Search results
Results from the WOW.Com Content Network
Bipropellant rocket engines of the Apollo Lunar Module reaction control system (RCS) Spacecraft propulsion is any method used to accelerate spacecraft and artificial satellites. In-space propulsion exclusively deals with propulsion systems used in the vacuum of space and should not be confused with space launch or atmospheric entry.
A space vehicle's flight is determined by application of Newton's second law of motion: =, where F is the vector sum of all forces exerted on the vehicle, m is its current mass, and a is the acceleration vector, the instantaneous rate of change of velocity (v), which in turn is the instantaneous rate of change of displacement.
In spaceflight, an orbital maneuver (otherwise known as a burn) is the use of propulsion systems to change the orbit of a spacecraft. For spacecraft far from Earth, an orbital maneuver is called a deep-space maneuver (DSM). [1] When a spacecraft is not conducting a maneuver, especially in a transfer orbit, it is said to be coasting.
The theory of orbit determination has subsequently been developed to the point where today it is applied in GPS receivers as well as the tracking and cataloguing of newly observed minor planets. Modern orbit determination and prediction are used to operate all types of satellites and space probes, as it is necessary to know their future ...
The 33 Raptor rocket engines affixed to the bottom of the Super Heavy rocket booster are seen firing as SpaceX launched its fifth flight test of Starship on October 13. - Spacex/UPI/Shutterstock
SpaceX’s Starship rocket system is on the launchpad once again, preparing for its second test flight after a fiery explosion ended its first attempt in April. The most powerful rocket ever built ...
Sub-orbital space flights, being at a much lower speed, do not generate anywhere near as much [further explanation needed] heat upon re-entry. Even if the orbiting objects are expendable, most [quantify] space authorities [example needed] are pushing toward controlled re-entries to minimize hazard to lives and property on the planet. [citation ...
The majority of space launch vehicles used today can only launch a payload into a very narrow range of orbits. The angle relative to the equator and maximum altitude of these orbits are constrained by the rocket and launch site used. Given this limitation, most payloads are first launched into a transfer orbit, where an additional thrust ...