Test Stand Performance of a Convertible Engine for Advanced V/STOL and Rotorcraft Propulsion 872355
A variable inlet guide vane (VIGV) convertible engine that could be used to power future high-speed V/STOL and rotorcraft was tested on an outdoor stand. The engine ran stably and smoothly in the turbofan, turboshaft, and dual (combined fan and shaft) power modes. In the turbofan mode with the VIGV open, fuel consumption was comparable to that of a conventional turbofan engine. In the turboshaft mode with the VIGV closed, fuel consumption was higher than that of present turboshaft engines because power was wasted in churning fan-tip airflow. In dynamic performance tests with a specially built digital engine control and using a waterbrake dynamometer for shaft load, the engine responded effectively to large steps in thrust command and shaft torque.
Citation: McArdle, J., "Test Stand Performance of a Convertible Engine for Advanced V/STOL and Rotorcraft Propulsion," SAE Technical Paper 872355, 1987, https://doi.org/10.4271/872355. Download Citation
Author(s):
Jack G. McArdle
Affiliated:
National Aeronautics and Space Administration, Lewis Research Center, Cleveland, OH
Pages: 12
Event:
SAE International Powered Lift Conference and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Proceedings of the International Powered Lift Conference-P-203
Related Topics:
Fuel consumption
Turbofan engines
Performance tests
Rotary-wing aircraft
Fans
Thrust
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