The Influence of Roll, Pitch, and Yaw Rate Perturbations on the Alpha-Beta Stability Envelope of the F-4D Aircraft.

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Abstract:

A study was made of the influence of pitch, roll, and yaw rate perturbations on an alpha-beta stability envelope of the F-4D aircraft. The nonlinear equations of motion were integrated numerically and the motion analyzed for stability. The stability criteria were adapted from MIL-F-8785BASG, Military Specification - Flying Qualities of piloted Airplanes. Equilibrium conditions were perturbed and the stability analyses revealed two characteristic motions. The stable motion was a yaw divergence with a minor roll oscillation. Whereas the unstable motion was a divergence in roll. The aircraft appears to enter a steep, rolling dive.

Author(s):
Withers, Douglas R., Jr
Author Organization(s):
AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OHIO SCHOOL OF ENGINEERING
Descriptive Note:
Master's thesis,
Pagination:
0106

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
GAE/MC/75D-10
 Subject Terms
Communities of Interest:
Air Platforms
Descriptor(s):
*AERONAUTICS, *JET FIGHTERS, *SIDESLIP, STABILITY, MANEUVERABILITY, ROLL, PITCH(INCLINATION), YAW, EQUATIONS OF MOTION, FLIGHT CONTROL SYSTEMS, THESES, MATHEMATICAL ANALYSIS, PERTURBATIONS, AVIATION SAFETY, OSCILLATION
Field(s)/Group(s):
Aerodynamics, Fluid Mechanics
Keyword(s):
*Accident prevention, F 4 aircraft, Departure modes
Report Date:
1976 Jan 01