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FOREWORD In 1978, something wholly unexpected happened at what was then the NASA Lewis (now Glenn) Research Center—a “new” aircraft icing program was started. The story goes something like this: Milt Beheim, chief of the Wind Tunnel and Flight Division, was put in charge of the nearly defunct Icing Research Tunnel (IRT). It was in a state of serious disrepair, and no NASA program needed it. Industry used it sporadically. A propulsion and power laboratory, Lewis Research Center (LeRC) no longer had much interest in aircraft icing. Many influential people at LeRC were veterans of the success- ful NACA icing program of the 1940s and 1950s, and thus thought they had solved the icing problem a long time ago. So what should Milt do with the IRT? In typical Beheim fashion, he researched air- craft icing, studied reports, and contacted U.S. aerospace companies and other civil and military government agencies. With encouragement and help from those contacts, he organized an International Workshop in Aircraft Icing in July 1978 at LeRC. As you will read in this book, the workshop fully endorsed NASA’s getting back into aircraft icing. Times had changed, the participants said. Growing commuter markets insisted on dependable flight schedules; an expanding private aircraft fleet wanted “all weather” capability for their expensive investment; military and civilian helicopters needed rotor-blade ice protection; the large transport aircraft sought more energy- efficient systems; and it was time to apply modern computers and instrumentation to the icing problem. Milt became a believer, and, to the surprise of many old “icingologists,” he won the day by gaining approval to form a new Aircraft Icing Section in his division. Through the competitive process, I was selected to head this new section. Over the next couple of years, we spent many hours visiting the offices at NASA Headquarters seeking funding for the new section. When the opportunity later arose, Milt organized a successful effort to finance the first major upgrade of the IRT. With that upgrade, the IRT went from LeRC’s most humble facility to its most modern wind tun- nel, a prototype for future upgrades to its other tunnels. That first IRT upgrade could not have been more timely. On 13 January 1982, the Air Florida flight 90 accident at Washington National Airport alerted the nation to the lethal hazards of ground icing and influenced NASA’s decision to approve the first vPDF Image | History of NASA Icing Research Tunnel
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