Results 81 to 90 of about 7,872 (156)
Review of the transmissions of the Soviet helicopters [PDF]
A review of the following aspects of Soviet helicopter transmissions is presented: transmitted power, weight, reduction ratio, RPM, design configuration, comparison of different type of manufacturing methods, and a description of the materials and ...
Chaiko, Lev I.
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Hybrid geared traction transmissions [PDF]
, 1983 The basic configuration of geared traction drives, geometric and structural factors to be considered in their construction, and current work on hybrid helicopter transmissions rated at 500 and 3000 hp are ...
Nasvytis, A. L., White, G.
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Electronic Components Subsystems and Equipment: a Compilation [PDF]
Developments in electronic components, subsystems, and equipment are summarized. Topics discussed include integrated circuit components and techniques, circuit components and techniques, and cables and ...
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Index to nasa tech briefs, issue number 2 [PDF]
, 1965 Annotated bibliography on technological innovations in NASA space ...
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Forward Flight Rotor Performance at Martian Atmospheric Densities and Sensitivity to Low Reynolds Numbers [PDF]
Much effort has been made to enhance exploration on Mars. In addition to a rover and Mars-orbiting satellites, a Mars Helicopter Technology Demonstrator was proposed by the NASA Jet Propulsion Laboratory (JPL) to augment planetary research for the Mars ...
Perez Perez, Brenda NAtalia
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Assessment of aerodynamic and dynamic models in a comprehensive analysis [PDF]
The history, status, and lessons of a comprehensive analysis for rotorcraft are reviewed. The development, features, and capabilities of the analysis are summarized, including the aerodynamic and dynamic models that were used.
Johnson, W.
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Tradeoff analysis of technology needs for public service helicopters [PDF]
The design requirements for a family or type of Public Service Helicopter (PSH) is examined which will satisfy the needs of municipal and state governments in the following mission areas: Emergency Medical Service--Airborne Rescue Squad; Law Enforcement;
Bauchspies, J. S. +2 more
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Communications techniques and equipment: A compilation [PDF]
This Compilation is devoted to equipment and techniques in the field of communications. It contains three sections. One section is on telemetry, including articles on radar and antennas.
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Performance of Advanced Heavy-Lift, High-Speed Rotorcraft Configurations [PDF]
, 2007 The aerodynamic performance of rotorcraft designed for heavy-lift and high-speed cruise is examined. Configurations considered include the tiltrotor, the compound helicopter, and the lift-offset rotor. Design conditions are hover and 250-350 knot cruise,
Acree, C. W., Jr. +2 more
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Advanced subsonic transport approach noise: The relative contribution of airframe noise [PDF]
With current engine technology, airframe noise is a contributing source for large commercial aircraft on approach, but not the major contributor. With the promise of much quieter jet engines with the planned new generation of high-by-pass turbofan ...
Garber, Donald P. +1 more
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