AN EVALUATION OF A VARIABLE STABILITY AIRPLANE SIMULATION OF THE X-15
Abstract
The variable stability airplane simulation of the X-15 consisted of two types of simulations: one with fixed stability derivatives, the other with the stability derivatives varying with time. The fixed derivative simulations represented flight at a constant Mach number and altitude, and in the vicinity of a particular angle of attack. The time varying derivatives were used in a representation of X-15 reentry. The fixed derivative simulations proved to be more useful than the reentry simulations. The reentry simulations were somewhat impeded by the requirement to perform special maneuvers in the T-33 to simulate reentry load factors, the performance limitations of the T-33, and the fact that the simulation was restricted to a strictly predetermined flight profile. The Cornell Aeronautical Laboratory T-33 did vary its handling qualities through a range comparable to the X-15, but consistent matches of X-15 characteristics were not obtained because of system malfunctions. These malfunctions were evidently caused by the effect of high ground temperatures on transistorized equipment. The Cornell Aeronautical Laboratory variable stability airplane demonstrated great potential for technical support applications at the Air Force Flight Test Center when systems reliability is improved. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1961
- Accession Number
- AD0264225
Entities
People
- Donald T. Berry
Organizations
- Air Force Test Center