HEIGHT VELOCITY DIAGRAM FLIGHT TEST PROJECT ON THE BELL 47G3B HELICOPTER
Abstract
The variation of the Helicopter Height-velocity Diagram with altitude was determined for the Bell 47G-3B aircraft. The FAA analysis of the data resulted in a definite set of empirical mathematical equations. These empirical equations are known as the De Vore equations. Height-Velocity Diagram flight test data recorded at one density altitude can be used to compute the Height-Velocity Envelope at any other density altitude using the De Vore equations. These tests produced a large amount of high quality flight test time history data recorded on instrumentation installed in the test helicopter and on instrumentation installed on the ground at the test site. The Langley Laboratory of NASA is presently in the process of analyzing these data to assist them in producing a mathematical model of the Height Velocity Diagram for autorotation landings for a helicopter using known configuration parameters.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 03, 1963
- Accession Number
- AD0427939
Entities
People
- Gilbert De Vore
- W. J. Hanley
- W. Sanford