Hohmann transfer

English + orbit Etymology Named after Walter Hohmann, the German engineer who described it. Noun en rocketry An elliptical orbit used to transfer a spacecraft between two circular orbits of different altitudes in the same plane, with the periapsis of the orbit being tangent to the smaller circular orbit and its apoapsis being tangent to the larger circular orbit. en rocketry The process of using such an orbit to transfer between two other orbits. Coordinate terms en bi-elliptic transfer en Orbits en eponyms