Answered: root of temperature. At what velocity…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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The airfoil section of the wing of the British Spitfire of World War II fame is an NACA 2213 at the wing root, tapering to an NACA 2205 at the wing tip. The root chord is 8.33 ft. The measured profile drag coefficient of the NACA 2213 airfoil is 0.006 at a Reynolds number of 9 × 10⁶. Consider the Spitfire cruising at an altitude of 19000 ft. Assume that μ varies as the square root of temperature.

At what velocity is it flying for the root chord Reynolds number to be 9 × 10⁶? (Round the final answer to the nearest whole number.)

The velocity at which the spitfire is flying for the root chord Reynolds number to be 9 × 10⁶is ..........ft/s.

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