…If the entry angle is small, the deceleration by the atmosphere is insufficient and the vehicle will exit the atmosphere again, while if the entry angle is large, the deceleration and heating will exceed the allowable values. The area inside the upper and lower limits is called the entry corridor, and the width of the corridor is given as the difference in altitude between the hypothetical perigee at which the orbit at the upper and lower limits is not decelerated by the atmosphere (Figure). In particular, if lift can be utilized, the lift can be made positive or negative at the upper and lower ends of the entry corridor to widen the width. … *Some of the terminology that refers to "entry corridor" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…突入角が小さいと大気による減速が不十分で,再び大気圏外へ出てしまい,逆に大きいと減速度や加熱量が許容値を超える。この上下限界の内側は,突入回廊entry corridorと呼ばれており,回廊幅は,上下限界の軌道が大気による減速を受けないとした仮想的な近地点を考え,その高度差として与えられる(図)。とくに揚力が利用できる場合には,突入回廊の上下端で揚力を正負に操作し,幅を広げることができる。… ※「entry corridor」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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