| 摘要 |
1,108,991. Fluid-pressure servomotor system; pure fluid amplifiers. HONEYWELL Inc. April 27, 1965 [April 28, 1964], No. 17725/65. Headings G3H and G3P. A pure fluid system controlling the actuation of jacks on an aircraft comprises a sensor 10, Fig. 2, in the form of a vorten rate sensor which produces a pressure differential in lines 21, 22 proportional to the rate of change of pitch which differential is fed through three pure fluid amplifiers 29, 31, 32. The output from the amplifier 32 is adjustable by a pilot's input transducer 14 and the resulting signal is fed through four pure fluid amplifiers 51-54, the output being fed to act on pistons 76, 77 of a fluid actuator controlling an altitude control surface 85. The amplifiers 51-53 are provided with a nulling adjustment which comprises valves 61, 63 in conduits 60, 62 leading from the power nozzle to the main supply line 25. In Fig.4 (not shown) the pressure differential is fed through conduits (21), (22) to act on a power nozzle (30) to produce an amplified output in channels (35), (36) forming the inputs of the next amplifier. A cross-over (23) out of the plane of channels (35), (36) breaks down boundary layer effects. In a modified amplifier used as the final stage, a centre exhaust channel is provided which acts as a vent passage for the fluid from the power device. |
