The axial momentum theory approximation to blade design breaks down when r R becomes too small Use eqs (30 11) and (30 15) to show that the condition KB 2r limits the angle to sin tan c l (1 a) (4a) For the choice of parameters in Figure 30 10 what is the smallest value of r R allowed by this condi...

From eq 3015 and from eq 3011 r v1atan Substit ...

The axial-momentum theory approximation to blade design breaks down when r/R becomes too small. Use eqs. (30.11)

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The axial-momentum theory approximation to blade design breaks down when r/R becomes too small. Use eqs. (30.11)

(1 – a)v 2r tan o = tan(6 + a) : = (1- a) ir %3D

and (30.15)

K 8πα sin o Аст Ac, B

to show that the condition KB < 2πr limits the angle φ to sin φ tan φ < c_l(1 − a)/(4a). For the choice of parameters in Figure 30.10

what is the smallest value of r/R allowed by this condition?

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The Physics of Energy

ISBN: 978-1107016651

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Authors: Robert L. Jaffe, Washington Taylor

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Question Posted: Jan 23, 2019 06:45 AM

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The axial-momentum theory approximation to blade design breaks down when r/R becomes too small. Use eqs. (30.11)

Question:

(1 – a)v 2r tan o = tan(6 + a) : = (1- a) ir %3D K 8πα sin o Аст Ac, B

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From eq 3015 and from eq 3011 r v1atan Substit...View the full answer

The Physics of Energy

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