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THROAT BLOCK [3 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2001-05-17

English

Subject field(s)
  • Launchers (Astronautics)
CONT

The Ausroc 3(A3) launch vehicle has a liquid fuelled motor that burns JA-1 kerosene with liquid oxygen, and uses regenerative cooling. The motor produces 35 kN at sea level and has a burn time of 80 seconds. The motor is gimballed to facilitate pitch and yaw control. The wall of the combustion chamber, throat and expansion nozzle consists of 102 stainless steel tubes stacked side by side running parallel to the motor axis. The tubes will be brazed together and the assembly wrapped in a carbon fibre composite. The composite wrapping is used to relieve to tubes of the hoop stress generated by the combustion pressure(2 MPa), whilst the tubes contain the combustion heat(3500 K). The top end of the motor has a kerosene inlet manifolt, oxygen dome and injector block. The kerosene inlet manifold delivers kerosene to every second motor tube, where it travels down to the arse end of the motor. Here it enters the lower kerosene manifold which is a simple plenum ring. This allows the kerosene to flow into the other alternate tubes which deliver it back up to the inlet manifold. The inlet manifold then directs the kerosene to the injector block, which sprays it and the liquid oxygen into the combustion chamber.

French

Domaine(s)
  • Lanceurs (Astronautique)
CONT

La fusée possède des moteurs à ergols liquides.

Spanish

Save record 1

Record 2 1999-11-26

English

Subject field(s)
  • Transport of Wood
  • Forestry Operations
  • Overhead Cableways
DEF

Any block on a spar-tree (or equivalent), through which the main line is reeved.

OBS

Formerly, when butt riggings were smaller, only a block having a throat that could pass them was termed a bull block.

Key term(s)
  • main line block

French

Domaine(s)
  • Transport du bois
  • Exploitation forestière
  • Transporteurs aériens sur câbles
DEF

Poulie fixée à un arbre-pylône, et qui guide le câble tracteur principal, à la station d'arrivée.

Spanish

Campo(s) temático(s)
  • Transporte de la madera
  • Explotación forestal
  • Transportadores aéreos por cable
Save record 2

Record 3 1981-12-30

English

Subject field(s)
  • Switchgear (Rail Transport)
OBS

FIST 01-09-293. Syn. :throat block(01-09-119) filler block(MOWA 21, 72).

French

Domaine(s)
  • Appareils de voie (Transport par rail)
OBS

AZZC fasc 1, p.6.

Spanish

Save record 3

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