公开(公告)号：US06543717B1

公开(公告)日：2003-04-08

申请号：US09720210

申请日：2000-12-22

申请人： Thierry Le Fur ,  Bernard Debons ,  André LaFond ,  André Dumortier

发明人： Thierry Le Fur ,  Bernard Debons ,  André LaFond ,  André Dumortier

IPC分类号： F42B1066

CPC分类号： F02K9/86 ,  F05D2240/1281

摘要： The thrust device comprises a valve body (20) having a chamber (24) surrounding part of the needle, at least one gas admission opening (27) opening out into the chamber, and a gas outlet opening (25) opening out into the chamber and defined by a wall portion which co-operates with a nose portion (14) of a moving needle (10) to define an outlet section for gas leaving the chamber. Actuator means (40, 41, 43) control the position of the needle in the valve body by acting on a rear end portion of the needle. The nose (14) of the moving needle (10) has an aerodynamic concave profile (15) and the wall portion (29) which defines the outlet (25) from the chamber is shaped in such a manner as to be capable of directing the exiting gases essentially against the concave side of the nose of the needle, which needle acts as the main member for taking up thrust.

摘要翻译： 所述推力装置包括具有围绕所述针的一部分的腔室（24）的阀体（20），至少一个开口到所述腔室中的气体入口（27）和通向所述腔室的气体出口开口（25） 并且由与移动的针（10）的鼻部（14）配合以限定用于离开腔室的气体的出口部分的壁部分限定。 致动器装置（40,41,43）通过作用在针的后端部分来控制针头在阀体中的位置。 移动针（10）的鼻部（14）具有空气动力学凹形轮廓（15），并且从腔室限定出口（25）的壁部分（29）成形为能够引导 离开气体基本上抵靠针头的鼻部的凹面，该针头作为用于承受推力的主要部件。