Did RS-72 ever finish development? If so, that seems like it should be a strong contender. Same propellants as AJ10-190, but twice the thrust and a 24 second ISP increase, could substantially improve performance. Its a gas generator engine though, which could affect safety.
Quote from: brickmack on 02/26/2017 02:36 pmDid RS-72 ever finish development? If so, that seems like it should be a strong contender. Same propellants as AJ10-190, but twice the thrust and a 24 second ISP increase, could substantially improve performance. Its a gas generator engine though, which could affect safety.Uprated OMS completed development at Aerojet, flight hardware was constructed and qualified and accepted, but never integrated into STS. So far as I know, there are several shipsets of these engines sitting on shelves. I believe five pairs were completed.
Aerojet Rocketdyne is supporting refurbishment of Shuttle OMS-E engines for use as the Orion Main Engine (OME) during the Exploration Mission-1 flight. The refurbished Shuttle engines will provide 6,000 lbf of thrust to support major in-space maneuvers of the Orion spacecraft.
You mean these ones ?
Space19+ results also give ESA mandate to start procuring ‘long-lead items’ that require more time to develop and build – allowing industrial partners to prepare early equipment needed for a fifth and sixth European Service Module.
Still no indication how much ESA is spending on ESM (as opposed to how much contractors are getting)?
AFP says contract value is 650 million €. As a reference when ESM-3 was signed the figure provided was 250 million €.
... the fourth Service Module structure is expected to arrive in the Summer. This module will be part of the Artemis IV mission and will see Orion push the I-Hab crew module to the lunar Gateway.ESA’s regular Ministerial Council will be held in November of this year where the delegates from the Member States will discuss and decide on the future of the next round of European Service Modules: seven, eight and nine.