Engineering, 01.12.2021 04:50 fatty18
A rotor has a rectangular blade planform, a solidity of 0.1, ideal blade twist, and operates in hover at a thrust coefficient of 0.008. By numerical means, using the combined blade element momentum theory (BEMT), compare the predicted inflow ratio across the span of the blade with the exact (analytic) result (uniform inflow result). Plot continuous line for exact result and points (markers) for numerical result. Show also the radial distributions of thrust, induced torque, lift coefficient, and the compare the solutions obtained using the exact theory. Compare the numerical calculations of the integrated thrust and induced power with exact results for this rotor over the range 0 < CT < 0.01.
Answers: 3
Engineering, 04.07.2019 18:10
Aplate clutch has a single pair of mating friction surfaces 250-mm od by 175-mm id. the mean value of the coefficient of friction is 0.30, and the actuating force is 4 kn. a) find the maximum pressure and the torque capacity using the uniform-wear model. b) find the maximum pressure and the torque capacity using the uniform-pressure model.
Answers: 3
Engineering, 04.07.2019 18:10
The higher the astm grain size number, the finer the gran is. a)-true b)-false
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Engineering, 04.07.2019 18:10
True or false (explain) (110)[111] is a slip system in bcc metals . the {111} family in fcc contains 8 planes. resolved shear stress (rss) in single crystals is just related to the applied stress. critical resolved shear stress (crss) in single crystal metals is direct proportional to the number of defects in the structure
Answers: 2
Engineering, 04.07.2019 18:20
Describe one experiment in which the glass transition temperature and melting temperature of a totally amorphous thermoplastic material can be determined. show the relevant experimental results in a diagram which should be properly annotated with the two temperatures clearly marked. what is likely to happen to the curve in the diagram if the amorphous polymer is replaced by a thermosetting type?
Answers: 2
A rotor has a rectangular blade planform, a solidity of 0.1, ideal blade twist, and operates in hove...
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