411 REFERENCE · Wiktionary
Oberth effect
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Etymology
Named after the physicist Hermann Oberth, who described the concept in 1927.
Noun
en space flight The concept that the most efficient place for spacecraft to change velocity is at the periapsis (the lowest point of an orbit).
en Orbits Space flight
en eponyms