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FUEL BYPASS [11 records]

Record 1 2011-05-17

English

Subject field(s)
  • Aircraft Propulsion Systems
CONT

Over the entire speed range the single-flow jet engine is the thirstiest type, while at high subsonic speeds the bypass engine is the most economical with regard to fuel consumption.

Key term(s)
  • single flow jet engine

French

Domaine(s)
  • Propulsion des aéronefs
CONT

La mécanique des vols peut se révéler très utile dans de nombreux domaines tels que les appareils à décollage vertical, les missiles guidés ou encore les fusées sondes et les roquettes. Les appareils capables de décoller verticalement et par conséquent d’effectuer des vols stationnaires sont apparus après la Seconde Guerre Mondiale. Ce sont des forces propulsives produites par des réacteurs, des hélices ou encore des rotors qui rendent possible la sustentation de ce type d’appareils, et non pas la force aérodynamique comme sur les appareils «classiques». Leur consommation dépend des débits que brasse le moteur : plus ceux-ci seront importants, plus la consommation sera basse. Le rotor sera donc plus économique que le réacteur à simple flux par exemple.

OBS

single-flow : simple flux, flux unique (à), monoflux.

Key term(s)
  • réacteur simple flux

Spanish

Save record 1

Record 2 2010-02-10

English

Subject field(s)
  • Aeronautical Engineering and Maintenance
OBS

cooling flow passes from the ac hydraulic pump No. 2 bypass port, to the oil cooler located in the fuel tank No. 3, and then return to reservoir No. 2.

French

Domaine(s)
  • Aérotechnique et maintenance

Spanish

Save record 2

Record 3 2008-05-13

English

Subject field(s)
  • Aircraft Systems
DEF

A fluid displacement in a direction opposite to the normal flow direction.

CONT

[The] bypass check valve prevents fuel feed back through a failed pump.

French

Domaine(s)
  • Circuits des aéronefs
DEF

Mouvement d'un liquide dans le sens inverse de la normale.

CONT

La boîte à clapets contient : un clapet à flotteur qui peut obturer une prise dynamique d'air en cas de reflux du carburant par la tuyauterie [...]

Spanish

Save record 3

Record 4 2008-05-05

English

Subject field(s)
  • Pumps
  • Aircraft Propulsion Systems
CONT

A fuel boost pump bypass valve allows engine driven pumps to draw fuel from the main tanks if all boost pumps in the tank are inoperative.

French

Domaine(s)
  • Pompes
  • Propulsion des aéronefs
CONT

Le carburant refoulé par les pompes B.P. [...] après avoir été [...] filtré, est pris en charge par une pompe entraînée par le réacteur. Cette pompe augmente la pression du carburant [jusqu'à] 50 à 100 bars.

OBS

pompe entraînée par réacteur; pompe réacteur : termes uniformisés par les Comités d'uniformisation de la terminologie aéronautique (CUTA) - Opérations aériennes et Maintenance.

Spanish

Save record 4

Record 5 2008-01-08

English

Subject field(s)
  • Aircraft Systems
CONT

At 0045 : 37, when the airplane was at an altitude of about 3, 000 feet, the captain started the in-range checklist stating, "bypass is down. hydraulic pressure. quantity checks. AC [alternating current] pump is on. green light. fuel panel. boost pumps on. "

OBS

A.C.: Alternating current.

OBS

alternating current: Electric current that reverses direction periodically, usually many times per second.

Key term(s)
  • AC pump

French

Domaine(s)
  • Circuits des aéronefs
OBS

électropompe : Ensemble d'une pompe rotative et d'un moteur qui en assure l'entraînement.

OBS

alternatif : [Se dit d'un courant] dont l'intensité varie selon une sinusoïde (opposé à continu).

OBS

c.a. : courant alternatif.

OBS

électropompe c.a. : terme uniformisé par le Comité d'uniformisation de la terminologie aéronautique (CUTA) - Maintenance.

Spanish

Save record 5

Record 6 2007-12-05

English

Subject field(s)
  • Aeronautical Engineering and Maintenance
CONT

A further inspection of the aircraft’s fuel system was carried out in the hangar. ... The filter and filter bowl were examined. The filter was clear and the bowl contained almost no sediment. No foreign matter was found which would have restricted the flow of fuel to the engine.

OBS

Air frame fuel filter-security, leakage.... The filter assembly consists of a filter bowl, a replaceable filter element, a drain valve, a bypass valve, an impending bypass switch and a manual test button.

French

Domaine(s)
  • Aérotechnique et maintenance
OBS

cuve de filtre : terme uniformisé par le Comité d'uniformisation de la terminologie aéronautique (CUTA) - Maintenance.

Spanish

Save record 6

Record 7 2005-08-01

English

Subject field(s)
  • Aircraft Systems
DEF

A valve for regulating fuel or oil pressure in an engine by allowing excess fluid to bypass the pump.

French

Domaine(s)
  • Circuits des aéronefs

Spanish

Save record 7

Record 8 2002-11-18

English

Subject field(s)
  • Aircraft Propulsion Systems
OBS

A concentric ring at the backend of an afterburner that stabilizes the flame when the engine is in afterburner.

CONT

If installing gutter ring on spare part flameholder P/N 4906T117G02, line out the old part number/serial number and etch the spare part flameholder P/N and /N onto the gutter ring.

CONT

The Adour is a low bypass, twin-spool, axial flow turbofan engine.... The combustion chamber is of annular construction incorporating 18 fuel spray nozzles. Surrounding the core of the engine is the bypass duct, providing a bypass ratio of 0. 75 : 1. The jet pipe incorporates the reheat assembly, consisting of four concentric vapour gutter rings and two catalytic ignitors.

CONT

The swirling combustion flow of an afterburner with two V-gutter rings and six side-inlets is analyzed numerically by using two different combustion models.

OBS

gutter: Flameholder having cross-section generally in form of V, open side to rear, to create strong turbulence sufficient to keep flame attached.

French

Domaine(s)
  • Propulsion des aéronefs
OBS

Élément ayant la forme d'une couronne de côté, surmontée de tiges en forme de V, lui permettant de s'emboîter dans un accroche-flamme.

Spanish

Save record 8

Record 9 2000-07-24

English

Subject field(s)
  • Engines (Motor Vehicles)
  • Fueling Systems (Motor Vehicles)
  • Diesel Motors
DEF

Delay pintle nozzle with auxiliary hole, or holes, which permit fuel to bypass the throttling stage of initial needle lift.

French

Domaine(s)
  • Moteur (Véhicules automobiles)
  • Alimentation (Véhicules automobiles)
  • Moteurs diesel
DEF

Injecteur à recouvrement avec un ou plusieurs trous auxiliaires permettant au combustible de contourner l'étranglement du débit de levée d'aiguille.

Spanish

Save record 9

Record 10 1980-07-05

English

Subject field(s)
  • Closing Devices and Nozzles (Mechanical Components)
OBS

a fuel manifold dual check valve(...) is located at the junction of each boost pump discharge port and pump bypass.

French

Domaine(s)
  • Obturateurs et buses (Composants mécaniques)

Spanish

Save record 10

Record 11 1980-06-17

English

Subject field(s)
  • Mechanical Components
OBS

a boost pump bypass check valve(...) is installed in a line at the outlet of each fuel boost pump.

French

Domaine(s)
  • Composants mécaniques

Spanish

Save record 11

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