Free-Spinning-Tunnel Tests of a 1/24-Scale Model of the North American XP-86 Airplane Page: 3 of 30
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,* *
~t,
* **,
We 9
.9**
9*
* *ratio of distance of center of gravity rearward of
leading edge of mean aerodynamic hord to mean
aerodynamic chord
ratio of distance between center of gravity and thrust
line to mean aerodynamic chord (positive when center
of grvity is below thrust line)Ix Ty, I
I, - IT
mb2
ly - Iz
m2
Iz - x
2
pmoments of inertia about , Y,
respectively, alu-feet2inertia rolling-momnt parameter
inertia pitching-mment parameter
air density, sluge per cubic foot2 NAC A RM No.alD
1
to determine the spin and recovery characteristics of a - cae moel
24
ofthe North American X airplane. The airplane is a sile-ace,
Jet fighter with eptback wing and tail surfaces.
The erect and inverted spin and recovery characteristics of the
mo=el were determne for the design gross weight loading and also for
a a l r ioain In edition, tests were made with slats extended
and with dive flaps xtended Sp -recovery aA ute, pilot-escape,
and ruder-force tests were also made.
SYMBOIS
b wing eet, feet
8 ving area, square feet
ving or elevator chord at any station along the spanf
C
a/5
...................... :.....
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Berman, Theodore. Free-Spinning-Tunnel Tests of a 1/24-Scale Model of the North American XP-86 Airplane, report, May 17, 1948; (https://digital.library.unt.edu/ark:/67531/metadc64620/m1/3/: accessed April 25, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.