University | Singapore University of Social Science (SUSS) |
Subject | EAS201: Aerospace Propulsion Assignment |
EAS201: Aerospace Propulsion Assignment, SUSS, Singapore: The polytropic efficiency ππΉ of a fan is a useful parameter to relate the compressor temperature
Question 6
Question 6a
The polytropic efficiency ππΉ of a fan is a useful parameter to relate the compressor temperature ratio to its pressure ratio such that: ππΉ = ππΉ(πΎβ1) (πΎππΉ)β. Show that the fan polytropic efficiency can be expressed as:
Question 6b
A high-bypass-ratio turbofan engine undergoing bench test at maximum power has the following selected data.
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Evaluate the isentropic efficiency and the polytropic efficiency of the fan.
Determine the power imparted to the bypass air.
Question 6b(iii)
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