Concept explainers
(a)
The speed of the spacecraft at
Answer to Problem 12.107P
The speed of the spacecraft at
Explanation of Solution
Given information:
If the trajectory is an elliptical orbit,
Angular momentum of a unit mass,
Calculation:
Consider the first transfer elliptical orbit,
Since,
Angular momentum of first elliptical orbit,
Thus, the speed of the spacecraft at
(b)
The amounts by which the speed of the spacecraft should be reduced at
Answer to Problem 12.107P
The speed reduction at point
The speed reduction at point
Explanation of Solution
Given information:
If the trajectory is an elliptical orbit,
Angular momentum of a unit mass,
Calculation:
Consider
Since,
Angular momentum of the
Therefore, the speed reduction at point
The speed at point
Consider the second elliptical orbit.
Since,
Angular momentum of the
Therefore, the speed reduction at point
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Chapter 12 Solutions
Vector Mechanics For Engineers
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