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Flight Evaluation of Various Phugoid Dynamics and 1/Th1 Values for the Landing Approach Task

Report Number: AFFDL TR 66-2
Author: Chalk, Charles
Corporate Author: Cornell Aeronutical Laboratory, Inc.
Laboratory: Air Force Flight Dynamics Laboratory
Date of Publication: 1966-02
Pages: 160
Contract: AF 33(615)-1253
Project: 8219
Task: 821905
AD Number: AD0480187

Longitudinal handling qualities in the landing approach are studied. The T-33 variable stability and variable drag airplane was used in a flight program to evaluate various short period dynamics, phugoid dynamics, drag characteristics and elevator control authority levels. The first phase of the flight program was directed mainly at longitudinal short period dynamics, drag variation with angle of attack and elevator control authority. The second phase of the flight program was directed at phugoid dynamics, short period frequency, elevator control authority and drag characteristics. Drag variations with angle of attack, airspeed and elevator deflection were considered. Pilot ratings and comments are related to the airplane characteristics tests.

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