> as lemmas

1962 Rev. Space Res. (Nat. Acad. Sci. Publ. 1079) x. 9 This relaxation of tolerance..will be justified by the increased reliability of a mission which will not require a final retromaneuver.

1970 Bull. Atomic Scientists Apr. 29/1 It undocks, deorbits with a retro maneuver, enters the atmosphere..and jets back to a landing strip.

2001 J. T. Richelson Wizards of Langley iii. 85 The spacecraft's engines had been fired to send it cruising toward the moon. On February 3, it was oriented for retromaneuver.