SI

(redirected from specific impulse)
Also found in: Dictionary, Encyclopedia, Wikipedia.
Category filter:
AcronymDefinition
SISports Illustrated
SISlovenia (international code)
SISilicon
SISystems Integration
SISystème International d'Unités (international system of units based on the Meter, Kilogram, Second, Ampere, Kelvin, Candela, and Mole)
SISystem Information (Norton Utilities)
SISystem Information
SIStatutory Instrument (UK Legislation term)
SIService Information
SISchool of Information (university)
SISelf-Injury
SISquare Inch(es)
SISmithsonian Institution
SISupplemental Instruction
SISignal Integrity
SISpark Ignition
SIShift In
SISlightly Included (second lowest quality of diamond)
SISerious Injury
SIInternational System of Units (metric system; more commonly seen as ISU)
SISouth Island (New Zealand)
SIStaten Island
SISistema Informativo
SIStructural Integrity
SISystèmes d'Information
SIStandardization (Flight) Instructor
SISystem International
SISite Investigation
SISystem Integrator
SISuperimpose
SISensory Integration
SISexual Intercourse
SISystem Interface
SISports Interactive (game)
SIStill Image
SIShut-In
SISmall Intestine
SISeriously Ill
SISelf Inflicted
SIScientific Investigation
SISistema de Informação
SISystems Integrator
SISacroiliac
SISingapore Idol (Singapore TV show)
SIStudy Island (software)
SIStrategic Initiative (management)
SISelf-Insert (fiction)
SISoftware Item
SISimply Irresistible (song)
SISpeaker Independent
SISelf-Incompatibility (botany)
SIScience and Industry
SISacroiliac Joint
SIShadow Image
SISiena, Toscana (Italian province)
SISwine Influenza
SISite Inspection
SISystems Intelligence (psychological theory)
SISwap-In
SISoroptimist International
SISub Inspector
SISimple Interest
SISynergos Institute (San Diego, CA)
SISoftice (debugger)
SIService Index
SISwarm Intelligence
SISudden Impact (movie)
SISource Index
SISuicidal Ideation
SIScientific Instrument
SISensitive Item (algorithm)
SIStep-Index
SIService Indicator (SS7 SCCP)
SISituationist International (governing body of political dissidents circa 1968)
SISpecialty Item
SISPARC International, Inc.
SIService Integrator
SISemiconductor International
SIShared Interest (New York, NY)
SISide Information
SISpecial Instruction
SISchweizer Informatiker Gesellschaft (Zurich, Switzerland)
SIShrouded Isles (gaming, Dark Age of Camelot add-on)
SISilicon Image, Inc
SISpecific Impulse (measure of efficiency of rocket engines)
SISurface Impoundment
SISpecial Intelligence
SISpecial Inspection
SISimplified Issue (life insurance)
SISaturation Index
SISignal Interference
SIScience Instrument (Hubble Telescope)
SISoil Investigation
SISimilarity Index
SIStrategic Investor
SISpeech Impairment
SIShift-Invariant
SISalt Institute
SISolution Implementation
SISummons Issued
SISarcasm Intended
SISystematic Innovation
SISailing Instruction
SISecurity Inspector
SISolving International
SIStrange Interlude (Eugene O'Neill book)
SISensitivity Information
SISelf-Insertion (fan fiction)
SIShipping Instruction
SISiilinjärvi (Finnish)
SISexually Inappropriate
SISecondary Injection
SISolar Influences
SIScalable Infrastructure
SISkill Identifier (US Army)
SISucrase-Isomaltase Deficiency
SISettlement Instruction
SISurveillance and Intelligence
SISelf Isolation
SISafeguards Information
SISafe Intake
SIStandardization and Interoperability
SISpiritual Intervention (religious doctrine)
SISurveillance Index
SIStraight-In Approach
SISpray Injection
SISergeant Instructor
SISaint Ignatius College Preparatory (San Francisco, California)
SISmoothness Index
SISociety for India (Cornell University)
SISummary Investigation
SIScintillation Index
SISupporting Installation
SISamahang Ilokano (Filipino college organization)
SISolar Inertial
SISupplementary Insulation
SISponsor Identification
SISurveyor Intern
SISport Injected (Honda)
SISimple Interference
SISector Iridectomy (partial removal of the iris of the eye)
SISeptuagint Institute (Trinity Western University, Canada)
SISelective Interchange
SISemiconductor Ignition
SISafety/Site Inspection
SIShadow Instruction (computer instruction set)
SISharma Industries
SISomatosensory Receiving Area (in parietal lobe of cortex)
SISpokane International Railroad Company
SISignaling Intelligence
SINormalized Subthreshold Swing
SISippy International
SISlave Illuminator
SISystems Industries, Incorporated
SISocietatis Iesu, Latin for Society of Jesus, Jesuits (religious order)
SISecretaría Indigenista (Spanish: Indigenous Secertariat)
Copyright 1988-2018 AcronymFinder.com, All rights reserved.
References in periodicals archive ?
Through a boost of slightly more than 3 percent in mean specific impulse on the first stage with an aerospike, without accounting for any weight savings by using the DEAN engine on the upper stage(s), current AFIT modeling indicates the possibility of realizing a 6 percent gain in maximum payload to GEO.
With this configuration of electromagnetic engine using the 2.45 GHz RF waves and 2 kW of electricity, energy balance calculations determine velocities up to 50,000 meters per second or 5,000 seconds of specific impulse. Thrust is about 70 mN.
In terms of vacuum specific impulse ([Isp.sub.vac]) there is little difference between the performance of nitric acid and nitrous oxide.
But, according to a report in New Scientist, a new engine, called VASIMR (Variable Specific Impulse Magnetoplasma Rocket), will have much more "oomph" than previous ones.
To explore the outer planets in a reasonable time, engines must generate either high exhaust velocity or high specific impulse. Specific impulse, abbreviated as [I.sub.sp], is a measure in seconds of propulsion system efficiency in converting fuel energy into momentum.
A GDM engine, Emrich said, would have a specific impulse of around 100,000 seconds.
Increasing the energy efficiency of propulsion is an important task of designing solid rocket motors (SRM), one of the component parts of which is the creation of a propellant with the high specific impulse [1].
Also, the RL10B-2 is a cryogenic upper-stage engine that provides 465 seconds of specific impulse and 24,750 pounds of thrust.
The kerosene-liquid oxygen first stage propellant generated 265 seconds of specific impulse. Specific impulse is the thrust force delivered per mass flow rate of propellant.
Engineers compare propulsion system performance with a useful parameter called specific impulse, a term defined as the ratio of rocket thrust to the mass flow rate of propellant.
Full browser ?