Search results
Results from the WOW.Com Content Network
A reactionless drive is a hypothetical device producing motion without the exhaust of a propellant.A propellantless drive is not necessarily reactionless when it constitutes an open system interacting with external fields; but a reactionless drive is a particular case of a propellantless drive that is a closed system, presumably in contradiction with the law of conservation of momentum.
The first design of a resonant cavity thruster claiming to be a reactionless drive was by Roger Shawyer in 2001. He called his conical design an "EmDrive", and claimed that it produced thrust in the direction of the base of the cone. Guido Fetta later built a "Cannae Drive", based in part on Shawyer's concept, [18] [17] using a pillbox-shaped ...
In the general relativistic field propulsion system space is considered to be an elastic field similar to rubber which means that space itself can be treated as an infinite elastic body. If the space-time curves, a normal inwards surface stress is generated which serves as a pressure field. By creating a great number of those curve surfaces ...
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 vernier thruster or gimbaled engine are particular cases used on launch vehicles where a secondary rocket engine or other high thrust device is used to control the attitude of the rocket, while the primary thrust engine (generally also a rocket engine) is fixed to the rocket and supplies the principal amount of thrust.
Pitch drive [34] Plasma bubble [42] Quantum telescope; Quantum vacuum thruster; Quasite [43] Ringworld; Reactionless drive; RF resonant cavity thruster; Rocket sled launch; Rotating wheel space station; Self-replicating spacecraft; Skyhook; Solar thermal rocket; Space coach [44] Space dock; Space elevator; Space fountain; Space gun; Space ...
SHERPA (space tug) Single-stage-to-orbit; Skyhook (structure) Solar electric propulsion; Solar sail; Space elevator; Space gun; Space tether; Space tug; Spacecraft electric propulsion; Specific impulse; SPT-100; SPT-140; Staged combustion cycle; Star Thrust Experiment; System-specific impulse
The Helical engine is a proposed spacecraft propulsion drive that, like other reactionless drives, would violate the laws of physics. [1] [2] [3]The concept was proposed by David M. Burns, formerly a NASA engineer at the Marshall Space Flight Center in Alabama, in a non-peer-reviewed report published on a NASA server in 2019 describing it as "A new concept for in-space propulsion is proposed ...