Navigation body model device

The invention discloses a navigation body model device, which comprises a navigation body model main body and a gas injection system, and is characterized in that the navigation body model main body is fixedly connected with the sliding end of a motor through a connecting piece; the navigation body model device is dragged by the sliding end of the motor to move vertically; the gas injection system simulates the process that the engine injects air into a water medium. The device is used for a motion water outlet test of a navigation body scaling model device, and is used for researching a tail nozzle downward supersonic jet evolution mechanism and navigation body tail load change characteristics in the towing water outlet process of a navigation body. And the rule of influence of factors such as nozzle shape, nozzle inlet pressure and navigation body movement speed on supersonic jet form, evolution and navigation body tail load change is explored. 本发明公开了一种航行体模型装置，包括航行体模型主体和气体喷射系统，航行体模型主体通过连接件与电机滑动端固定连接；航行体模型装置