ERTA stage

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ERTA stage

Part of 11B97

Gerkules Nuclear Tug
Gerkules Nuclear Electric Interorbital Tug with 11B97 engine.
Credit: © Mark Wade

Electric/Xenon propellant rocket stage. At the beginning of the 1990's a new type of nuclear generator was studied, that would have a capacity of 150 kW in the transport role and provide 10-40 kW to power spacecraft systems while coasting. This was designated ERTA (ElecktroRaketnovo Transportnovo Apparat).

AKA: ERTA. Status: Study 1994. Thrust: 5.39 N (1.21 lbf). Gross mass: 21,000 kg (46,000 lb). Unfuelled mass: 12,000 kg (26,000 lb). Specific impulse: 3,000 s. Burn time: 47,304,000 s. Height: 20.00 m (65.00 ft). Diameter: 4.10 m (13.40 ft). Span: 25.00 m (82.00 ft).

Technologies and concepts for this engine were studied by FEI and other organizations. A modular concept was adopted. In 1994 ERTA was studied for launch by Titan, Ariane 5, or Energia-M launch vehicles. The reactor weight was 7500 metric tons and it could provide up to 10 years of electrical power traded off against 1.5 years of powered flight.

No Engines: 12.

Country: Russia. Engines: 11B97. Propellants: Electric/Xenon.

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