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The Effect of Axial Position of Nozzle on Aerodynamic Characteristics of Hybrid Extended Range Projectile
Received date: 2012-11-12
Online published: 2025-05-26
The hybrid base-bleed-rocket extended range projectile is an advanced layout for cluster bomb when it adopts independent layout that the base bleed device is installed on the projectile base and the rocket roll booster is installed on the ogive of projectile head. This type of layout fits cluster bomb in particular. In this paper, how the axial position of the rocket nozzle effects the aerodynamic characteristics of hybrid base-bleed-rocket extended range projectile was investigated through wind tunnel test study. Experimental Mach numbers are 2.0 and 3.0 respectively, the angle of attack range ranges from 0 to +6 degrees, and jet pressure ratio range ranges from 0 to 189.6. The media of jet is cool air, and the inclined angle of nozzle is 30 degrees. The number of nozzle is four. There are three types of axial position of nozzle, which are respectively the projectile shoulder, the projectile arch and the cylinder section of projectile. Experimental results show that the decrease of the drag coefficient and the pitching moment coefficient are maximal, the increase of the lift coefficient and the pressure center coefficient are maximal, and the increase of the base drag coefficient is minimal, when the axial position of nozzle is the projectile shoulder. This type of layout is the most favorable one for flight.
TAN Xianzhong , DING Zesheng , CHEN Shaosong , XU Qin . The Effect of Axial Position of Nozzle on Aerodynamic Characteristics of Hybrid Extended Range Projectile[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2013 , 33(4) : 142 -145 . DOI: 10.15892/j.cnki.djzdxb.2013.04.047
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