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UPSC Prelims 2022 Paper-1 📅 05 Jun, 2022

Which one of the following statements best reflects the idea behind the "Fractional Orbital Bombardment System" often talked about in media?

A
(a) A hypersonic missile is launched into space to counter the asteroid approaching the Earth and explode it in space.
B
(b) A spacecraft lands on another planet after making several orbital motions.
C
(c) A missile is put into a stable orbit around the Earth and deorbits over a target on the Earth.
D
(d) A spacecraft moves along a comet with the same speed and places a probe on its surface.
Result Summary
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UPSC Prelims
2022 • 05 Jun, 2022 • Paper-1
Which one of the following statements best reflects the idea behind the "Fractional Orbital Bombardment System" often talked about in media?
Correct Answer
(c) A missile is put into a stable orbit around the Earth and deorbits over a target on the Earth.
Strategic Concept: The Fractional Orbital Bombardment System (FOBS) was originally a Cold War-era military concept designed specifically to bypass traditional e......
Ref/Book : UPSC Prelims 2022
Ref. Subject Science & Technology
Chapter -
Ref. Topic Space Technology
Pg. No -
💡 Analysis & Explanation
Strategic Concept ▼
The Fractional Orbital Bombardment System (FOBS) was originally a Cold War-era military concept designed specifically to bypass traditional early-warning radar systems that look for standard arcs.
Operational Mechanism ▼
Instead of following a highly predictable sub-orbital ballistic trajectory, a nuclear warhead is launched into a stable, low Earth orbit. Before it completes a full revolution (hence the term "fractional"), it purposefully retro-fires and deorbits to strike a target on the ground from an unexpected direction.
Conclusion ▼
Option C perfectly and concisely describes the unique trajectory and attack mechanism of a Fractional Orbital Bombardment System.
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