• 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...
    35 KB (5,007 words) - 22:09, 8 June 2025
  • 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
  • Thumbnail for Variable Specific Impulse Magnetoplasma Rocket
    The Variable Specific Impulse Magnetoplasma Rocket (VASIMR) is an electrothermal thruster under development for possible use in spacecraft propulsion....
    30 KB (3,174 words) - 15:32, 24 May 2025
  • Thumbnail for Impulse response
    impulse response, or impulse response function (IRF), of a dynamic system is its output when presented with a brief input signal, called an impulse (δ(t))...
    10 KB (1,211 words) - 21:36, 25 May 2025
  • 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 (477 words) - 11:46, 20 June 2025
  • Thumbnail for Project Orion (nuclear propulsion)
    both at once (see spacecraft propulsion for more speculative systems). Specific impulse (Isp) measures how much thrust can be derived from a given mass...
    63 KB (7,298 words) - 06:59, 2 June 2025
  • 2005. Retrieved September 21, 2016. Ross, F.W. (1960). Propulsive System Specific Impulse. General Atomics GAMD-1293 8 Feb. 1960. San Diego, California,...
    27 KB (2,510 words) - 06:00, 11 April 2025
  • Thumbnail for Impulse (physics)
    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 (869 words) - 02:48, 12 April 2025
  • Infinite impulse response (IIR) is a property applying to many linear time-invariant systems that are distinguished by having an impulse response h (...
    15 KB (2,846 words) - 16:28, 18 February 2025
  • with propellant. It uses Saiph bipropellant thrusters which have a specific impulse (Isp) of 290 s. It can impart a delta-v of from 500 m/s with 300 kg...
    15 KB (1,285 words) - 18:22, 1 June 2025
  • Thumbnail for Liquid-propellant rocket
    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 (6,608 words) - 03:24, 25 May 2025
  • propulsion system's specific impulse and thrust/weight ratio relative to conventional rocket propulsion. For example, hydrogen can provide a specific impulse of...
    26 KB (3,265 words) - 09:34, 25 June 2025
  • Thumbnail for Electricity
    India or China. Environmental concerns with electricity generation, in specific the contribution of fossil fuel burning to climate change, have led to...
    84 KB (9,396 words) - 03:05, 28 June 2025
  • domain, just as the impulse response characterizes systems in the time domain. In linear systems (or as an approximation to a real system neglecting second...
    11 KB (1,282 words) - 21:39, 7 May 2025
  • in meters^2(m^2). Specific impulse is how efficiently the fuel of the MET is used to create thrust. The formula for specific impulse is given as: I s p...
    9 KB (1,287 words) - 22:45, 24 May 2025
  • a high specific impulse, and a high specific impulse per unit volume of propellant should be considered. Overview of the specific impulses of propellants...
    12 KB (1,521 words) - 21:17, 12 November 2024
  • more common). Typically, this system works as follows: During the initial high-impulse orbit-raising maneuvers, the system operates in a bipropellant fashion...
    1 KB (131 words) - 18:33, 18 May 2024
  • Thumbnail for Scramjet
    {\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...
    71 KB (8,281 words) - 00:49, 24 June 2025
  • Thumbnail for Jet propulsion
    gravity (g0) converts specific impulse from the mass basis to the weight basis. A propulsion system with a higher specific impulse uses the mass of the...
    15 KB (1,722 words) - 02:18, 28 March 2025
  • Thumbnail for Gridded ion thruster
    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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  • Thumbnail for Transient response
    the equilibrium of the system. The impulse response and step response are transient responses to a specific input (an impulse and a step, respectively)...
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  • In signal processing, a finite impulse response (FIR) filter is a filter whose impulse response (or response to any finite length input) is of finite...
    18 KB (3,089 words) - 12:26, 18 August 2024
  • propellant temperatures and therefore higher specific impulses, approaching 1200 seconds. Even the lower specific impulse represents a significant increase over...
    13 KB (1,547 words) - 02:03, 26 May 2025
  • Thumbnail for Plasma propulsion engine
    interplanetary missions due to their high specific impulse. Many space agencies developed plasma propulsion systems, including the European Space Agency,...
    13 KB (1,427 words) - 01:36, 14 June 2025
  • rockets) are classified by total impulse into a set of letter-designated ranges, from 1⁄8A up to O. The total impulse is the integral of the thrust over...
    17 KB (1,337 words) - 00:21, 27 June 2025
  • thrust and impulse density, allowing for smaller, lighter tanks. In the second, it burns only hydrogen, allowing for greater specific impulse. The RD-701...
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  • or one propellants, respectively. Tripropellant systems can be designed to have high specific impulse and have been investigated for single-stage-to-orbit...
    8 KB (1,059 words) - 23:11, 24 May 2025
  • Thumbnail for Nuclear pulse propulsion
    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 (2,925 words) - 20:25, 25 May 2025
  • Thumbnail for Variable cycle engine
    airspeed. In effect the engine can operate at any point along the specific impulse (Isp) curve - high Isp at low speed or low Isp at high speed. It is...
    11 KB (1,414 words) - 23:54, 15 December 2024
  • Thumbnail for SpaceX Raptor
    Starship system. SpaceX [@SpaceX] (3 August 2024). "Performance stats of previous versions: Raptor 1 (sea level variant) Thrust: 185tf Specific impulse: 350s...
    76 KB (6,618 words) - 13:54, 25 May 2025