches or the time the catcher and pitcher can confer on the mound. Other ideas limit the number of trips coaches and managers can make to the mound, the number of warm-up pitches a reliever can take, or the number of times the infielders can sling the ball around the horn.

Any or all of these, and probably others, might be instituted. I hope MLB does not institute a clock. Baseball is the only major sport without a clock and I would like to keep it that way. But the problem is real; we need to speed up games. Here are five half-baked, screwball, tongue-firmly-in-cheek ideas for how to solve the problem.

1. Eliminate extra innings. In the event of a tie at the end of nine innings there should be a home run derby to decide the game, each side sending its best hitter to take ten batting practice pitches and whoever hits the most out wins the game.

2. Eliminate runaway games. If a team scores nine runs, the game is called at the end of the full inning with the victory going to the highest scorer.

3. Alternatively, any game reaching the four hour mark will be decided by the home run derby discussed above.

4. Another alterative, for any game reaching four hours in duration the mascots from the two teams will race around the field to decide the game.

5. Let the spectators decide the winner, again probably at the four hour mark, by texting their vote for one team or the other based on whatever criteria they choose.

Did I say that these are half-baked, screwball, tongue-firmly-in-cheek ideas? They are. Don’t take them seriously.

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Wednesday’s Book Review: “Historians of the American Frontier”


downloadHistorians of the American Frontier: A Bio-Bibliographical Sourcebook. Edited by John R. Wunder. (Greenwood Press, Westport, Connecticut, 1988. Pp. viii, 827. Bibliography, index. ISBN 0-313-24899-0, $75.00.)

I have been asked recently by several people what they should know about the history of the American frontier, especially in relation to the history of space exploration. Although this is a a book more than 25 years old, it is still a good place to start. Frontier historians have been especially influential interpreters of the American past, and I believe that is one of the reasons that the frontier experience has long been linked to the space arena.

A generation embraced Frederick Jackson Turner’s frontier thesis in the first half of the twentieth century, regardless of its sweeping and not always appropriate generalizations, as the explanation for American uniqueness. Historians of the American Frontier, therefore, is an important attempt to come to grips with the people who made the frontier the most significant field of historical study in the first decades of the twentieth century and of those who have carried on the torch.

John R. Wunder, director of the Great Plains Center at the University of Nebraska when this book was published, presents an impressive set of essays on the lives and works of fifty-seven frontier historians. Each chapter, written by a different specialist, includes a brief biography and a complete summary and analysis of publications. Wunder used four criteria to select the people included in this collection: they had to be dead, had to be recognized as leaders in frontier studies, had to produce broadly defined frontier history, and did not have to be either academically oriented or even historians in any strict sense.

Any collected work’s quality is uneven and this book is no exception. Some of the essays are more challenging than others; I found particularly rewarding Robert P. Swierenga’s entry on James C. Malin. There are, however, two built-in difficulties with collections of this type. First, although Historians of the American Frontier is an important attempt to assess frontier historians and their literature, it views the subject from the perspective of individuals only. There remains, unfortunately, no synthesis of the overall field of study. Each historians’ work stands essentially alone.

Second, historians are unevenly represented. Angie Debo, Le Roy Hafen, Reuben Gold Thwaites, Dale L. Morgan, and even Francis Parkman are not found here while less worthy entries abound. The editor anticipated this criticism by suggesting that no historians were “left out by design or accident” and that a second bio-bibliographical volume would re-solve the omissions. In spite of these criticisms, Wunder has produced a fine book that will be permanently useful to scholars, making readily available in a single volume the personalities and core themes of American frontier historiography. It is a useful addition to the tools of the historians in exploring the American frontier.

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The NACA Makes the Jet Engine both More Efficient and More Powerful


NACA-Research-Memo-235x176I have been working on a general history of the National Advisory Committee for Aeronautics (NACA), the predecessor to NASA, and I have been working on a section of jet research in the 1940s and 1950s. Comments on this draft are welcome.

While the NACA missed the opportunity to pioneer the jet engine, by far the most revolutionary technology applied to aircraft since the Wright brothers, in the period after World War II engineers largely at the Aircraft Engine Research Laboratory in Cleveland transformed aviation with their powerful, efficient, and safe jet engines. The success of jet aircraft in both Germany and Great Britain in World War II spurred American efforts to catch up to this technology. While the NACA had failed to the technology, its leaders were intent on making the technology better and exploiting in every way possible. The Aircraft Engine Research Laboratory, now Glenn Research Center, forwarded a report in December 1945 entitled “Survey of Fundamental Problems Requiring Research” that recommended the expansion of  research on the technologies of turbojets, ramjets, and rockets.

The report concluded: “The simultaneous development of aerodynamic shapes for high-speed flight, and the use of jet-reaction power systems has suddenly placed the aeronautical engineer in position to attain supersonic speeds, but as yet only the outer fringes of research on this mode of transportation have been touched.” The fundamental technology that the NACA pioneered was the axial flow compressor. The first jets were powered by centrifugal compressors; systems that were inefficient and underpowered for anything but the lightest fighter jets. What was needed was axial flow compressors, but the technologies were not well known and most of the baseline knowledge was limited to a few empirical tests over a limited aerodynamic regime that emphasized airfoil research and little else. NACA researchers would change that in the years the followed.

As researchers George E. Smith and David A. Mindell noted, axial flow compression was attained by “stacking a sequence of these airfoil profiles radially on top of one another as if the air flows through the blade row in a modular series of radially stacked two-dimensional blade passages.” The expansion of this approach required a detailed, lengthy, and expensive research agenda only able to be carried out by a government laboratory. Several different efforts emerged at the Lewis Flight Propulsion Laboratory in Cleveland, so named after the passing of the longtime NACA Director of Research in 1948. The contribution was a three-volume “Compressor Bible,” issued in final form in 1956 after a decade of research at Lewis.

The GE J-79 Jet Engine on display at the National Museum of the United States Air Force.

The GE J-79 Jet Engine on display at the National Museum of the United States Air Force.

This study was based on a pain-staking empirical research effort that included wind tunnel research and flight research, as well as theoretical studies. This research set the standard for knowledge about axial-flow compression for more than twenty-five years after its publication. According to Smith and Mindell:

The empirical component of the NACA design method was based primarily on a huge number of cascade performance tests of NACA 65-Series airfoils carried out at Langley.…These data allowed designers first to select preferred airfoil shapes along a blade to achieve a given design performance, including thermodynamic loss requirements, and then to predict the performance of the airfoils at specified off-design operating conditions. In large part because of the availability of this data-base, NACA 65-Series airfoils became the most widely used airfoils in axial compressors.

The knowledge gained through the NACA’s research filtered out of the agency through the usual means of technical reports and personal contacts as well as the departure from the NACA of several key researchers who moved to General Electric and developed axial-flow compressor engines, especially turbofans, into the mainstay of American jet technology. Langley’s Jack Erwin and Lewis’s John Klapproth, Karl Kovach, and Lin Wright departed for GE in 1955 and 1956.

John Blanton of GE Aircraft Engines.

John Blanton of GE Aircraft Engines.

These engineers proved instrumental in designing the path-breaking large axial-flow turbofan, the J-79 military jet engine powering the B-58 Hustler, Lockheed F-104 Starfighter, McDonnell Douglas F-4 Phantom II, and North American A-5 Vigilante, oriented toward performance as high as Mach 2. The commercial equivalent, the CJ805, powered the Convair 880 and 990 airliners. Under the leadership of John Blanton at GE, this team successfully developed a powerful engine that found use on both across a broad spectrum. The NACA’s contribution included not only basic research but design expertise. The role of Lin Wright proved especially critical; he was an African American engineer from Wayne State University in Detroit who worked for a decade at Lewis, and then transitioned to GE just as the Civil Rights Crusade was emerging as a force in American politics. Far from an activist, Wright contributed most to that cause through his excellence as an engineer on the cutting edge of aeronautical research and development.

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The NACA and the Documenting of Progress in Aerodynamics


NACA LogoThe aeronautical research that the NACA between 1915 and 1958 undertook found dissemination in a complex set of technical publications that the agency made available to all on an equal basis. Most NACA research was accomplished “in-house” by scientists or engineers on the federal payroll. Work conducted under research authorizations might be of short-duration or could be years in the accomplishment. Short-duration work was often aimed at resolving a specific technical problem, many being tied to the development of a military aircraft prototype. One example of this approach was the effort to improve the aerodynamic efficiency of aircraft, an especially important activity in World War II as the NACA performed worked on drag cleanup for 23 different military aircraft.

Especially when the research was of long duration the NACA issued “Technical Notes” partway through containing interim results and “Technical Reports” with major research conclusions at the end of the effort. No one and no political issue, old NACA hands recollected, infringed upon the presentation of their findings in the most evenhanded manner possible. Thus they believed that partly for this reason the organization became the premier aeronautical research institution in the world during the 1920s and 1930s.

Many of the longer research projects took years to complete and were redefined and given additional monies repeatedly to pursue technological questions. A good example of a longer-term effort was Research Authorization 201, “Investigation of Various Methods of Improving Wing Characteristics by Control of the Boundary Layer,” signed on January 21, 1927. It provided for broad-based research at NACA on methods for either blowing or sucking the boundary layer along the upper surface of the wings, thus maintaining laminar flow and preventing airflow separation. Research took place between 1927 and 1944, taking a variety of twists and turns. Those efforts were channeled at first toward immediate practical objectives that could be used by industry and other clients. Later the NACA staff pursued other avenues of exploration, and the result was that the NACA was able to greatly advance boundary layer control through modification of airfoil shape, demonstrating the serendipitous nature of research. The boundary layer research by NACA engineers is still being used as the foundation for current research efforts.

As research was being conducted the NACA printed its findings, and this proved to be the most significant output from the agency’s activities. Beginning in the 1920s the NACA issued several types of reports describing research findings:

  • Technical Reports (TR): the most prestigious, most polished, most important, and most widely distributed report, TRs described the final results of a research effort and made “lasting contributions to the body of aeronautical knowledge.”
  • Technical Notes (TN): TNs reported on work in progress, offered interim findings, or served as final reports for less significant research activities.
  • Research Memorandum (RM): introduced in 1946, RMs reported on research undertaken as classified work for the military.
  • Advanced Confidential Reports (ACR): also introduced after World War II, ACRs reported on sensitive military aeronautical subjects such as jet engines, low-drag wings, or investigations of specific military aircraft types.
  • Bulletins: were short progress reports on limited phases of larger research projects.
  • Memorandum Reports (MR): reported on pieces of aeronautical research of interest to a very small group of clients, generally on a specific type of aircraft or engine design.
  • Technical Memoranda (TM): reported on aeronautical research conducted somewhere other than at NACA, often these were translations of technical articles published in a foreign language.

During the existence of NACA, it printed more than 16,000 research reports of one type or another. TRs were publicly available, readily accessible to anyone with a need to know the information. They were distributed to a huge mailing list that included laboratories, libraries, factories, and military installations around the world. They became famous for their thoroughness and accuracy, and became the rock upon which NACA built its reputation as one of the best aeronautical research institutions in the world. Other reports were less widely distributed, but unless classified for security purposes, were available to anyone with an interest.

06_young

Pearl I. Young

The architect of the technical reporting was Pearl I. Young (1895-1968), who came to work at the NACA’s Langley Laboratory in 1922 after graduating with a physics degree from the University of North Dakota. After working in the instrumentation division for a few years she suggested that Langley required someone to oversee the technical reports system, which at that time was in disarray. Young took on that responsibility and led the effort until World War II. She created the multitude of documents issued by the NACA, enforced the NACA style of presentation on authors, ensured technical verisimilitude, and handled document distribution far and wide.

Young preached that knowledge is the end product of a research laboratory, and that accordingly the preparation of the research report must receive special emphasis. He insisted that these documents present their data “tactfully, strategically, and with telling force.” She ensured that all publications were accurate, well organized, and effectively structured. Not to give appropriate attention to the presentation of research would ensure that the report would be neither read nor used. She enforced a harsh clarity on the technical reports process at the NACA, one that quickly paid dividends as the results of the agency’s researchers gained stature around the globe for both their path-breaking results and their effective communication.

Young’s oversight of the technical report program was always exacting, sometimes to the consternation both of NACA engineers who wanted to see their work disseminated promptly and viewed Young’s efforts as bogging down the process, and to industry or military clients who wanted prompt answers to aeronautical problems. She argued that the quality of the final product was more important than the speed with which it appeared; Young had all documents extensively vetted by a panel of engineering peers but as a means of speeding the process she also allowed preliminary reports to circulate to key users. Before a report was final, however, authors made revisions, sometimes extensive revisions, before editorial work was completed on the publication. Young insisted that all reports be “checked and rechecked for consistency, logical analysis, and absolute accuracy.”

Pearl Young went on to other responsibilities during World War II at the NACA’s Cleveland, Ohio, Aircraft Engine Research Center. She eventually moved to Pennsylvania State University to teach engineering physics but returned to NASA in 1958 before retiring in 1961. She commented on many occasions about the noble effort they were engaged in—separating the real from the imagined in flight—adding that “There are just as many aeronautical research problems for you to solve by the application of brains and hard work as there were on the day Orville Wright piloted the first airplane at Kitty Hawk in 1903.”

Orville Wright, Charles Lindbergh, and Howard Hughes were among the attendees at Langley's 1934 Aircraft Manufacturers' Conference. Conference guests assembled underneath a Boeing P-26A Peashooter in the Full-Scale Tunnel for this photo. (NASA Phtoto L-9850)

Orville Wright, Charles Lindbergh, and Howard Hughes were among the attendees at Langley’s 1934 Aircraft Manufacturers’ Conference. Conference guests assembled underneath a Boeing P-26A Peashooter in the Full-Scale Tunnel for this photo. (NASA Phtoto L-9850)

The research reported in these technical publications was never presented quickly enough to satisfy clients, although Young always defended the deliberate process she followed to ensure the best possible product. This, however, was nothing compared to the more difficult challenge of remaining an honest broker on research projects. Industry forever wanted to use the NACA as its private R&D facility. Accordingly, the agency had to establish a policy of not working on a specific type of aircraft design, because it smacked of catering to one particular company. Instead, it agreed to work on problems common to all aspects of flight, such as the engine cowling problem for which it received its first Collier Trophy in 1929. It also published research results and distributed reports on an equal basis to all. The NACA often violated these policies when dealing with its principal client, the military services.

Beginning in the 1930s, because of pressure to cut the federal budget, the NACA also established a table of fees for charging private companies, usually those involved in the aeronautical industry, when it pursued research problems they suggested. In this scenario the requestor paid all costs of research. In return, the NACA agreed to give the requestor the results of the research, but also retained the right to release findings it deemed in the national interest. This approach had two negative effects: (1) it allowed larger aircraft firms with money to spend on these problems an opportunity to squeeze out weaker firms who could not compete with cutting edge technology; and (2) it dissuaded some industry leaders from asking the NACA to work on pressing aeronautical problems because of both lack of money and a fear that their investment in the research would be lost when the findings were distributed to the world.

naca-pulsejet-22-tests-coverDuring the course of the NACA’s history between 1915 and 1958 it did very little “project” work of its own, at least as this term has come to be known at NASA. The NACA’s emphasis was on research for the use of outside entities. The principal means of transferring this research knowledge was through a series of reports which could be used as the clients saw fit. An important secondary means of transferring this information was through the annual conferences sponsored by NACA after 1926.

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Wednesday’s Book Review: “The Astronauts Wives Club”


astronaut-wives-clubThe Astronaut Wives Club: A True Story. By Lily Koppel. New York: Grand Central Publishing, 2013. Illustrations (some color), author’s note, acknowledgments, 272 pages, hardcover with dustjacket. $28 USD.

On one level Lily Koppel’s new book is a breezy, entertaining account of the experiences of the wives of the Mercury, Gemini, and Apollo astronauts of the 1960s. The public persona of these women was always “proud,” “thrilled,” and “happy,” their watchwords. Their private well-being, however, was always something less. Read at this level The Astronaut Wives Club: A True Story is a restatement of the lives of many wives of the 1960s whose husbands were in the public eye. They spent their time caring for their families, each other, and supporting the efforts of NASA in reaching for the Moon. Lily Koppel is to be commended for persuading many of the astronauts’ wives, widows, and ex’s to speak at length with her. This book is virtually entirely the result of interviews with a sizable number of them. Gossipy and one-dimensional, with more on fashion and family than on the space program, it is a fine beach read.

Koppel describes how the wives of the astronauts formed their own little clique in Houston in the early 1960s. Originally it was just the wives of the first Mercury seven astronauts, led by “Mother” Marge Slayton, wife of Deke, who commanded the group with an authority that even her husband must have envied. The author does not make this point—perhaps she is unaware of it—but these women transferred their lifestyle from their military experience, replicating its social networks, hierarchies, and priorities at NASA. Anyone who has ever spent any time on a military base understands the responsibilities and authority of the wives of senior officers. Essentially, this called for the wives of officers to set the standard for the moral and social well-being of the base, to serve as a support for group members in both good and difficult times, and to enforce the principles of the organization. That is exactly what the astronauts’ wives did, as relayed in this book.

They also locked arms in situations when threats to the members of the group arose. They could turn, seemingly at a moment’s notice, to offer aid and comfort or sanction and censure as directed by the leaders of the group. This took two central forms as related in The Astronaut Wives Club. First, and Koppel writes about this extensively and with grace, this took place when one of their number suffered the loss of a husband. Astronauts engaged in a risky profession, so did pilots from which the astronaut corps was drawn, and some died in the performance of their duties. Charlie Bassett and Elliot See were killed in an airplane crash. Gus Grissom, Ed White, and Roger Chaffee were killed in their Apollo spacecraft during a ground test. Those events are chronicled here, and in both instances these women spun into action to care for the family, to offer support for the widow, and “to maintain an even keel” (a nautical term used by Alan Shepard in many situations). This was, of course, a situation they knew well from their experiences with their husbands’ active duty flying.

Second, and this was also something they transferred from their military experiences as well, the wives of the astronauts had to deal with their husbands’ infidelities. The opportunities for cheating husbands, however, were greater for the astronauts than for most other families. The astronauts spent a lot of time at Cape Canaveral through the week, leaving their families in Houston. They were celebrities of a pretty high level and found themselves pursued by women at every turn. Some of the husbands, but not all, lost sight of their marriage vows. Indeed, some were notorious womanizers, such as Gus Grissom. Grissom was not alone, and when Apollo 7 astronaut Donn Eisele divorced his wife Harriet to marry another woman that he had been seeing for some time, it pulled the covers off a longtime practice. The other wives surrounded Harriet with loving support and ostracized the second wife. It did not take long for Eisele and the scandal tied to him to be exorcised from the community.

At the same time, so much of the response to infidelity detailed in this book involved women talking about the husbands of others, not their own experience. This type of denial may have served to facilitate the peace of mind of the aggrieved wife, but it suggests that the astronaut corps was more of a Payton Place than anyone seems willing to admit. This is made clear by something mentioned but certainly not dwelt upon, the fact that a large number of the couples divorced, and it appears that some only stayed together as long as they did out of a sense responsibility not to embarrass NASA.

For all of what is positive in this book it is unfortunate that The Astronaut Wives Club is not much more than a beach read; it certainly could have been much more substantive. At no point does the author draw back from the anecdotes to ask larger questions and offer anything approaching a satisfying analysis. While this book is strong on anecdotes, I found myself asking the “so what” question as I read Koppel’s prose. What does it all mean?

It is unfortunate that Koppel did not offer a broader interpretive frame. Perhaps others will be able to use the oral histories that she conducted with the wives as source material for future analyses. In the end the voices of these women represent a valuable addition to what we know about America’s pioneering years of the space program and I congratulate Koppel on assembling those recollections. We do not learn much new that we did not already have a sense of from this book, and that is the real disappointment. It is an opportunity missed.

As it is The Astronaut Wives Club is an engaging, enjoyable book on a subject that has been under-appreciated in the history of the space program. The astronauts’ wives made an important contribution to the success of the effort—of that there is no doubt—but the parameters and the substance of that contribution remains for others to explore. As it is, Lily Koppel performs a good service in raising the consciousness of everyone to this neglected story, sketching out the broad contours of the lives of these women, and explaining how we still have much to learn about the people of NASA during the space race.

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Model Research in the NACA’s Wind Tunnels (And Some Full-Sized Efforts)


Orville Wright, Charles Lindbergh, and Howard Hughes were among the attendees at Langley's 1934 Aircraft Manufacturers' Conference. Conference guests assembled underneath a Boeing P-26A Peashooter in the Full-Scale Tunnel for this photo. (NASA Phtoto L-9850)

Orville Wright, Charles Lindbergh, and Howard Hughes were among the attendees at Langley’s 1934 Aircraft Manufacturers’ Conference. Conference guests assembled underneath a Boeing P-26A Peashooter in the Full-Scale Wind Tunnel for this photo. (NASA Phtoto L-9850)

Nearly thirty years ago historian Alex Roland published a very fine history of the National Advisory Committee for Aeronautics (NACA) with the main title, Model Research. It was an ironic title, cleverly emphasizing the aeronautical investigations that the NACA undertook with wind tunnels. In working on a new, short history of the NACA and NASA and I have come to appreciate the importance of that title. The NACA did much more than work with wind tunnels, but those instruments/facilities certainly enabled its path-breaking research.

The wind tunnels of the NACA, in which models of aircraft could be tested for their flight characteristics, certainly proved critical to the advance of aviation technology in the pre-World War II era. This had been the case for any pioneering aeronautical research prior to the establishment of the NACA, and such remained the same as the history of the agency progressed.

The NACA built its first wind tunnel at the Langley Memorial Aeronautical Laboratory (LMAL) in 1917. It was not much of a tunnel, copying one previously used at the British National Physical Laboratory. Definitely not a world-class facility, the NACA’s first wind tunnel was obsolete before it was even built. Knowing this, the NACA’s primary purpose for this “Model Tunnel” involved obtaining experience in how to use a wind tunnel.

NACA Wind Tunnel No. 1 followed the first attempt; it was a low-speed tunnel with no return circuit for the air passing through the test section. A 200-horsepower electric motor generated airspeeds of 90 mph in the 5-foot-diameter circular test section. Operational in the summer of 1920, it was used for testing models but the results were ineffective and non-duplicable elsewhere. This Wind Tunnel No. 1 also was more useful as a learning experience for agency engineers than anything else.

It was the Variable Density Tunnel at Langley that really set the NACA on a firm footing in terms of ground based research. This success led directly to the establishment of several other wind tunnels at Langley by the latter 1920s. Two were built first. The first had a 5 feet test section tilted at 90 degrees to study aircraft spins. The problem of a spinning aircraft was both common and poorly understood; “tail spins” proved fatal for many pilots of the era. And this tunnel helped aeronautics engineers understand the problem and develop countermeasures for it.

1929 photograph of the Variable Density Tunnel. Left to right: Eastman Jacobs, Shorty Defoe, Malvern Powell, and Harold Turner. In this photo taken on March 15, 1929, a quartet of NACA staff conduct tests on airfoils in the Variable Density Tunnel, which was declared a National Historic Landmark in 1985.

1929 photograph of the Variable Density Tunnel. Left to right: Eastman Jacobs, Shorty Defoe, Malvern Powell, and Harold Turner. In this photo taken on March 15, 1929, a quartet of NACA staff conduct tests on airfoils in the Variable Density Tunnel, which was declared a National Historic Landmark in 1985.

A second tunnel at Langley, a 7 x 10-foot Atmospheric Wind Tunnel (AWT), began operations in 1930. It provided the capability to study high-lift wings and general problems of stability and control in airframes of the 1930s. The AWT established itself almost as immediately as an exceptionally versatile research tool. Four additional wind tunnels followed with nearly the same size and capability. These revolutionized knowledge about airfoil shapes, airframe aerodynamics, guidance and control systems, and drag reduction. It also aided in pursuing understanding of the pressures on airframes, the compressibility problem, and aerodynamic loads and stresses on the aircraft.

Thereafter, the NACA built another wind tunnel to test propellers. The brainchild of Director of Research George W. Lewis new Propeller Research Tunnel (PRT) was large enough to place aircraft with their propellers operating in the test section. Scaling up was no small problem; the NACA has never built a wind tunnel larger than 5 feet in diameter before. The PRT demonstrated its worth almost at once. In addition to propeller research, it could be used for drag research and NASA engineers found that exposed landing gears contributed up to 40 percent of fuselage drag. Retractable landing gear emerged from this project as the state of the art for aircraft seeking greater speeds. PRT engineers also found that that multi-engine aircraft perform best when engine nacelles were built in-line with the wing. These results influenced every major aircraft of the latter 1930s and may be seen in the shape the DC-3 transport, and both the B-17 and B-24 bombers of World War II.

In addition, the NACA built in the middle 1930s its preeminent wind tunnel before World War II, the so-called “Full-Scale Tunnel” (FST). Built under the direction of Smith J. De France, the FST boasted a 30 x 60 feet test section, with an open throat that facilitated the installation of full-size aircraft. Two massive propellers, driven by two 4,000-horsepower electric motors, pushed air through the test section at speeds between 25 and 118 mph. Once completed in 1931, the FST tunnel building offered an imposing site on the Langley campus with its large air handling system and imposing brick office and research structure. Operating until the 1990s, the FST had a profound influence on the course of American aeronautical research and development. Likewise, a 19-foot pressure tunnel also helped to advance the state of the art in 1939 when completed. Virtually every advanced aircraft of World War II was tested in these two tunnels, so were many commercial vehicles and spacecraft from the NASA era.

The 8 Foot High Speed Wind Tunnel at the NACA Langley Aeronautical Laboratory provided the means for testing large models and some full scale components at a simulated speed of 500 miles per hour.

The 8 Foot High Speed Wind Tunnel at the NACA Langley Aeronautical Laboratory provided the means for testing large models and some full scale components at a simulated speed of 500 miles per hour.

Finally, the completion of the NACA’s High Speed Tunnel (HST), with a 22 inch test section, in 1934 enabled engineers to undertake research in the Mach 1 range. Containing a vertical test section, aircraft models were mounted facing downward and a blast of highly pressurized air would provide only a minute of test time to see compressibility flows and aerodynamic flutter on airframes in high speed conditions. This tunnel proved so useful that engineers lobbied for one with a 24-inch test section, put into operation late in 1934. It contained the first Schlieren photography system installed at Langley, allowing engineers to view dynamic airflows near Mach 1. This work eventually made it possible to build 400+ mph fighters for the United States during World War II.

These wind tunnels, from the Variable Density Tunnel to the Full Scale Tunnel and beyond, enabled the NACA to contribute path-breaking research in aeronautics for the United States. They were the instruments that made the agency, which were small and not well-funded, the best in the world at aeronautical R&D by the time of World War II. As historian Deborah G. Douglas concluded in a 1999 essay: “By the late 1920s, the NACA’s Langley Aeronautical Laboratory had begun to earn an international reputation, largely due to the construction of a trio of pioneering wind tunnels (the Variable Density Tunnel that became operational in 1922, the Propeller Research Tunnel in 1927, and the Full Scale Tunnel in 1931).”

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Something Fun for a Friday: “Stairway to Heaven” by Heart


This is a stunning live performance of Led Zeppelin’s “Stairway to Heaven” by Heart at the Kennedy Center Opera House in Washington, D.C., on December 2, 2012. Ann and Nancy Wilson offer a memorable performance. This song features Jason Bonham on drums. He wears a Clockwork Orange bowler hat in honor of his father. Enjoy!

 

 

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Wednesday’s Book Review: “The Spanish Borderlands Frontier”


download (1)The Spanish Borderlands Frontier, 1513-1821. By John Francis Bannon. Tucson: University of New Mexico Press, 1984. (Histories of the American Frontier). ISBN: 0-826-303-09-9. Originally published by New York: Holt, Rinehart, and Winston, 1970.

Originally published by Holt, Rinehart, and Winston in 1970, I first read Father Bannon’s history of The Spanish Borderlands Frontier while in graduate school in 1980. I recently reread it to see if it still offered a useful overview of the subject. It does, despite the publication of David J. Weber’s excellent The Spanish Frontier in North America (Yale University Press, 1992), which covers the same period and location and should be read in conjunction with Bannon’s work. The Spanish borderlands was first denoted by Herbert Eugene Bolton, the great early twentieth century historian of the Spanish experience in North America, as the region originally settled by Spain but later incorporated into the United States. Bannon was one of his last students and the inheritor of his scholarly mantle.

The Spanish Borderlands Frontier presents a balanced and thorough history of Spanish exploration and settlement from Ponce de Leon’s landing in 1513 to the end of Spain’s North American empire in 1821. It is a magisterial textbook that presents an authoritative account of the Spanish colonial period in North America. It focuses largely on the political, economic, and religious activities of the borderlands, and always explores the relationship of the European conquerors to the Native American population. It takes a largely geographical approach, moving from region to region analyzing the development of the borderlands over time.

Father Bannon’s work is still quite excellent and I applaud the University of New Mexico Press’s decision to keep it in print more than forty years after its original publication.

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Curiosity’s Remarkable Findings after Two Years


This self-portrait of Curiosity combines dozens of images to create this self-portrait on Mars, February 3, 2013.

This self-portrait of Curiosity combines dozens of images to create this self-portrait. taken by the rover’s Mars, February 3, 2013.

Since the 1960s humans have been engaged on a concerted effort to understand Mars. The landing of Mars Curiosity on the surface in the early hours of August 6, 2012, is the latest effort to learn about one of our closest neighbors in the solar system. And its success has been remarkable.

NASA has been pursuing a strategy for Mars exploration that may best be characterized with the motto, “Follow the Water.” In essence, this approach noted that life on Earth is built upon liquid water and that any life elsewhere would probably have chemistries built upon these same elements. Accordingly, to search for life on Mars, past or present, NASA’s strategy must be to follow the water. If scientists could find any liquid water on Mars, probably only deep beneath the surface, the potential for life to exist was also present.

The Mars of today, without any evidence of water whatsoever currently on the surface, probably had water flowing freely in its ancient history. Evidence of changes to the planet’s surface from fast flowing water has been collected by many space probes orbiting the planet since the latter 1990s. The spacecraft to open this possibility was Mars Global Surveyor, reaching the planet in 1998 and a new and exciting era of scientific missions to study the red planet. Its discoveries tantalized us about the possibility of life on Mars, at least in the distant past, for there was evidence present that there might actually be water in the substrata of Mars.

But reaching Mars has always been difficult, and globally more missions have failed than have succeeded in accomplishing what they set out to do. Early on, there were spectacular failures, but even in the last fifteen years there have been several failures. Until Curiosity’s successful landing, out of 40 missions, only 16 have been successful. This means that overall any individual Mars mission has a 1 in 3 chance of success. That is not a bad batting average in major league baseball, but for the limited number of chances we have for reaching Mars with individual missions we have to increase our success rate.

With Mars Curiosity’s successful landing on August 6, this new mission represents a major step forward in a long process of Mars exploration. It is important to recognize just how difficult exploration of the red planet has been and continues to be. For one thing, the success of the entry, descent, and landing technology pioneered on this mission will permanently affect how NASA undertakes future Mars efforts. Many were skeptical about the Sky Crane Landing System used here, questioning its complexity, but it proved to be spectacularly effective. This will become a standard approach to touching down on the Martian surface for successively heavier and more capable payloads in the future.

Since landing, Curiosity has made some stunning discoveries. For example, in measuring radiation levels on the surface of the red planets it has found that Martian radiation levels are comparable to those experienced by astronauts aboard the International Space Station. This enhances the possibility that human activities on the surface are possible. Additionally, Curiosity has found beyond any real doubt that there is an ancient streambed where water once flowed roughly knee-deep for thousands of years at a time. In drilling into the soil, Curiosity also spotted some of the key chemical ingredients for life, including sulfur, nitrogen, hydrogen, oxygen, phosphorus and carbon.

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Why Do Academics Blog?


textbook-thumb-200x282-80797There is an interesting article in the journal, Studies in Higher Education, published in 2013 entitled, “Why Do Academics Blog? An Analysis of Audiences, Purposes and Challenges.” Written by Inger Mewburn and Pat Thomson the abstract reads: “Academics are increasingly being urged to blog in order to expand their audiences, create networks and to learn to write in more reader friendly style. This paper holds this advocacy up to empirical scrutiny. A content analysis of 100 academic blogs suggests that academics most commonly write about academic work conditions and policy contexts, share information and provide advice; the intended audience for this work is other higher education staff. We contend that academic blogging may constitute a community of practice in which a hybrid public/private academic operates in a ‘gift economy.’ We note however that academic blogging is increasingly of interest to institutions and this may challenge some of the current practices we have recorded. We conclude that there is still much to learn about academic blogging practices.”

For those interested, a copy of the article is available free from the journal here.

 

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