An airplane, of overall length 55 ft, is designed to fl y at680 m/s at 8000-m standard altitude. A one-thirtieth-scalemodel is to be tested in a pressurized helium wind tunnel at20 ° C. What is the appropriate tunnel pressure in atm? Evenat this (high) pressure, exact dynamic similarity is notachieved. Why?

An airplane, of overall length 55 ft, is designed to fl y at680 m/s at 8000-m standard altitude. A one-thirtieth-scalemodel is to be tested in a pressurized helium wind tunnel at20 ° C. What is the appropriate tunnel pressure in atm? Evenat this (high) pressure, exact dynamic similarity is notachieved. Why?

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter13: Temperature, Kinetic Theory, And The Gas Laws

Section: Chapter Questions

Problem 38PE: (a) In the deep space between galaxies, me density of atoms is as low as 106atoms/m3, and me...

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