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...
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The Variable Specific Impulse Magnetoplasma Rocket (VASIMR) is an electrothermal thruster under development for possible use in spacecraft propulsion....
30 KB (3,206 words) - 10:43, 14 July 2024
System-specific Impulse, Issp is a measure that describes performance of jet propulsion systems. A reference number is introduced, which defines the total...
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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...
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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...
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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...
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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...
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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...
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denser, increasing propellant mass as well as engine performance. Specific impulse is increased, and the risk of cavitation at inputs to the turbopumps...
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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...
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respect to time Impulse noise (disambiguation) Specific impulse, the change in momentum per unit mass of propellant of a propulsion system Impulse function,...
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the amount of specific power required compared to chemical rockets. Ion thrusters are therefore able to achieve high specific impulses. The drawback of...
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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...
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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....
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stated that it had a thrust of 1 MN (220,000 lbf) and 320 seconds of specific impulse. The same day, the Neutron page on Rocket Lab's website was updated...
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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...
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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...
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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...
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000 lbf) (Sea level) Total thrust 7,680 kN (1,730,000 lbf) (Sea level) Specific impulse 310.7 s (3.047 km/s) (Sea level) Burn time 214 seconds Propellant RP-1/LOX...
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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 (3,883 words) - 23:36, 27 June 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...
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have reasonably high density and their combustion products have high specific impulse (Isp). This allows the volume of the propellant tanks to be relatively...
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Maximum thrust 760 kN (170,000 lbf) Total thrust 3,040 kN (680,000 lbf) Specific impulse 262 s (2.57 km/s) Burn time 154 seconds Propellant N2O4 / UDMH First...
26 KB (1,919 words) - 14:35, 26 June 2024
{\displaystyle I_{\text{sp}}} is the specific impulse h PR {\displaystyle h_{\text{PR}}} is fuel heat of reaction Specific impulse is often used as the unit of...
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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;...
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by using nitrocellulose, improving the overall specific impulse. The aluminium improves specific impulse as well as combustion stability. High performing...
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that NERVA had the designed specific impulse of 811 seconds (7.95 km/s); solid-propellant rockets have a maximum impulse of around 300 seconds (2.9 km/s)...
88 KB (10,890 words) - 20:07, 12 June 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...
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ions in the plume. The Hall-effect thruster is classed as a moderate specific impulse (1,600 s) space propulsion technology and has benefited from considerable...
39 KB (4,359 words) - 03:44, 31 July 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...
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