Low Airspeed Sensor Location Tests AH-1G Helicopter
Abstract
During weapons fire control tests being conducted by Frankford Arsenal, Philadelphia, Pennsylvania, it was necessary to determine the optimum location for an Elliott low airspeed system mounted on an AH-1G helicopter to improve the accuracy of the actual aircraft airspeed signal to the fire control computer. The airspeed system was provided by Frankford Arsenal, and the necessary mounting hardware was constructed by the United States Army Aviation Engineering Flight Activity, Edwards Air Force Base, California. Nine airspeed indicator locations along the fuselage from the engine mount to the forward canopy area were tested. The optimum location tested was at fuselage station 128, water line 104, and buttline -35. The Frankford system was then calibrated at the optimum location, and the electronic linearization circuits were added to the computer. This location for the linearized system provided accurate airspeed information out of ground effect from 15 knots calibrated airspeed (KCAS) rearward to 125 KCAS forward, and lateral airspeed from 28 KCAS left to 25 KCAS in right sideward flight.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1977
- Accession Number
- ADA044327
Entities
People
- Barclay H. Boirun
- Gary E. Hill
- Kenneth R. Ferrell