suicide burn

既定 英語（イギリス） (en-GB)

名詞

(astronautics) A method of soft-landing a rocket with a well-timed, high-thrust engine burn starting at the last possible second, such that it reaches a vertical speed of 0 at precisely or almost precisely the exact moment that it touches the landing pad and the engine(s) shut down; often done because a particular rocket's absolute minimum thrust is greater than its weight when near-empty, rendering a hover or a constant-speed descent and touchdown impossible. Called a "suicide" burn because of the extreme precision required in timing the burn. If the rocket fires too early (or for too long), it will begin to climb (typically without leaving enough fuel or time to stop/start the engine for a second powered descent attempt). If the engine fires too late or cuts out early, it will impact the landing pad at a higher descent rate than planned, potentially damaging or destroying the rocket and/or pad.

日本語の意味

宇宙船やロケットが、着陸直前に高推力のエンジン燃焼（自殺燃焼）を行い、着地時の垂直速度をほぼ0に落とすことでソフトランディングを実現する手法。

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The lander performed a suicide burn, igniting its engines at the last possible moment so that its vertical speed was zero exactly when it touched the landing pad.

着陸機は最後の瞬間に行う高推力の着陸燃焼を行い、着陸パッドに触れるちょうどその瞬間に垂直速度が0になるようエンジンを点火した。

詳細

意味（1）

(astronautics) A method of soft-landing a rocket with a well-timed, high-thrust engine burn starting at the last possible second, such that it reaches a vertical speed of 0 at precisely or almost precisely the exact moment that it touches the landing pad and the engine(s) shut down; often done because a particular rocket's absolute minimum thrust is greater than its weight when near-empty, rendering a hover or a constant-speed descent and touchdown impossible. Called a "suicide" burn because of the extreme precision required in timing the burn. If the rocket fires too early (or for too long), it will begin to climb (typically without leaving enough fuel or time to stop/start the engine for a second powered descent attempt). If the engine fires too late or cuts out early, it will impact the landing pad at a higher descent rate than planned, potentially damaging or destroying the rocket and/or pad.

意味（2）

(astronautics) An instance of such a landing.

A suicide burn is a more efficient method of landing than slowly decelerating over the length of a long descent, as a smaller proportion of the engine's thrust is spent fighting against gravity.

詳細

意味（3）

(astronautics) A rocket firing during such a landing.

suicide burns （ plural ）