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When a space shuttle (mass 79,000 kg) returns to Earth from orbit, it enters the atmosphere at an altitude of 100 miles and a speed of 18,000 mi/h, which is gradually reduced to a touchdown speed of 190 knots (= 220 mi/h). What is its total energy (a) at atmospheric entry and (b) at touchdown? See Fig. 13-16. (c) What happens to the "missing" energy?

When a space shuttle (mass 79,000 kg) returns to Earth from orbit, it enters the atmosphere at an altitude of 100 miles and a speed of 18,000 mi/h, which is gradually reduced to a touchdown speed of 190 knots (= 220 mi/h). What is its total energy (a) at atmospheric entry and (b) at touchdown? See Fig. 13-16. (c) What happens to the "missing" energy?

Grade:11

1 Answers

Aditi Chauhan
askIITians Faculty 396 Points
8 years ago
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