| 摘要 |
1,119,489. Speedometers. UNITED AIRCRAFT CORP. Dec.2, 1966 [Jan. 4, 1966], No. 53985/66. Heading G1K. [Also in Division G3] A twin vatex angular rate sensor device for sensing rotational movement of a body about an axis X as well as the direction thereof comprises a pair of chambers 10,12 adapted to induce counter-rotating vortex flow of a fluid and sensor means 32 for comparing the vortex outputs 26 for providing a signal in the event of a differential in pressure of flow from the outputs 26, the signal being used to indicate the direction and rate of angular movement of the body. Each chamber comprises a conical chamber 24 in connection with a plen chamber 22 by means of tanjential slots 30. Fluid is fed into the plenum chamber through inlets 18 and depending on the direction of rotation of the shaft the fluid in either chamber 10 or 12 is aided by this rotation so as to induce a greater pressure at one of the outlets 26. A jet of fluid is fed into channel 36 and when the shaft is stationary passes straight through tube 40. However if the pressure of flow is greater at one output than the other, the jet is deflected into one or other of the side tubes 38, 42 depending on the direction of rotation. The device may be used to measure the speed of rotation by determining the volume of fluid rising from the side tube or may be used to control or stabilize the rotation of the body. |
