astrodynamical
Look at other dictionaries:
Sub-orbital spaceflight — A sub orbital spaceflight (or sub orbital flight) is a spaceflight in which the spacecraft reaches space, but its trajectory intersects the atmosphere or surface of the gravitating body from which it was launched, so that it does not complete one … Wikipedia
Delta-v (physics) — For the special astrodynamical meaning, see Delta v. In general physics, delta v is simply the change in velocity. The Greek letter delta is a standard mathematical symbol to represent change (and can be thought of as a fulcrum with a beginning… … Wikipedia
