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MONOERGOL [4 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2015-02-02

English

Subject field(s)
  • Spacecraft
DEF

Any elongated device or craft (as ... a spacecraft) in which a rocket engine is the means of propulsion.

PHR

Monopropellant rocket.

PHR

Moon rocket, lunar rocket.

French

Domaine(s)
  • Engins spatiaux
CONT

Une fusée est un moyen de transport, propulsé par un moteur à réaction n’utilisant pas l’oxygène de l’air (on parle de propulsion anaérobie).

OBS

«Fusée» est souvent employé comme un terme générique qui tend à être remplacé par des noms plus précis selon le domaine d’application. On parle de fusée pour le lancement de feux d’artifice, de lanceur pour les vaisseaux et les sondes spatiales envoyant des charges utiles dans l’espace et enfin de missiles ou de roquettes pour certains propulseurs d’armes.

PHR

Fusée à monergol, fusée à monoergol.

PHR

Fusée lunaire.

Spanish

Campo(s) temático(s)
  • Naves espaciales
DEF

Aeronave propulsada por gases en expansión, generados en su motor [...]

OBS

[...] son propulsores auto contenidos y no dependen de la entrada de substancias del exterior.

PHR

Cohete de propulsión iónica, cohete de propulsión plásmica.

Save record 1

Record 2 2007-08-21

English

Subject field(s)
  • Missiles and Rockets
  • White Products (Petroleum)
  • Launchers (Astronautics)
DEF

A rocket propellant consisting of a single substance, especially a liquid, capable of creating rocket thrust without the addition of a second substance.

CONT

A monopropellant is a chemical propulsion fuel which does not require a separate oxidizer. A rocket engine which is based on a monopropellant requires only one fuel line instead of a fuel and an oxidizer line. The "mono" in monopropellant means singular - a fuel that can function alone. A chemical propulsion system that combines like hydrogen and oxygen would be a bipropellant. A monopropellant burns by itself because the oxidizer is bound into the molecule itself. This makes the rocket engine lighter, less expensive, and more reliable. Monopropellant designs are typically used in control thrusters but not in actual propulsion units.

CONT

The most commonly used monopropellant is hydrazine (N2H4), a chemical which is characterized as "strongly reducing". The most common catalyst is granular alumina coated with iridium (aka. Shell-405). There is no igniter with hydrazine. Shell 405 is a spontaneous catalyst, that is, hydrazine decomposes on contact with the catalyst. The reaction is highly exothermic and produces an 1800°F (1000°C) gas that is a mixture of nitrogen, hydrogen and ammonia. Another monopropellant is hydrogen peroxide, which, when purified to 90% or higher concentration, is self-decomposing at high temperatures or when a catalyst is present.

French

Domaine(s)
  • Missiles et roquettes
  • Produits blancs (Pétrole)
  • Lanceurs (Astronautique)
DEF

Propergol ne contenant qu’un seul constituant dont la formation est endothermique ou dont la molécule contient à la fois le comburant et le combustible.

CONT

Le peroxyde d’hydrogène (eau oxygénée) et l’hydrazine sont des monoergols quand ils agissent par décomposition.

OBS

monergol : terme et définition uniformisés par le Groupe de travail de terminologie des munitions.

Spanish

Save record 2

Record 3 2001-02-15

English

Subject field(s)
  • Missiles and Rockets
  • Explosives and Pyrotechnical Materials (Industries)
  • Aircraft Propulsion Systems

French

Domaine(s)
  • Missiles et roquettes
  • Explosifs et artifices (Industries)
  • Propulsion des aéronefs

Spanish

Save record 3

Record 4 1981-11-23

English

Subject field(s)
  • Aeroindustry
CONT

Altitude is stabilized at this point by means of mono-propellant thrusters, whereupon the fourth stage apogee motor ignites to burn for 30 seconds to inject the payload into the desired elliptical orbit.

French

Domaine(s)
  • Constructions aéronautiques
CONT

L'altitude est stabilisée par des moteurs de type monoergol, et le quatrième étage s’allume alors et injecte le satellite sur l'orbite elliptique désirée.

Spanish

Save record 4

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