TY - JOUR
T1 - Prediction and evaluation of the stage-separation compatibility of an internally carried air-launch vehicle
AU - Song, Wei
AU - Ai, Bangcheng
AU - Zhao, Xiaojian
N1 - Publisher Copyright:
© 2020 Elsevier Masson SAS
PY - 2020/10
Y1 - 2020/10
N2 - This work mainly predicts and evaluates the stage-separation compatibility of an internally carried air-launch vehicle by a multi-body separation wind-tunnel free-flight (WTFF) test without restraining the motional freedom. The Mach number is Ma=1.5, and the initial-launch angle of attack is considered to be α0=0° and α0=3°. The result shows that WTFF test is a feasible prediction and evaluation method for the stage-separation compatibility of an ICAL vehicle when the combined vehicle exhibits static stability. The launch-vehicle can be separated safely from the carrier-aircraft and has a good pitch-angle for ignition when α0=0°. However, the launch-vehicle exhibits a large pitch-angle when it separates completely from the carrier-aircraft when α0=3°, which is unacceptable. Different separation velocities have little influence on the stage-separation compatibility of the ICAL vehicle when α0=3°. The stage-separation compatibility of the ICAL vehicle is first investigated by a free-flight technique in a wind-tunnel, which provides a new research idea for interdisciplinary studies of the kinematics and aerodynamics of multi-body systems.
AB - This work mainly predicts and evaluates the stage-separation compatibility of an internally carried air-launch vehicle by a multi-body separation wind-tunnel free-flight (WTFF) test without restraining the motional freedom. The Mach number is Ma=1.5, and the initial-launch angle of attack is considered to be α0=0° and α0=3°. The result shows that WTFF test is a feasible prediction and evaluation method for the stage-separation compatibility of an ICAL vehicle when the combined vehicle exhibits static stability. The launch-vehicle can be separated safely from the carrier-aircraft and has a good pitch-angle for ignition when α0=0°. However, the launch-vehicle exhibits a large pitch-angle when it separates completely from the carrier-aircraft when α0=3°, which is unacceptable. Different separation velocities have little influence on the stage-separation compatibility of the ICAL vehicle when α0=3°. The stage-separation compatibility of the ICAL vehicle is first investigated by a free-flight technique in a wind-tunnel, which provides a new research idea for interdisciplinary studies of the kinematics and aerodynamics of multi-body systems.
KW - Internally carried air-launch vehicle
KW - Multi-body separation
KW - Similarity simulation
KW - Stage-separation compatibility
KW - Wind-tunnel free-flight test
UR - http://www.scopus.com/inward/record.url?scp=85086498007&partnerID=8YFLogxK
U2 - 10.1016/j.ast.2020.106001
DO - 10.1016/j.ast.2020.106001
M3 - Article
AN - SCOPUS:85086498007
SN - 1270-9638
VL - 105
JO - Aerospace Science and Technology
JF - Aerospace Science and Technology
M1 - 106001
ER -