1. Aerodynamic performance of a 0.27-scale model of an AH-64 helicopter with baseline and alternate rotor blade sets [microform] / Henry L. Kelley. Kelley, Henry L. [Browse] [Washington, D.C.] : National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Division ; Springfield, Va. : For sale by the National Technical Information Service, 1990. Book, Microform Online Federal Depository Library Program Documents Bookmark
2. Airloads, wakes, and aeroelasticity [microform] / Wayne Johnson. Johnson, Wayne [Browse] Moffett Field, Calif. : National Aeronautics and Space Administration, Ames Research Center, [1990] Book Online Federal Depository Library Program Documents Bookmark
3. Combined effect of matrix cracking and stress-free edge on delamination [microform] / S.A. Salpekar and T.K. O'Brien. Salpekar, Satish A. (Satish Annaji), 1954- [Browse] Hampton, Va. : National Aeronautics and Space Administration, Langley Research Center ; [ St. Louis, MO] : US Army Aviation Systems Command, [1990] Book, Microform Online Federal Depository Library Program Documents Bookmark
4. Computer simulation of gear tooth manufacturing processes [microform] / Dimitri Mavriplis and Ronald L. Huston. Mavriplis, Dimitri [Browse] [Cleveland, Ohio : National Aeronautics and Space Administration, Lewis Research Center ; Springfield, Va. : National Technical Information Service, distributor, 1990] Book Online Federal Depository Library Program Documents Bookmark
5. Determination of depth-viewing volumes for stereo three-dimensional graphic displays [microform] / Russell V. Parrish, Steven P. Williams. Parrish, Russell V. [Browse] Washington, D.C. : National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Division ; [Springfield, Va. : For sale by the National Technical Information Service], 1990. Book, Microform Online Federal Depository Library Program Documents Bookmark
6. Differential equation based method for accurate approximations in optimization [microform] / Jocelyn I. Pritchard and Howard M. Adelman. Pritchard, Jocelyn I. [Browse] Hampton, Va. : National Aeronautics and Space Administration, Langley Research Center ; [St. Louis, MO] : US Army Aviation Systems Command, [1990] Book, Microform Online Federal Depository Library Program Documents Bookmark
7. Fatigue crack initiation and small crack growth in several airframe alloys [microform] / M.H. Swain ... [et al.]. Hampton, Va. : National Aeronautics and Space Administration, Langley Research Center, [1990] Book, Microform Online Federal Depository Library Program Documents Bookmark
8. A flight-dynamic helicopter mathematical model with a single flap-lag-torsion main rotor [microform] / M. D. Takahashi. Takahashi, Marc D. [Browse] Moffett Field, Calif. : NASA Ames Research Center : US Army Aviation Systems Command, Aviation Research and Technology Activity, [1990] Book Online Federal Depository Library Program Documents Bookmark
9. Influence of linear profile modification and loading conditions on the dynamic tooth load and stress of high contact ration gears [microform] / Chinwai Lee ... [et al.] ; prepared for the ASME Mechanism Conference, Chicago, Illinois, September 16-19, 1990. [Washington, D.C.] : NASA ; St. Louis, Mo.] : US Army Aviation Systems Command ; [Springfield, Va. : For sale by the National Technical Information Service, 1990] Book, Microform Online Federal Depository Library Program Documents Bookmark
10. Liquid water content and droplet size calibration of the NASA Lewis icing research tunnel [microform] / Robert F. Ide ; prepared for the 28th Aerospace Sciences Meeting sponsored by the American Institute of Aeronautics and Astronautics, Reno, Nevada, January 8-11, 1990. Ide, Robert F. [Browse] [Washington, D.C.] : NASA ; [St. Louis, Mo.] : US Army Aviation Systems Command ; [Springfield, Va. : For sale by the National Technical Information Service, 1990?] Book, Microform Online Federal Depository Library Program Documents Bookmark
11. Performance data from a wind-tunnel test of two main-rotor blade designs for a utility-class helicopter [microform] / Jeffrey D. Singleton, William T. Yeager, Jr., and Matthew L. Wilbur. Singleton, Jeffrey D. [Browse] [Washington, DC] : National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Division ; [Springfield, Va. : For sale by the National Technical Information Service], 1990. Book, Microform Online Federal Depository Library Program Documents Bookmark
12. Surface pitting fatigue life of noninvolute, low-contact-ratio gears [microform] / Dennis P. Townsend ; prepared for the 26th Joint Propulsion Conference cosponsored by the AIAA, SAE, ASME, and ASEE, Orlando, Florida, July 16-18, 1990. Townsend, Dennis P. [Browse] [Washington, D.C.] : NASA ; [St. Louis, Mo.] : US Army Aviation Systems Command ; [Springfield, Va. : For sale by the National Technical Information Service, 1990] Book, Microform Online Federal Depository Library Program Documents Bookmark
13. Correlation of puma airloads : evaluation of CFD prediction methods / Roger C. Strawn ... [and others]. Moffett Field, Calif. : National Aeronautics and Space Administration, Ames Research Center : US Army Aviation Systems Command, Aviation Research and Technology Activity ; Springfield, Va. : For sale by the National Technical Information Service, [1989] Book Online Marcive GPO Government Documents Bookmark
14. Five year ground exposure of composite materials used on the Bell model 206L flight service evaluation / Donald J. Baker. Baker, Donald J. [Browse] Hampton, Va. : National Aeronautics and Space Administration, Langley Research Center : US Army Aviation Systems Command, Aviation R & T Activity ; Springfield, Va. : For sale by the National Technical Information Service, [1989] Book Online Marcive GPO Government Documents Bookmark
15. Five year ground exposure of composite materials used on the Bell model 206L flight service evaluation [microform] / Donald J. Baker. Baker, Donald J. [Browse] Hampton, Va. : National Aeronautics and Space Administration, Langley Research Center : US Army Aviation Systems Command, Aviation R & T Activity ; Springfield, Va. : For sale by the National Technical Information Service, [1989] Book, Microform Online Federal Depository Library Program Documents Bookmark
16. An investigation of gear mesh failure prediction techniques [microform] / James J. Zakrajsek. Zakrajsek, James J. [Browse] [Washington, D.C.] : NASA ; [St. Louis, Mo.] : US Army Aviation Systems Command ; [Springfield, Va. : For sale by the National Technical Information Service, 1989] Book, Microform Online Federal Depository Library Program Documents Bookmark
17. Reduction of blade-vortex interaction noise using higher harmonic pitch control / Thomas F. Brooks ... [and others]. Hampton, Va. : National Aeronautics and Space Administration, Langley Research Center ; US Army Aviation Systems Command, Aviation R & T Activity, [1989] Book Online Marcive GPO Government Documents Bookmark
18. Review and analysis of the DNW/model 360 rotor acoustic data base [microform] / R.A. Zinner and D.A. Boxwell, R.H. Spencer. Zinner, R. A. [Browse] Moffett Field, Calif. : National Aeronautics and Space Administration, Ames Research Center : US Army Aviation Systems Command, Aviation Research and Technology Activity ; [Springfield, Va. : For sale by the National Technical Information Service, 1989] Book, Microform Online Federal Depository Library Program Documents Bookmark
19. Scaling effects in the static large defelction response of graphite-epoxy composite beams / Karen E. Jackson, Edwin L. Fasanella. Jackson, Karen E. [Browse] Hampton, Va. : National Aeronautics and Space Administration, Langley Research Center : US Army Aviation Systems Command, Aviation R&T Activity, [1989] Book Online Marcive GPO Government Documents Bookmark
20. Elasticity effects on cavitation in a squeeze film damper undergoing noncentered circular whirl [microform] / David E. Brewe. Brewe, David E. [Browse] [Cleveland, Ohio : NASA Lewis Research Center, 1988] Book Online Federal Depository Library Program Documents Bookmark