Fuel Conservation Evaluation of US Army Helicopters. Part 5. AH-1S slight Testing
Final rept. 31 Jul-21 Sep 1982
ARMY AVIATION ENGINEERING FLIGHT ACTIVITY EDWARDS AFB CA
Pagination or Media Count:
The United States Army Aviation Engineering Flight Activity conducted level flight performance tests of the AH-1S Prod helicopter to provide data to determine the most fuel efficient operating conditions. Hot and cold weather test sites were used to extend the range of the advancing tip Mach number data to supplement existing AH-1S performance data. Preliminary analysis of non- dimensional data identifies the effects of compressibility on performance and shows a power penalty of as much as 6 at a high NRtheta. The power required characteristics determined by these tests can be combined with engine performance to determine the most fuel efficient operating conditions.
- Test Facilities, Equipment and Methods