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GEAR UPLOCK [10 records]

Record 1 2010-02-11

English

Subject field(s)
  • Gears and Friction Wheels
  • Aeronautical Engineering and Maintenance
OBS

gear-up pressure is(...) routed to the [main landing gear] and [nose landing gear] actuators, the uplock release cylinders, and the [main landing gear] door-closing actuators.

French

Domaine(s)
  • Engrenages et roues de friction
  • Aérotechnique et maintenance

Spanish

Save record 1

Record 2 2010-02-10

English

Subject field(s)
  • Aeronautical Engineering and Maintenance
OBS

automatic wheel stoppage(in-flight braking) and brake pressure shutoff are provided to prevent excessive load buildup in the [main landing gear] retraction and uplock mechanism.

French

Domaine(s)
  • Aérotechnique et maintenance

Spanish

Save record 2

Record 3 2008-12-23

English

Subject field(s)
  • Landing Gear (Aeroindustry)
CONT

The manufacturer's parts manual shows part number 5453032-1 to be that of a landing gear uplock roller for this type of aircraft's vice bellcrank roller; it is made of a solid bushing material.

French

Domaine(s)
  • Atterrisseur (Constructions aéronautiques)
CONT

D'après le manuel de pièces du constructeur, la pièce portant la référence 5453032-1 est un galet de verrouillage train rentré pour ce type d'avion, au lieu d'être un galet de guignol; elle est fabriquée d'un solide matériau de coussinet.

Spanish

Save record 3

Record 4 2008-04-22

English

Subject field(s)
  • Flight Controls (Aeroindustry)
  • Landing Gear (Aeroindustry)
CONT

The MLG [main landing gear] retracts inwards into the fuselage wheel well. Each MLG has two doors. The outboard door is rigidly attached at the strut. The inboard door operates by mechanical linkage to the strut and is held in up position by two uplock cylinders. This uplock is released when landing gear lever is placed in down position by hydraulic pressure, or by nitrogen pressure in emergency. The MLG is held, while airborne, in retracted position by hydraulic pressure in the actuator and by the inboard door mechanical uplock, if pressure drops. As the gear is extended, an internal lock in the actuator automatically locks it in fully extended positions.

French

Domaine(s)
  • Commandes de vol (Constructions aéronautiques)
  • Atterrisseur (Constructions aéronautiques)
CONT

La séquence d'extension/rétraction des trains est conditionnée par la position du levier de commande «rentrée/sortie» des trains et par la réponse des détecteurs de positions du train et des trappes. Elle commande successivement l'ouverture des trappes, le déverrouillage du train, l'extension du train, le verrouillage du train en position basse, puis la fermeture des trappes principales (et inversement lors de la rétraction).

OBS

levier de commande train; levier train : termes uniformisés par les Comités d'uniformisation de la terminologie aéronautique (CUTA) - Opérations aériennes et Maintenance.

Spanish

Save record 4

Record 5 2008-02-20

English

Subject field(s)
  • Landing Gear (Aeroindustry)
OBS

uplock : A mechanical lock securing device, e. g. landing gear, in up or housed position.

French

Domaine(s)
  • Atterrisseur (Constructions aéronautiques)
OBS

Le verrouillage train rentré ou accrochage s'effectue par un dispositif d'accrochage mécanique à la jambe.

OBS

mécanisme de verrouillage en position rentrée : terme uniformisé par le Comité d'uniformisation de la terminologie aéronautique (CUTA) - Maintenance.

Spanish

Save record 5

Record 6 2008-01-21

English

Subject field(s)
  • Landing Gear (Aeroindustry)
DEF

A small cylindrical or conical wheel used to guide or to support a mobile mechanical part.

CONT

The roller installed on the outboard landing gear bellcrank was of a smaller diameter than the required part and was designed to be used as an uplock roller vice bellcrank roller. The smaller diameter of the roller reduced the required clearance in relation to the roller's location on the heel of the positioning cam. Repetitive landing loads transmitted through the drag brace were initially absorbed by the roller hitting the lip of the cam, until the lip of the cam was worn away.

French

Domaine(s)
  • Atterrisseur (Constructions aéronautiques)
DEF

Petite roue cylindrique ou conique servant de guidage ou d'appui à une pièce mécanique mobile.

CONT

Le diamètre du galet monté sur le guignol extérieur du train était inférieur à celui de la pièce requise, et ce galet avait été conçu pour être utilisé comme galet de verrouillage train rentré plutôt que comme galet de guignol. Le diamètre plus faible du galet a réduit l'espacement nécessaire par rapport à la position du galet sur le talon de la came de positionnement. Les charges répétitives à l'atterrissage transmises par la contrefiche ont initialement été absorbées par le galet qui a percuté le rebord de la came jusqu'à ce que ce dernier soit complètement usé.

OBS

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

Spanish

Save record 6

Record 7 1987-02-06

English

Subject field(s)
  • Landing Gear (Aeroindustry)
CONT

The nose gear uplock release mechanism provides a mechanical means for upsetting the nose gear overcenter linkage and releasing the nose gear from the uplocked position when hydraulic pressure is not available to extend the gear. The uplock release mechanism consists of a cable, cable sector, shaft, return spring, and upset arm.

CONT

The uplock release mechanism and pressure can are installed on the pressure bulkhead above the nosegear strut. Part of the mechanism is installed inside the pressure can and is accessible through the floor panel under the rudder pedals in the forward part of the flight compartment. The external portion of the mechanism is accessible through the nosegear doors.

French

Domaine(s)
  • Atterrisseur (Constructions aéronautiques)
OBS

mécanisme de déverrouillage train rentré : terme accepté par le Comité d'étude de la terminologie des cartes de travail du DC-9.

Spanish

Save record 7

Record 8 1983-09-15

English

Subject field(s)
  • Pneumatic Hoisting and Lifting
OBS

normal [main landing gear] extension is accomplished by hydraulic actuation of both uplock release cylinders and [main landing gear].

French

Domaine(s)
  • Levage pneumatique
OBS

par inférence. Un vérin hydraulique, agissant sur le guignol principal, assure le déverrouillage.

Spanish

Save record 8

Record 9 1980-07-25

English

Subject field(s)
  • Air Transport
OBS

automatic wheel stoppage(in-flight braking) and brake pressure shutoff are provided to prevent excessive load buildup in the [main landing gear] retraction and uplock mechanism.

French

Domaine(s)
  • Transport aérien

Spanish

Save record 9

Record 10 1980-07-05

English

Subject field(s)
  • Coils and Windings (Electrical Components)
OBS

the coil circuit of the power relay is routed through the left main landing gear uplock switch. This allows the accelerometer to operate only when the main landing gear is retracted.

French

Domaine(s)
  • Bobines et bobinage (Composants électrotechniques)

Spanish

Save record 10

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