Encyclopedia Astronautica
Ariane 5 EC-B



ari5escb.jpg
Ariane 5 ESC-B
French orbital launch vehicle. The ultimate evolved Ariane 5 funded as of the end of the millenium. A larger Lox/LH2 upper stage using the Vinci motor in place of the HM7B. The core remains the same. Result is an increase in GTO payload from 10.5 tonnes to 12.0 tonnes.

Payload: 12,000 kg (26,000 lb) to a GTO, 7 deg.

Stage Data - Ariane 5 EC-B

  • Stage 0. 2 x Ariane 5 EAP. Gross Mass: 278,330 kg (613,610 lb). Empty Mass: 38,200 kg (84,200 lb). Thrust (vac): 6,470.000 kN (1,454,510 lbf). Isp: 275 sec. Burn time: 130 sec. Isp(sl): 250 sec. Diameter: 3.05 m (10.00 ft). Span: 3.05 m (10.00 ft). Length: 31.60 m (103.60 ft). Propellants: Solid. No Engines: 1. Engine: P241. Other designations: P241. Status: In Production. Comments: Increased propellant loading (+2.43 tonnes), lighter welded case (-1.6 tonnes) compared to earlier versions.
  • Stage 1. 1 x Ariane 5 EPC. Gross Mass: 186,000 kg (410,000 lb). Empty Mass: 12,700 kg (27,900 lb). Thrust (vac): 1,114.000 kN (250,437 lbf). Isp: 434 sec. Burn time: 650 sec. Isp(sl): 335 sec. Diameter: 5.46 m (17.91 ft). Span: 5.46 m (17.91 ft). Length: 30.50 m (100.00 ft). Propellants: Lox/LH2. No Engines: 1. Engine: Vulcain 2. Other designations: H173. Status: In Production. Comments: 15.2 tonnes increased propellant by moving liquid oxygen bulkhead.
  • Stage 2. 1 x Ariane 5 ESC B. Gross Mass: 27,500 kg (60,600 lb). Empty Mass: 3,400 kg (7,400 lb). Thrust (vac): 153.900 kN (34,598 lbf). Isp: 467 sec. Burn time: 700 sec. Diameter: 5.46 m (17.91 ft). Span: 5.46 m (17.91 ft). Length: 10.00 m (32.00 ft). Propellants: Lox/LH2. No Engines: 1. Engine: Vinci. Status: In production. Comments: New upper stage for Ariane 5.

Status: In development.
Gross mass: 790,000 kg (1,740,000 lb).
Payload: 12,000 kg (26,000 lb).
Height: 60.00 m (196.00 ft).
Diameter: 5.40 m (17.70 ft).
Thrust: 15,360.00 kN (3,453,060 lbf).

More... - Chronology...


Associated Countries
See also
  • Ariane 5 The Ariane 5 was a completely new design, unrelated to the earlier Ariane 1 to 4. It consisted of a single-engine Lox/LH2 core stage flanked by two solid rocket boosters. Preparatory work began in 1984. Full scale development began in 1988 and cost $ 8 billion. The design was sized for the Hermes manned spaceplane, later cancelled. This resulted in the booster being a bit too large for the main commercial payload, geosynchronous communications satellites. As a result, development of an uprated version capable of launching two such satellites at a time was funded in 2000. More...

Associated Manufacturers and Agencies
  • EADS French manufacturer of rockets. EADS, France. More...

Associated Stages
  • Ariane 5 ESC B Lox/LH2 propellant rocket stage. Loaded/empty mass 27,500/3,400 kg. Thrust 153.90 kN. Vacuum specific impulse 467 seconds. New upper stage for Ariane 5. More...
  • Ariane 5 EAP Solid propellant rocket stage. Loaded/empty mass 278,330/38,200 kg. Thrust 6,470.00 kN. Vacuum specific impulse 275 seconds. Increased propellant loading (+2.43 tonnes), lighter welded case (-1.6 tonnes) compared to earlier versions. More...
  • Ariane 5 EPC Lox/LH2 propellant rocket stage. Loaded/empty mass 186,000/12,700 kg. Thrust 1,114.00 kN. Vacuum specific impulse 434 seconds. 15.2 tonnes increased propellant by moving liquid oxygen bulkhead. More...

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