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A pneumatic motor (air motor), or compressed-air engine, is a type of motor which does mechanical work by expanding compressed air. Pneumatic motors generally convert the compressed-air energy to mechanical work through either linear or rotary motion. Linear motion can come from either a diaphragm or piston actuator, while rotary motion is ...
Shaft – The shaft connects the turbine to the compressor, and runs most of the length of the engine. There may be as many as three concentric shafts, rotating at independent speeds, with as many sets of turbines and compressors. Cooling air for the turbines may flow through the shaft from the compressor.
The Turbomeca Palouste is a French gas turbine engine, first run in 1952. [1] Designed purely as a compressed air generator, the Palouste was mainly used as a ground-based aircraft engine starter unit. Other uses included rotor tip propulsion for helicopters.
Compressed air engines reduce the cost of car production, because there is no need to build a cooling system, spark plugs, starter motor, or mufflers. The rate of self-discharge is very low compared to batteries. A fueled, compressed-air vehicle may be left unused for a longer time than an electric car.
The tanks must be designed to safety standards appropriate for a pressure vessel, such as ISO 11439. [6]The pressure vessels or air storage tanks that can be used in compressed-air vehicles can be made for low pressure (9 atm (130 psi)) or high (more than 240 atm (3,500 psi)), and can be made of composite materials like thermoplastic and fiber-reinforced thermoplastics, [7] [8] that means that ...
The air compressed by the compressor bypasses the combustor and turbine section of the engine, where it is mixed with the turbine exhaust. The turbine exhaust can be designed to be fuel-rich (i.e., the combustor does not burn all the fuel) which, when mixed with the compressed air, creates a hot fuel-air mixture which is ready to burn again.
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The compressed air is channeled through the combustors, where it is mixed with fuel and burned, and the resulting combustion gases are expanded through first the gasifier turbine, which is on the same shaft and is used to drive the rotary compressor, then through the power turbine, which is on the output shaft. [1]: 43–44