What is the expected drag force of the model

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The full-scale parachute in the chapter-opener photo had a drag force of approximately 950 lbf when tested at a velocity of 12 mi/h in air at 20°C and 1 atm. Earlier, a model parachute of diameter 1.7 m was tested in the same tunnel.

(a) For dynamic similarity, what should be the air velocity for the model?

(b) What is the expected drag force of the model?

(c) Is there anything surprising about your result to part (b)?

Reference no: EM131150213

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