Encyclopedia Astronautica
P80


Solid propellant rocket stage. Loaded/empty mass 95,000/7,000 kg. Thrust 3,040.00 kN. Vacuum specific impulse 279.5 seconds. Vega's first stage, the P80 solid rocket motor, introduced advanced low-cost technologies that could be reused for future evolutions of Ariane-5 boosters.

The new technologies mainly consist of: a 3 m diameter graphite epoxy filament wound case; low density rubber for the internal insulation; low binder content and high aluminium percentage for the propellant (HTPB 1912); simplified nozzle architecture using low-cost and lighter carbon phenolic material; consumable casing for the igniter; and an electromechanical thrust vector control using lithium ion batteries.

Propellant Formulation: HTPB 1912.

Status: In production.
Gross mass: 95,000 kg (209,000 lb).
Unfuelled mass: 7,000 kg (15,400 lb).
Height: 10.50 m (34.40 ft).
Diameter: 3.00 m (9.80 ft).
Span: 3.00 m (9.80 ft).
Thrust: 3,040.00 kN (683,410 lbf).
Specific impulse: 280 s.
Specific impulse sea level: 231 s.
Burn time: 107 s.

More... - Chronology...


Associated Countries
Associated Engines
  • P80 Fiat-Avio solid rocket engine. 3040 kN. In production. Isp=279s. Vega's first stage, introduced advanced low-cost technologies that could be reused for future evolutions of Ariane-5 boosters. More...

Associated Propellants
  • Solid Solid propellants have the fuel and oxidiser embedded in a rubbery matrix. They were developed to a high degree of perfection in the United States in the 1950's and 1960's. In Russia, development was slower, due to a lack of technical leadership in the area and rail handling problems. Solid propellants have the fuel and oxidiser embedded in a rubbery matrix. They were developed to a high degree of perfection in the United States in the 1950's and 1960's. In Russia, development was slower, due to a lack of technical leadership in the area and rail handling problems. More...

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