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Ten-year ground exposure of composite materials used on the Bell model 206L helicopter flight service program [microform] / Donald J. Baker.
Text
Hampton, Va. : National Aeronautics and Space Administration, Langley Research Center ; [Springfield, Va. : National Technical Information Service, distributor, 1994]
1994
0 resources
Bell Helicopter Advanced Rotorcraft Transmission (ART) program [microform] : final report / [Zachary S. Henry].
Text
[Washington, DC] : National Aeronautics and Space Administration ; [Adelphi, Md.] : U.S. Army Research Laboratory ; [Springfield, Va. : National Technical Information Service, distributor, 1995]
1995
0 resources
Evaluation of navy 9 cst oil in Bell helicopter M412 HP gearboxes [microform] / Zachary S. Henry and William R. Stapper.
Text
[Cleveland, Ohio] : National Aeronautics and Space Administration, Lewis Research Center ; [Springfield, Va. : National Technical Information Service, distributor, 1998]
1998
0 resources
Maneuver acoustic flight test of the Bell 430 helicopter data report / Michael E. Watts [and four others].
Text
Hampton, Virginia : National Aeronautics and Space Administration, Langley Research Center, May 2014.
2014-5
1 resource
Available online
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