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The ESA is more _________ since it has no moving parts.

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The ESA is more _________ since it has no moving parts.

(a) Prone to failure

(b) Powerful

(c) Reliable

(d) Accurate

I have been asked this question in an internship interview.

The origin of the question is Electronic Scanned Array Radar in chapter Surveillance Systems, Mapping and Multimode Radars of Avionics

1 Answer

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Right choice is (c) Reliable

Easiest explanation: The antenna reliability is dramatically improved in an ESA since there is no moving parts present. The antennas face one direction but the radar beam can be steered electronically to a very wide angle.

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