Publication Date:
2019-07-13
Description:
For lift-fan powered V/STOL aircraft, two unconventional propulsion system types were proposed. The first type uses fans connected by hot gas ducting, and the second type uses fans connected by cross shafting. An analytical study identified the basic steady-state and dynamic characteristics for each type of system. For the gas-coupled system, the control concepts analyzed were variable-area fan turbines and throttling valves in the ducting. For the shaft-coupled system, the control concepts analyzed were variable-pitch fans and variable fan inlet guide vanes. All of these concepts are capable of meeting V/STOL aircraft control moment and transient response requirements when appropriate propulsion controls are used.
Keywords:
AIRCRAFT PROPULSION AND POWER
Type:
NASA-TM-X-73611
,
E-9094
,
V/STOL Conf.; Jun 06, 1977 - Jun 08, 1977; Palo Alto, CA; United States
Format:
application/pdf
