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61 spezifischer Treibstoffverbrauch
mspecific fuel consumptionDeutsch-Englisches Wörterbuch > spezifischer Treibstoffverbrauch
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62 кг
удельный расход топлива на кг тяги в часthrust specific fuel consumption -
63 час
время налета в часахhour's flying timeкарта замера при определенных часах наработкиtime historyлетный час1. airborne hour2. flight hour налет часовtime in the airнаработка в часах1. endurance hours2. running hours срок службы в часах налетаflying lifeудельный расход топлива на кг тяги в часthrust specific fuel consumption -
64 часы
авиационные часыaviation clockвремя налета в часахhour's flying timeкарта замера при определенных часах наработкиtime historyкарта часов поясовtime-zone mapлетный час1. flight hour2. airborne hour налет часовtime in the airнаработка в часах1. endurance hours2. running hours срок службы в часах налетаflying lifeудельный расход топлива на кг тяги в часthrust specific fuel consumptionчасы налетаoperational hours -
65 удельный расход условного топлива
удельный расход условного топлива
—
[Я.Н.Лугинский, М.С.Фези-Жилинская, Ю.С.Кабиров. Англо-русский словарь по электротехнике и электроэнергетике, Москва, 1999 г.]Тематики
- электротехника, основные понятия
EN
Русско-английский словарь нормативно-технической терминологии > удельный расход условного топлива
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66 carburante
m.fuel.* * *1 fuel* * *SM fuel* * *masculino fuel* * *= fuel, petrol.Ex. The librarians have instituted a series of campaigns, including displays and leaflets on specific issues, eg energy conservation and fuel debt, rent and rates rebates, and school grants.Ex. Many rural bus routes have now been threatened by rising petrol costs and the withdrawal of transport subsidies.----* base de datos de carburantes = TULSA.* carburante obtenido de fósiles = fossil fuel.* consumo de carburante = fuel consumption, petrol consumption.* filtro del carburante = fuel filter.* inyección de carburante = fuel injection.* inyector de carburante = fuel injector.* precio del carburante = fuel price, fuel pump price.* * *masculino fuel* * *= fuel, petrol.Ex: The librarians have instituted a series of campaigns, including displays and leaflets on specific issues, eg energy conservation and fuel debt, rent and rates rebates, and school grants.
Ex: Many rural bus routes have now been threatened by rising petrol costs and the withdrawal of transport subsidies.* base de datos de carburantes = TULSA.* carburante obtenido de fósiles = fossil fuel.* consumo de carburante = fuel consumption, petrol consumption.* filtro del carburante = fuel filter.* inyección de carburante = fuel injection.* inyector de carburante = fuel injector.* precio del carburante = fuel price, fuel pump price.* * *fuel* * *
carburante sustantivo masculino
fuel
carburante sustantivo masculino fuel
' carburante' also found in these entries:
Spanish:
combustible
English:
fuel
- fuel injection
* * *carburante nmfuel* * *m fuel -
67 combustible
adj.combustible.m.fuel.combustible fósil fossil fuelcombustible sólido solid fuel* * *► adjetivo1 combustible1 fuel* * *noun m.* * *1.ADJ combustible2.SM (=carburante) fuel* * *Iadjetivo combustibleIImasculino (Fís, Quím) combustible; (Transp) ( carburante) fuel* * *= fuel, combustible.Ex. The librarians have instituted a series of campaigns, including displays and leaflets on specific issues, eg energy conservation and fuel debt, rent and rates rebates, and school grants.Ex. Libraries still remain as 'windows on the world' and 'warehouses of explosives whose shelves are ranked with the most furious combustibles in the world -- the brains of men'.----* ahorro de combustible = fuel saving.* celda de combustible = fuel cell.* célula de combustible = fuel cell.* combustible biológico = biofuel.* combustible fósil = fossil fuel.* combustible sintético = synthetic fuel.* combustible sólido = solid fuel.* combustible /pila de combustible = fuel cell.* consumo de combustible = fuel consumption.* eficacia de consumo de combustible = fuel efficiency.* gas combustible = fuel gas.* inyección de combustible = fuel injection.* inyector de combustible = fuel injector.* precio del combustible = fuel price, fuel pump price.* * *Iadjetivo combustibleIImasculino (Fís, Quím) combustible; (Transp) ( carburante) fuel* * *= fuel, combustible.Ex: The librarians have instituted a series of campaigns, including displays and leaflets on specific issues, eg energy conservation and fuel debt, rent and rates rebates, and school grants.
Ex: Libraries still remain as 'windows on the world' and 'warehouses of explosives whose shelves are ranked with the most furious combustibles in the world -- the brains of men'.* ahorro de combustible = fuel saving.* celda de combustible = fuel cell.* célula de combustible = fuel cell.* combustible biológico = biofuel.* combustible fósil = fossil fuel.* combustible sintético = synthetic fuel.* combustible sólido = solid fuel.* combustible /pila de combustible = fuel cell.* consumo de combustible = fuel consumption.* eficacia de consumo de combustible = fuel efficiency.* gas combustible = fuel gas.* inyección de combustible = fuel injection.* inyector de combustible = fuel injector.* precio del combustible = fuel price, fuel pump price.* * *combustible2 ( Transp) (carburante) fuelcombustibles líquidos/sólidos liquid/solid fuelsCompuesto:fossil fuel* * *
combustible adjetivo
combustible
■ sustantivo masculino (Fís, Quím) combustible;
(Transp) ( carburante) fuel
combustible
I sustantivo masculino fuel
II adjetivo combustible
' combustible' also found in these entries:
Spanish:
deyección
- economizar
- inflamarse
- motor
- recargable
- repostar
- tragar
- cargar
- parafina
- petróleo
- ron
English:
burn up
- diesel
- fossil fuel
- fuel
- refuel
- smokeless
* * *♦ adjcombustible♦ nmfuelcombustible fósil fossil fuel;combustible líquido liquid fuel;combustible mineral mineral fuel;combustible nuclear nuclear fuel;combustible sólido solid fuel* * *I adj combustibleII m fuel* * *combustible adj: combustiblecombustible nm: fuel* * *combustible n fuel -
68 удельный расход условного топлива
1) General subject: specific fuel equivalent consumption (АД)2) Engineering: specific reference fuel consumption3) Power engineering: specific reference fuel consumerУниверсальный русско-английский словарь > удельный расход условного топлива
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69 разход
expense, expenditure, outlay, outgo(на сили, пари и пр.) drain(консумация-на енергия и пр.) consumptionразход на гориво fuel consumptionразходи outlayизвънредни разходи overhead expenses/expenditureнепредвидени разходи contin-' genciesканцеларски разходи office outlay/expenditureпари за дребни разходи (на жена) pin-moneyтова е голям разход за мене it is a great drain on my purse* * *ра̀зход,м., -и, (два) ра̀зхода expense, expenditure, outlay, outgo, cost; (на сили, пари и пр.) drain; (на вода от язовир) outflow; ( консумация на енергия и пр.) consumption; държавни \разходи state expenditure; експлоатационни \разходи operating costs; ефективност на \разходите cost-effectiveness; извънредни \разходи overhead expenses/expenditure; направени (невъзстановими) \разходи икон. committed costs; непредвидени \разходи contingencies; оперативни \разходи running costs; относителен \разход specific consumption; оценка на \разходите costing; пари за дребни \разходи petty cash, (на жена) pin money; първоначални \разходи preliminary/formation expenses; \разход за единица продукция unit cost; \разходи outlay; \разходи, дължащи се на престой downtime costs; \разходи за техническо обслужване maintenance costs; \разходи за труд labour costs; \разходи от постъпления revenue expenditures; това е голям \разход за мене it is a great drain on my purse.* * *expenditure: Limit your разходs to what is essential. - Ограничи разходите си до най-необходимото.; expense: go to an разход - влизам в разход, put s.o to an разход - вкарвам в разход, traveling разходs - пътни разходи; cost: He furnishes his flat without regard to разход. - Той обзавежда апартамента си без да го интересуват разходите.; consumption: electricity разход - разход на електричество; outgo* * *1. (консумация- на енергия и пр.) consumption 2. (на сили, пари и пр.) drain 3. expense, expenditure, outlay, outgo 4. РАЗХОД на гориво fuel consumption 5. РАЗХОДи outlay 6. държавни РАЗХОДи state expenditure 7. извънредни РАЗХОДи overhead expenses/expenditure 8. канцеларски РАЗХОДи office outlay/expenditure 9. непредвидени РАЗХОДи contin- ' gencies 10. пари за дребни РАЗХОДи (на жена) pin-money 11. приход и РАЗХОД income and expenditure 12. това е голям РАЗХОД за мене it is a great drain on my purse -
70 Ricardo, Sir Harry Ralph
[br]b. 26 January 1885 London, Englandd. 18 May 1974 Graffham, Sussex, England[br]English mechanical engineer; researcher, designer and developer of internal combustion engines.[br]Harry Ricardo was the eldest child and only son of Halsey Ricardo (architect) and Catherine Rendel (daughter of Alexander Rendel, senior partner in the firm of consulting civil engineers that later became Rendel, Palmer and Tritton). He was educated at Rugby School and at Cambridge. While still at school, he designed and made a steam engine to drive his bicycle, and by the time he went up to Cambridge in 1903 he was a skilled craftsman. At Cambridge, he made a motor cycle powered by a petrol engine of his own design, and with this he won a fuel-consumption competition by covering almost 40 miles (64 km) on a quart (1.14 1) of petrol. This brought him to the attention of Professor Bertram Hopkinson, who invited him to help with research on turbulence and pre-ignition in internal combustion engines. After leaving Cambridge in 1907, he joined his grandfather's firm and became head of the design department for mechanical equipment used in civil engineering. In 1916 he was asked to help with the problem of loading tanks on to railway trucks. He was then given the task of designing and organizing the manufacture of engines for tanks, and the success of this enterprise encouraged him to set up his own establishment at Shoreham, devoted to research on, and design and development of, internal combustion engines.Leading on from the work with Hopkinson were his discoveries on the suppression of detonation in spark-ignition engines. He noted that the current paraffinic fuels were more prone to detonation than the aromatics, which were being discarded as they did not comply with the existing specifications because of their high specific gravity. He introduced the concepts of "highest useful compression ratio" (HUCR) and "toluene number" for fuel samples burned in a special variable compression-ratio engine. The toluene number was the proportion of toluene in heptane that gave the same HUCR as the fuel sample. Later, toluene was superseded by iso-octane to give the now familiar octane rating. He went on to improve the combustion in side-valve engines by increasing turbulence, shortening the flame path and minimizing the clearance between piston and head by concentrating the combustion space over the valves. By these means, the compression ratio could be increased to that used by overhead-valve engines before detonation intervened. The very hot poppet valve restricted the advancement of all internal combustion engines, so he turned his attention to eliminating it by use of the single sleeve-valve, this being developed with support from the Air Ministry. By the end of the Second World War some 130,000 such aero-engines had been built by Bristol, Napier and Rolls-Royce before the piston aero-engine was superseded by the gas turbine of Whittle. He even contributed to the success of the latter by developing a fuel control system for it.Concurrent with this was work on the diesel engine. He designed and developed the engine that halved the fuel consumption of London buses. He invented and perfected the "Comet" series of combustion chambers for diesel engines, and the Company was consulted by the vast majority of international internal combustion engine manufacturers. He published and lectured widely and fully deserved his many honours; he was elected FRS in 1929, was President of the Institution of Mechanical Engineers in 1944–5 and was knighted in 1948. This shy and modest, though very determined man was highly regarded by all who came into contact with him. It was said that research into internal combustion engines, his family and boats constituted all that he would wish from life.[br]Principal Honours and DistinctionsKnighted 1948. FRS 1929. President, Institution of Mechanical Engineers 1944–5.Bibliography1968, Memo \& Machines. The Pattern of My Life, London: Constable.Further ReadingSir William Hawthorne, 1976, "Harry Ralph Ricardo", Biographical Memoirs of Fellows of the Royal Society 22.JBBiographical history of technology > Ricardo, Sir Harry Ralph
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71 теоретический расход
удельный расход, удельное потребление — specific consumption
Русско-английский новый политехнический словарь > теоретический расход
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72 spezifischer Impuls
m < aerospace> (Schub je Gewichtsdurchsatz) ■ specific impulse; thrust per rate of fuel consumption -
73 стимулировать
Стимулировать - to stimulate, to provide the impetus for, to give impetus to, to put an incentive forThis finding, initially unexpected, provided the impetus for the spanwise exploration reported in Table.The promise of higher turbine inlet temperature has given impetus to work on application of silicon based ceramics to the Gemini radial gas turbine engine.The probability of the package also puts incentives for increase of specific power output and improved fuel consumption.Русско-английский научно-технический словарь переводчика > стимулировать
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74 energía
f.1 energy, activeness, pep, vitality.2 energy, capacity to produce work, power.* * *1 energy, power2 figurado vigour (US vigor)\energía cinética kinetic energyenergía eléctrica electric powerenergía hidráulica water powerenergía nuclear nuclear powerenergía vital figurado vitality* * *noun f.* * *SF1) (=fuerza) energy, drive2) (Téc) power, energyenergía eléctrica — electric power, electricity
* * *1) (Fís) energy2)a) (vigor, empuje) energyb) ( firmeza) firmnesstienes que tratarlo con más energía — you must be firmer o stricter with him
* * *= drive, energy, fuel, power, liveliness, verve, pizzazz, oomph, pep.Ex. Hierarchical bibliometry would act as a positive drive to support the authorship requirements now stipulated by some international editorial committees.Ex. Ranganathan proposed five basic types of facets which may occur in many subject fields: personality, matter, energy, space, time.Ex. The librarians have instituted a series of campaigns, including displays and leaflets on specific issues, eg energy conservation and fuel debt, rent and rates rebates, and school grants.Ex. She added that she felt sorry for the assistant because he had so little power.Ex. To infuse into that basic form an element of linguistic liveliness and wit, which marks out the best adult reviewers, is to ask far more than most children can hope to achieve.Ex. Much of the verve and shimmer of her lyrics can be connected to the near-fatal liver abscess she suffered in 1996.Ex. I wanted to show them an application which not only was database functional, but which itself had some pizzazz as a website.Ex. Many recent commentators speak as if they think that computers can painlessly deliver the oomph we need in curriculum.Ex. Not a lot of pep however, so this might be the day to curl up with a really challenging book or game.----* ahorrar energía = save + energy.* ahorro de energía = energy conservation, energy saving, savings in energy.* compañía de suministro de energía = energy company.* Comunidad Europea de la Energía Atómica (Euratom o EAEC) = European Atomic Energy Community (Euratom/EAEC).* con energía = powerfully.* con mucha energía = high energy.* consumir energía = consume + energy, take up + energy.* conversión de la energía = energy conversion.* dar energía = energise [energize, -USA].* de alta energía = high energy.* dedicar energía = expend + energy.* derrochar energía = waste + energy.* energía atómica = nuclear power.* energía atómmica = atomic energy.* energía cinética = kinetic energy.* energía del mar = ocean energy.* energía del petróleo = petroleum energy.* energía eléctrica = electric power, power, electrical power.* energía eólica = wind energy, wind power.* energía espiritual = spiritual energy.* energía geotérmica = geothermal energy.* energía hidroeléctrica = hydroelectric power.* energía humana = human energy.* energía negativa = bad vibes.* energía no renovable = non-renewable energy.* energía nuclear = nuclear energy, nuclear power.* energía positiva = vibrations, good vibes.* energía producto de la fisión = fission energy.* energía renovable = renewable energy.* energía solar = solar energy.* energía térmica = thermal power.* energía termosolar = thermal solar power.* energía vital = life force.* faceta de Energía = Energy facet.* física de altas energías = high energy physics.* fuente de energía = energy source, source of energy, power source.* fuente de energía(s) alternativa(s) = alternative energy source.* generador de energía eléctrica = power generator, power unit, electrical generator.* generador de energía solar = solar energy generator.* impulsado por energía eólica = wind-powered.* infundir energía = energise [energize, -USA].* liberar energía = blow off + steam, let off + steam.* lleno de energía = energetic, feisty [feistier -comp., feistiest -sup.], full of beans.* modo de ahorro de energía = power save mode.* pletórico de energía = full of beans.* que consume mucha energía = energy-intensive, power-hungry.* que funciona con energía eólica = wind-powered.* rebosante de energía y lleno de entusiasmo = all bright-eyed and bushy-tailed.* rebosante de vida y energía = all bright-eyed and bushy-tailed.* recobrar energía = get + a second wind.* recobrar la energía = regain + Posesivo + strength.* recuperación de la energía = second wind.* recuperar la energía = regain + Posesivo + strength.* sin energía = lethargic.* transformación de la energía = energy conversion.* * *1) (Fís) energy2)a) (vigor, empuje) energyb) ( firmeza) firmnesstienes que tratarlo con más energía — you must be firmer o stricter with him
* * *= drive, energy, fuel, power, liveliness, verve, pizzazz, oomph, pep.Ex: Hierarchical bibliometry would act as a positive drive to support the authorship requirements now stipulated by some international editorial committees.
Ex: Ranganathan proposed five basic types of facets which may occur in many subject fields: personality, matter, energy, space, time.Ex: The librarians have instituted a series of campaigns, including displays and leaflets on specific issues, eg energy conservation and fuel debt, rent and rates rebates, and school grants.Ex: She added that she felt sorry for the assistant because he had so little power.Ex: To infuse into that basic form an element of linguistic liveliness and wit, which marks out the best adult reviewers, is to ask far more than most children can hope to achieve.Ex: Much of the verve and shimmer of her lyrics can be connected to the near-fatal liver abscess she suffered in 1996.Ex: I wanted to show them an application which not only was database functional, but which itself had some pizzazz as a website.Ex: Many recent commentators speak as if they think that computers can painlessly deliver the oomph we need in curriculum.Ex: Not a lot of pep however, so this might be the day to curl up with a really challenging book or game.* ahorrar energía = save + energy.* ahorro de energía = energy conservation, energy saving, savings in energy.* compañía de suministro de energía = energy company.* Comunidad Europea de la Energía Atómica (Euratom o EAEC) = European Atomic Energy Community (Euratom/EAEC).* con energía = powerfully.* con mucha energía = high energy.* consumir energía = consume + energy, take up + energy.* conversión de la energía = energy conversion.* dar energía = energise [energize, -USA].* de alta energía = high energy.* dedicar energía = expend + energy.* derrochar energía = waste + energy.* energía atómica = nuclear power.* energía atómmica = atomic energy.* energía cinética = kinetic energy.* energía del mar = ocean energy.* energía del petróleo = petroleum energy.* energía eléctrica = electric power, power, electrical power.* energía eólica = wind energy, wind power.* energía espiritual = spiritual energy.* energía geotérmica = geothermal energy.* energía hidroeléctrica = hydroelectric power.* energía humana = human energy.* energía negativa = bad vibes.* energía no renovable = non-renewable energy.* energía nuclear = nuclear energy, nuclear power.* energía positiva = vibrations, good vibes.* energía producto de la fisión = fission energy.* energía renovable = renewable energy.* energía solar = solar energy.* energía térmica = thermal power.* energía termosolar = thermal solar power.* energía vital = life force.* faceta de Energía = Energy facet.* física de altas energías = high energy physics.* fuente de energía = energy source, source of energy, power source.* fuente de energía(s) alternativa(s) = alternative energy source.* generador de energía eléctrica = power generator, power unit, electrical generator.* generador de energía solar = solar energy generator.* impulsado por energía eólica = wind-powered.* infundir energía = energise [energize, -USA].* liberar energía = blow off + steam, let off + steam.* lleno de energía = energetic, feisty [feistier -comp., feistiest -sup.], full of beans.* modo de ahorro de energía = power save mode.* pletórico de energía = full of beans.* que consume mucha energía = energy-intensive, power-hungry.* que funciona con energía eólica = wind-powered.* rebosante de energía y lleno de entusiasmo = all bright-eyed and bushy-tailed.* rebosante de vida y energía = all bright-eyed and bushy-tailed.* recobrar energía = get + a second wind.* recobrar la energía = regain + Posesivo + strength.* recuperación de la energía = second wind.* recuperar la energía = regain + Posesivo + strength.* sin energía = lethargic.* transformación de la energía = energy conversion.* * *A ( Fís) energyderroche de energía waste of energyconsumo de energía energy consumptionfuentes de energía sources of energyCompuestos:atomic powerkinetic energyelectricity, electric powerwind powerwater powernuclear power, nuclear energysolar power, solar energyB1 (vigor, empuje) energylo acometió con energía he undertook it with great vigor o with great energy o very energeticallyme siento cansada y sin energía(s) I feel tired and lacking in energyprotestar con energía to protest vigorously2 (firmeza) firmnesstienes que tratarlo con más energía you must be firmer o stricter with him* * *
energía sustantivo femenino
1 (Fís) energy;◊ energía nuclear/solar nuclear/solar power
2
está lleno de energía he's very energetic
energía sustantivo femenino
1 energy: nos enseñaron una central de energía solar, they showed us round a solar power station
energía eléctrica, electricity
energía nuclear, nuclear power
2 (de una persona) energy, vitality
' energía' also found in these entries:
Spanish:
central
- decaer
- eólica
- eólico
- EURATOM
- gastar
- hidráulica
- hidráulico
- savia
- solar
- absorber
- ahorrar
- brío
- consumir
- dirigir
- emplear
- fuerza
- ímpetu
- pérdida
- transportar
- vigor
English:
bean
- bounce
- burst
- drive
- energy
- go
- harness
- life
- nuclear energy
- power
- solar-powered
- sprightliness
- stamina
- bursting
- energetic
- nuclear
- pep
- wind
* * *energía nf1. [para máquina, sistema] power, energy;[para el cuerpo, organismo] energy;fuentes de energía sources of energy;el aporte necesario de energía para el organismo the body's energy needsenergías alternativas alternative energy sources;energía atómica nuclear power o energy;energía calórica heat energy;Fís energía cinética kinetic energy;energía eléctrica electric energy;energía eólica wind energy o power;energía geotérmica geothermal energy o power;energía hidráulica water power;energía hidroeléctrica hydroelectric power;energía limpia clean energy;energía mareomotriz tidal o wave energy;energía nuclear nuclear power o energy;Fís energía potencial potential energy;energía radiante radiant energy;energías renovables renewable forms of energy;energía solar solar energy o power;energía térmica thermal energy o power2. [vigor físico] energy;su trabajo le resta energías his work doesn't leave him much energy;hay que empujar con energía you have to push hard3. [actitud] vigour, forcefulness;defendió su postura con energía she energetically defended her position;respondió con energía he responded emphatically* * *f energy;abrir la puerta con energía fling open the door* * *energía nf: energy* * *energía n1. (fuerza) energy / powerenergía solar solar energy / solar power2. (capacidad) energy
См. также в других словарях:
Specific fuel consumption (thrust) — Specific fuel consumption, often shortened to SFC, or TSFC is an engineering term that is used to describe the fuel efficiency of an engine design with respect to thrust output. It allows the efficiency of different sized engines to be directly… … Wikipedia
specific fuel consumption — The quantity of fuel consumed (by weight) to produce one unit of power in one unit of time. In piston engines, the SFC is equal to the mass ratio of fuel/shaft horsepower. In gas turbine engines, the SFC is equal to the mass ratio of fuel/thrust … Aviation dictionary
specific fuel consumption — noun The ratio of the mass of fuel used to the output power of an engine (used especially of aircraft engines) … Wiktionary
specific fuel consumption — (SFC) The amount of fuel consumed by an engine for each unit of energy produced; measured in kilograms per megajoule or kilograms per kilowatt hour or pounds per bhp hour … Dictionary of automotive terms
Brake specific fuel consumption — (BSFC) is a measure of an engine s efficiency. It is the rate of fuel consumption divided by the power produced. BSFC is specific for shaft engines such as reciprocating engine. The BSFC Calculation (in metric units) To calculate BSFC, use the… … Wikipedia
fuel consumption — The amount of fuel used, expressed in miles per gallon in Britain and the USA, whereas the international measure is litres per 100 kilometres. The US term is fuel mileage. Also see average fuel consuption specific fuel consumption … Dictionary of automotive terms
brake-specific fuel consumption — The weight of fuel burned per hour to produce a given amount of brake horsepower in a reciprocating engine. Normally, BSFC is expressed in pounds of fuel burned per hour for each brake horsepower the engine develops … Aviation dictionary
thrust-specific fuel consumption — A measure of the fuel efficiency of a turbojet or turbofan engine. It is the mass of fuel burned per hour for each unit of thrust produced … Aviation dictionary
Fuel economy-maximizing behaviors — (also known as green driving) describe techniques that drivers can use to optimize their automobile fuel economy. The energy in fuel consumed in driving is lost in many ways, including engine inefficiency, aerodynamic drag, rolling friction, and… … Wikipedia
Fuel efficiency — is a form of thermal efficiency, meaning the efficiency of a process that converts chemical potential energy contained in a carrier fuel into kinetic energy or work. Overall fuel efficiency may vary per device, which in turn may vary per… … Wikipedia
Specific impulse — (usually abbreviated I sp) is a way to describe the efficiency of rocket and jet engines. It represents the impulse (change in momentum) per unit of propellant. The higher the specific impulse, the less propellant is needed to gain a given amount … Wikipedia