Title:
PITCHING MOMENT COEFFICIENT AND CENTER-OF-PRESSURE COEFFICIENT CORRECTION METHOD FOR ROCKET PROJECTILE, AND STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2021/098886
Kind Code:
A1
Abstract:
A pitching moment coefficient and center-of-pressure coefficient correction method for a rocket projectile, and a storage medium. The correction method is applicable to rocket projectile type aircrafts having axisymmetric revolution body appearances, tailless layouts or +-tail and x-tail layouts, and comprises the following steps: obtaining aerodynamic characteristic parameters of a rocket projectile in an original configuration (S1); obtaining appearance change data of a rocket projectile type aircraft (S2); constructing a pitching moment coefficient model and a center-of-pressure coefficient model of the rocket projectile in an improved configuration (S3); and inputting the aerodynamic characteristic parameters of the rocket projectile in the original configuration and the shape change data of the rocket projectile type aircraft into the pitching moment coefficient model and the center-of-pressure coefficient model of the rocket projectile in the improved configuration to obtain the pitching moment coefficient and the center-of-pressure coefficient of the rocket projectile in the improved configuration, so as to shorten the design period and reduce the design cost (S4). The correction method can get rid of dependence on a wind tunnel test and a complex calculation process, greatly shorten the design period, reduce the design cost, and improve the design efficiency.
Inventors:
HAO GENG (CN)
LIU ZITENG (CN)
LIU ZITENG (CN)
Application Number:
PCT/CN2020/132800
Publication Date:
May 27, 2021
Filing Date:
November 30, 2020
Export Citation:
Assignee:
LANDSPACE SCIENCE & TECH CO LTD (CN)
International Classes:
G01M9/08; G01M9/00
Foreign References:
| CN111006835A | 2020-04-14 | |||
| CN102941925A | 2013-02-27 | |||
| CN102901613A | 2013-01-30 | |||
| CN106650095A | 2017-05-10 | |||
| CN109540459A | 2019-03-29 | |||
| EP3163250A1 | 2017-05-03 | |||
| US6721682B1 | 2004-04-13 |
Attorney, Agent or Firm:
BEIJING BEIHUI LAW FIRM (CN)
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