Compressible Flow Q3. (a) For a normal shock, derive a relationship for the ratio of the...
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Compressible Flow Q3. (a) For a normal shock, derive a relationship for the ratio of the stagnation pressure downstream to that of static pressure upstream in terms of the upstream Mach number and the ratio of specific heats. (b) An aircraft is cruising at an altitude of 12,000 m where the atmospheric temperature and pressure are 216.7 K and 0.194 bar absolute respectively. A Pitot tube mounted on a wing of the aircraft is used to determine the aircraft speed. The pressure measured by the tube is 1.2 bar absolute. (i) Sketch the streamline pattern in the vicinity of the probe assuming that the nose of the probe is well rounded. (ii) Calculate the Mach number of the aircraft assuming isentropic flow. Why is this Mach number incorrect in this particular case? (iii) Allowing for the effects of non-isentropic flow calculate the correct Mach number of the aircraft. Compressible Flow Q3. (a) For a normal shock, derive a relationship for the ratio of the stagnation pressure downstream to that of static pressure upstream in terms of the upstream Mach number and the ratio of specific heats. (b) An aircraft is cruising at an altitude of 12,000 m where the atmospheric temperature and pressure are 216.7 K and 0.194 bar absolute respectively. A Pitot tube mounted on a wing of the aircraft is used to determine the aircraft speed. The pressure measured by the tube is 1.2 bar absolute. (i) Sketch the streamline pattern in the vicinity of the probe assuming that the nose of the probe is well rounded. (ii) Calculate the Mach number of the aircraft assuming isentropic flow. Why is this Mach number incorrect in this particular case? (iii) Allowing for the effects of non-isentropic flow calculate the correct Mach number of the aircraft.
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Related Book For
Forensic Accounting and Fraud Examination
ISBN: 978-0078136665
2nd edition
Authors: William Hopwood, george young, Jay Leiner
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