quiz-solution13

quiz-solution13 - area (for viscous drag) f = 5 ft 2 . The...

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650:460 Aerodynamics Quiz No. 13 - Solution Prof. Doyle Knight Tel: 732 445 4464, Email: doyleknight@gmail.com OFce hours: Tues and Thur, 4:30 pm - 6:00 pm and by appointment ±all 2009 1
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Quiz No. 13 A Cherokee 180 light civilian aircraft weighs 2400 lbf (fully loaded with 192 lbf fuel). The propeller eFciency η = 1 and the Oswald eFciency factor of the wing e = 0 . 7. The wing planform area is 157.5 ft 2 and the aspect ratio is 5.71. The equivalent ±at plate
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Unformatted text preview: area (for viscous drag) f = 5 ft 2 . The specic fuel consumption is 0.44 lbf/hp hr. Calculate the maximum range in kilometers. Solution The maximum range is R max = 500 SC r eAS f log p 1 1-F P 2 Quiz No. 13 Now SFC must be converted to Nt/kW sec SFC = (0 . 44)(3600)-1 (4 . 44822)(0 . 7456)-1 = 7 . 202 10-4 Nt/kW sec Also F = W F W = 192 2400 = 0 . 08 Thus R max = 1 . 137 10 6 m 3...
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This note was uploaded on 12/15/2009 for the course 650 460 taught by Professor Knight during the Spring '09 term at Rutgers.

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quiz-solution13 - area (for viscous drag) f = 5 ft 2 . The...

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