A Formal Computer Based Design Environment for Aircraft Engine Control Systems

Gray, J.O.; Downes, C.G.

doi:10.1016/s1474-6670(17)54991-5

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2020

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“…e power turbine uses gas expansion to output torque and power, which drives the load on the shaft to work together. When the turbine is started from a standstill, the torque generated by the gas impact and the friction torque of the bearing must satisfy the following relationship [14]:…”

Section: Calculation Modelmentioning

confidence: 99%

Numerical Investigation on the Dynamic Characteristics of an Adjustable Power Turbine Used in Environmental Control System

Zhang

et al. 2020

Complexity

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In this paper, the environmental control system of aircraft driven by a power turbine is further analyzed. Through the numerical simulation of the change of the bleed state under different flight conditions and the change of the flow field under different nozzle opening, the simulation results are verified by the experimental results, and the specific change rules of the power turbine output torque, power, and bleed flow are obtained. It is analyzed quantitatively that adjusting the adjustable nozzle ring can keep the output power stable, widen the flight envelope, and improve the stability of the environmental control system.

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Section: Calculation Modelmentioning

confidence: 99%