Add to ORKGNASA-Lewis sponsored two studies to determine the most promising convertible engine concepts for high speed rotorcraft. These studies projected year 2000 convertible technology limited to present gas generator technology. Propulsion systems for utilization on aircraft needing thrust only during cruise and those aircraft needing both power and thrust at cruise were investigated. Mission calculations for the two contractors involved were based upon the fold tilt rotor concept. Analysis and comparison of the General Electric concepts (geared UDF, clutched fan, and Variable Inlet Guide Vane (VIGV) fan), and the Allison Gas Turbine concepts (clutched fan, VIGV fan, variable pitch fan, single rotation tractor propfan, and counter rotation tractor...
Presented at the 5th AIAA/NASA/USAF/ISSMO Symposium on Multidisciplinary Analysis and Optimization, ...
The gas turbine propulsion system has been playing the most significant role in the evolution and de...
A Large Civil Tiltrotor (LCTR) conceptual design was developed as part of the NASA Heavy Lift Rotorc...
Two rotorcraft studies were executed. The goal was to identify attractive techniques for implementin...
A variable inlet guide vane (VIGV) convertible engine that could be used to power future high-speed ...
A variable inlet guide van (VIGV) type convertible engine that could be used to power future high-sp...
The objective of the Rotorcraft Convertible Engine Study was to define future research and technolog...
A variable inlet guide vane (VIGV) convertible engine that could be used to power future high-speed ...
A TF34 turbofan engine is being modified to produce shaft power from an output coupling on the fan d...
NASA Lewis' research and technology efforts applicable to turbomachinery for high-speed flight are d...
NASA-Lewis and NASA-Ames have sponsored a series of studies over the last few years to identify key ...
The feasibility study has shown that a dump/fill type torque converter has excellent potential for t...
An analytical study was conducted to identify rotorcraft concepts best capable of combining a cruise...
A Large Civil Tiltrotor (LCTR) conceptual design was developed as part of the NASA Heavy Lift Rotorc...
NASA has concluded from previous studies that the twin engine tiltrotor is the most economical and t...
Presented at the 5th AIAA/NASA/USAF/ISSMO Symposium on Multidisciplinary Analysis and Optimization, ...
The gas turbine propulsion system has been playing the most significant role in the evolution and de...
A Large Civil Tiltrotor (LCTR) conceptual design was developed as part of the NASA Heavy Lift Rotorc...
Two rotorcraft studies were executed. The goal was to identify attractive techniques for implementin...
A variable inlet guide vane (VIGV) convertible engine that could be used to power future high-speed ...
A variable inlet guide van (VIGV) type convertible engine that could be used to power future high-sp...
The objective of the Rotorcraft Convertible Engine Study was to define future research and technolog...
A variable inlet guide vane (VIGV) convertible engine that could be used to power future high-speed ...
A TF34 turbofan engine is being modified to produce shaft power from an output coupling on the fan d...
NASA Lewis' research and technology efforts applicable to turbomachinery for high-speed flight are d...
NASA-Lewis and NASA-Ames have sponsored a series of studies over the last few years to identify key ...
The feasibility study has shown that a dump/fill type torque converter has excellent potential for t...
An analytical study was conducted to identify rotorcraft concepts best capable of combining a cruise...
A Large Civil Tiltrotor (LCTR) conceptual design was developed as part of the NASA Heavy Lift Rotorc...
NASA has concluded from previous studies that the twin engine tiltrotor is the most economical and t...
Presented at the 5th AIAA/NASA/USAF/ISSMO Symposium on Multidisciplinary Analysis and Optimization, ...
The gas turbine propulsion system has been playing the most significant role in the evolution and de...
A Large Civil Tiltrotor (LCTR) conceptual design was developed as part of the NASA Heavy Lift Rotorc...