AEG EFK 61 User Manual download pdf (Page 2)

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TEQH LIBRARY

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m!rIoNAL ADvmoRY cOmITIEm

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FOR AERONAUTICS

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TECHNICAL NOTE

MEAS~ OF FLYING QUALITIES

2899

OF JUTF-471)-30AXWMIE

TO DETERMINE LONGITUDINAL”STABILITY AND CONTROL

AND STALLING CHARACTERISTIC~

By Christopher C. Kraft, Jr., R. Fabian Goranson,

and John P. Reeder

Flight tests have been made -to determine the longitudinal stabili~

and control and stalling cbacteristics of m F-47D-30 airplane. The

results of these tests show the airplane to be unstible with stick free

in any power-on condition even at the most forward center-of-gravi@

position tested: At the re

arward center-of-gravityposition tested the

airplane also had neutral to negative stick-fixed stabili~ with power

on. The characteristics in accelerated flight were acceptdle at the

forward center-of-gravityposition at low and high altitudes except at

high speed where the control-force variations with acceleration were

high.

At the rearwsrd center-of-gravityposition, elevator-force rever-

sals were experienced in turns at low speeds, and the elevator-force

variations with acceleration were low at all the other speeds tested.

Ample stall warning was afforded in all the conditions tested and the

stalling characteristics were satisfactory except in the approach and

wave-off conditions.

Introduction

This paper presents an investigation of the flying qualities of the

F-47D-30 airplane.

Many flying-qualities investigations have been con-

ducted by the National Advisory Comittee for Aeronautics with vario~

types of airplanes and this paper is intended to supplement this infor-

mation.

By correction of these da~a with pilot opinions of these ati-

phes, it has been possible to establish quantitative re@rements for

satisfactory flying qualities such as those presented in reference 1.

%.qersedes therecently declassified NACARMS~A06 for the Air

Materiel Command, ArIW Air Forces, “Flight Measurements of Flying Qml-

ities of a P-47D-30 Airplane (AAF No. 43-34-41)to Determine Longitudinal’

r-?

Stability and Control and Stalling Characteristics” by Christopher C.

I&aft, Jr.,

R. Fabian Goranson, and John P. Reeder, 1948.

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