Specific impulse (usually abbreviated Isp) is a measure of how efficiently a reaction mass engine, such as a rocket using propellant or a jet engine using... 27 KB (3,833 words) - 17:54, 21 April 2024 |
In classical mechanics, impulse (symbolized by J or Imp) is the change in momentum of an object. If the initial momentum of an object is p1, and a subsequent... 7 KB (848 words) - 21:28, 6 March 2024 |
The Variable Specific Impulse Magnetoplasma Rocket (VASIMR) is an electrothermal thruster under development for possible use in spacecraft propulsion.... 30 KB (3,202 words) - 10:34, 12 December 2023 |
System-specific Impulse, Issp is a measure that describes performance of jet propulsion systems. A reference number is introduced, which defines the total... 3 KB (347 words) - 04:41, 3 March 2024 |
Rocket engine (section Specific impulse) thrust, but are the least propellant-efficient (they have the lowest specific impulse). The ideal exhaust is hydrogen, the lightest of all elements, but... 101 KB (11,741 words) - 14:03, 13 April 2024 |
Rocket engine nozzle (section Specific impulse) been proposed for some types of propulsion (for example, Variable Specific Impulse Magnetoplasma Rocket, VASIMR), in which the flow of plasma or ions... 24 KB (3,065 words) - 03:55, 20 November 2023 |
Jet propulsion (section Specific impulse) than continuous, at least when the Reynolds number is greater than 6. Specific impulse (usually abbreviated Isp) is a measure of how effectively a rocket... 13 KB (1,489 words) - 21:33, 7 October 2023 |
Rocket (section Specific impulse) second. An equivalent measure, the net impulse per weight unit of propellant expelled, is called specific Impulse, I s p {\displaystyle I_{sp}} , and this... 107 KB (11,407 words) - 12:54, 12 May 2024 |
Gridded ion thruster (section Specific impulse) electrostatic ion thruster called HiPEP which will have higher efficiency, specific impulse, and a longer lifetime than NSTAR.[citation needed] In 2006, Aerojet... 13 KB (1,537 words) - 04:32, 12 May 2024 |
the amount of specific power required compared to chemical rockets. Ion thrusters are therefore able to achieve high specific impulses. The drawback of... 85 KB (8,749 words) - 12:40, 8 May 2024 |
Cold gas thruster (section Specific Impulse) a high specific impulse, and a high specific impulse per unit volume of propellant should be considered. Overview of the specific impulses of propellants... 13 KB (1,584 words) - 22:33, 28 April 2024 |
with propellant. It uses Saiph bipropellant thrusters which have a specific impulse (Isp) of 290 s. It can impart a delta-v of up to 500 m/s.[citation... 13 KB (1,125 words) - 22:04, 12 April 2024 |
Space Shuttle main engine. With refinements a theoretical maximum specific impulse of 100,000 s (980 km/s) (1 MN·s/kg) might be possible. Thrusts were... 27 KB (2,922 words) - 14:48, 27 April 2024 |
respect to time Impulse noise (disambiguation) Specific impulse, the change in momentum per unit mass of propellant of a propulsion system Impulse function,... 4 KB (478 words) - 23:05, 24 March 2024 |
denser, increasing propellant mass as well as engine performance. Specific impulse is increased, and the risk of cavitation at inputs to the turbopumps... 72 KB (6,129 words) - 22:34, 13 May 2024 |
the propellants by their exhaust velocity relative to the rocket (specific impulse). A rocket can be thought of as being accelerated by the pressure of... 29 KB (3,879 words) - 08:48, 12 January 2024 |
have reasonably high density and their combustion products have high specific impulse (Isp). This allows the volume of the propellant tanks to be relatively... 53 KB (6,621 words) - 19:07, 6 May 2024 |
sea level and 420 kN (95,000 lbf) in vacuum, and performing with a specific impulse of 261 s (2.56 km/s) at sea level and 303 s (2.97 km/s) in vacuum.... 51 KB (5,147 words) - 06:50, 13 April 2024 |
by using nitrocellulose, improving the overall specific impulse. The aluminium improves specific impulse as well as combustion stability. High performing... 44 KB (5,410 words) - 20:13, 3 April 2024 |
of thrust (newtons, or N), hence thrust-specific. This figure is inversely proportional to specific impulse, which is the amount of thrust produced per... 13 KB (1,051 words) - 07:03, 5 March 2024 |
a higher specific impulse than the gas-generator cycle Rocketdyne F-1 despite the use of UDMH/N2O4 propellants with lower potential impulse. The F-1 engine... 73 KB (7,813 words) - 12:09, 9 May 2024 |
liftoff Thrust 991 kN (223 klbf) in vacuum Specific impulse 245 seconds (2.40 km/s) at liftoff Specific impulse 310 seconds (3.0 km/s) in vacuum Chamber... 26 KB (2,958 words) - 21:47, 10 May 2024 |
were a significantly lower thrust-to-weight ratio and a 10% lower specific impulse compared to the SSME. The benefit of this simplicity is the RS-68's... 16 KB (1,435 words) - 20:41, 7 May 2024 |
sea level liftoff): 1,553,200 lbf (6.909 MN) Burn time: 159 seconds Specific impulse: 264.72 s (2.5960 km/s)[citation needed] Mixture ratio: 2.2674 S-IC... 36 KB (3,777 words) - 19:52, 5 May 2024 |
Tsiolkovsky rocket equation (section Impulse-based) effective exhaust velocity; I sp {\displaystyle I_{\text{sp}}} is the specific impulse in dimension of time; g 0 {\displaystyle g_{0}} is standard gravity;... 25 KB (4,342 words) - 19:05, 8 April 2024 |