TY  - JOUR
PY  - 2007//
TI  - Investigation on the Aerodynamic Performance of an Ejection Seat
JO  - Aeronautical journal
A1  - Chen, DH
A1  - Wu, WH
A1  - Wang, Jing-Jy
A1  - Huang, Yueqin
SP  - 373
EP  - 380
VL  - 111
IS  - 1120
N2  - A unique experimental method is used, in combination with numerical calculation and engineering estimation, to study the aerodynamic performance of an ejection seat at M = 0-60, 0-90 and 1-20, angles-of-attack alpha = 0 degrees-360 degrees, and sideslip angles beta= 0 degrees-90 degrees. Several basic characteristics of the aerodynamic performance are explored. The normal force of the ejection seat varies in a sinusoidal way and the axial force in a cosinoidal way, with the angle-of-attack. The model is statically unstable longitudinally at most attitude angles and the longitudinal stability could be improved by a stabiliser. These characteristics result from a large low pressure area caused by the leeward separation and the windward high pressure area in the ejection seat flow field, at all alpha, due to the blunt configuration. A set of engineering calculation formulae is deduced, based on the aerodynamic characteristics of the ejection seat.     <p>Language: en</p>
LA  - en
SN  - 0001-9240
UR  - http://dx.doi.org/
ID  - ref1
ER  -