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1. An airplane flies at a speed of 150 m/s at an altitude of 500 m, where the temperature is 20°C. The plane climbs to 12, 000 m where the temperature is −56.5 °C and levels off at a speed of 600 m/s. Calculate the Mach number for both cases. 2. The Lockheed SR-71 reconnaissance airplane is rumoured to fly at a Mach number of about 3.5 at an altitude of 90, 000 f t. Estimate its flight speed under these conditions.

1. An airplane flies at a speed of 150 m/s at an altitude of 500 m, where the temperature is 20°C. The plane climbs to 12, 000 m where the temperature is −56.5 °C and levels off at a speed of 600 m/s. Calculate the Mach number for both cases. 2. The Lockheed SR-71 reconnaissance airplane is rumoured to fly at a Mach number of about 3.5 at an altitude of 90, 000 f t. Estimate its flight speed under these conditions.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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1. An airplane flies at a speed of 150 m/s at an altitude of 500 m, where the temperature is 20°C. The plane climbs to 12, 000 m where the temperature is −56.5 °C and levels off at a speed of 600 m/s. Calculate the Mach number for both cases.

2. The Lockheed SR-71 reconnaissance airplane is rumoured to fly at a Mach number of about 3.5 at an altitude of 90, 000 f t. Estimate its flight speed under these conditions.

 

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