Consider a propeller designed to always operate at 85% efficiency. Determine and plot the thrust and power per unit disk area (Adisk) of the propeller for: A constant flight speed of u, = 150 m/s, but varying altitude from 0

Consider a propeller designed to always operate at 85% efficiency. Determine and plot the thrust and power per unit disk area (Adisk) of the propeller for: A constant flight speed of u, = 150 m/s, but varying altitude from 0

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter5: Analysis Of Convection Heat Transfer

Section: Chapter Questions

Problem 5.62P

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Concept explainers

Applied Fluid Mechanics

A fluid is a substance that is continuously deformed by the application of shear stress. The rate of deformation of a fluid depends on its viscosity. The fluid tries to flow when it interacts with some other system.

Question

Consider a propeller designed to always operate at 85% efficiency. Determine and plot the
thrust and power per unit disk area (Adisk) of the propeller for:
а.
A constant flight speed of u, = 150 m/s, but varying altitude from 0 <h < 3km. Briefly
comment on the results, what conclusions can you draw?
m
m
b. A constant altitude of h = 1 km, but varying flight speed 50 Sua S 250.

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