$20m is a huge amount for the AF to award SpaceX for a simple "study." For comparison, that's about 25% of what the AF has paid SpaceX for previous launches and contracts.
Quote from: vaporcobra on 02/20/2018 07:39 pm $20m is a huge amount for the AF to award SpaceX for a simple "study." For comparison, that's about 25% of what the AF has paid SpaceX for previous launches and contracts. You made me go look at the SpaceX contracts again (like I didn't have enough to do today, thanks alot). I see about $600M total in publicly known DoD contracts now, which includes four launches (DSCOVR, STP-2, and 2xGPS) and the Raptor development funds.
I think Vc meant 25% of what the AF paid Sx for*one* launch....If we get a few more posts we can carve them out to a new thread.... for now I am not sure this isn't the best place?
The Air Force signed cost-sharing partnerships with ULA, SpaceX, Orbital ATK and Aerojet Rocketdyne. The original request for proposals noted the Air Force wants to “leverage commercial launch solutions in order to have at least two domestic, commercial launch service providers.”The next step is to select three companies this summer to move forward with enginet prototypes.“We are on schedule to make LSA awards in July 2018,” a spokesman for the Air Force Space and Missile Systems Center told SpaceNews.
http://spacenews.com/air-force-stakes-future-on-privately-funded-launch-vehicles-will-the-gamble-pay-off/QuoteThe Air Force signed cost-sharing partnerships with ULA, SpaceX, Orbital ATK and Aerojet Rocketdyne. The original request for proposals noted the Air Force wants to “leverage commercial launch solutions in order to have at least two domestic, commercial launch service providers.”The next step is to select three companies this summer to move forward with enginet prototypes.“We are on schedule to make LSA awards in July 2018,” a spokesman for the Air Force Space and Missile Systems Center told SpaceNews.
Quote from: su27k on 03/26/2018 05:22 amhttp://spacenews.com/air-force-stakes-future-on-privately-funded-launch-vehicles-will-the-gamble-pay-off/QuoteThe Air Force signed cost-sharing partnerships with ULA, SpaceX, Orbital ATK and Aerojet Rocketdyne. The original request for proposals noted the Air Force wants to “leverage commercial launch solutions in order to have at least two domestic, commercial launch service providers.”The next step is to select three companies this summer to move forward with enginet prototypes.“We are on schedule to make LSA awards in July 2018,” a spokesman for the Air Force Space and Missile Systems Center told SpaceNews.If the development of AR-1 is being scaled back (discussion in the ULA thread about the BE-4 vs AR-1 competition), does this indicate the Air Force will continue to fund raptor development?
Quote from: rockets4life97 on 03/26/2018 05:42 pmQuote from: su27k on 03/26/2018 05:22 amhttp://spacenews.com/air-force-stakes-future-on-privately-funded-launch-vehicles-will-the-gamble-pay-off/QuoteThe Air Force signed cost-sharing partnerships with ULA, SpaceX, Orbital ATK and Aerojet Rocketdyne. The original request for proposals noted the Air Force wants to “leverage commercial launch solutions in order to have at least two domestic, commercial launch service providers.”The next step is to select three companies this summer to move forward with enginet prototypes.“We are on schedule to make LSA awards in July 2018,” a spokesman for the Air Force Space and Missile Systems Center told SpaceNews.If the development of AR-1 is being scaled back (discussion in the ULA thread about the BE-4 vs AR-1 competition), does this indicate the Air Force will continue to fund raptor development?Raptor and AR-1 have absolutely nothing to do with each other.
One thing I'm not certain about in the above article, however, is Sandra's comment that "the next step is to select three companies this summer to move forward with enginet prototypes." If I understood this RFP correctly, the AF would actually be looking to fund three EELV prototypes - they've already funded prototypes of propulsion systems, systems now deep into hot-fire testing. I believe this was where we were anticipating potential proposals for OATK's NGL, Vulcan, FH/BFR/Raptor US, and perhaps even New Glenn.
Quote from: vaporcobra on 03/26/2018 07:29 pmOne thing I'm not certain about in the above article, however, is Sandra's comment that "the next step is to select three companies this summer to move forward with enginet prototypes." If I understood this RFP correctly, the AF would actually be looking to fund three EELV prototypes - they've already funded prototypes of propulsion systems, systems now deep into hot-fire testing. I believe this was where we were anticipating potential proposals for OATK's NGL, Vulcan, FH/BFR/Raptor US, and perhaps even New Glenn.I don't think that article is particularly well-written, it mixes together two separate programs.
Quote from: gongora on 03/26/2018 05:47 pmQuote from: rockets4life97 on 03/26/2018 05:42 pmQuote from: su27k on 03/26/2018 05:22 amhttp://spacenews.com/air-force-stakes-future-on-privately-funded-launch-vehicles-will-the-gamble-pay-off/QuoteThe Air Force signed cost-sharing partnerships with ULA, SpaceX, Orbital ATK and Aerojet Rocketdyne. The original request for proposals noted the Air Force wants to “leverage commercial launch solutions in order to have at least two domestic, commercial launch service providers.”The next step is to select three companies this summer to move forward with enginet prototypes.“We are on schedule to make LSA awards in July 2018,” a spokesman for the Air Force Space and Missile Systems Center told SpaceNews.If the development of AR-1 is being scaled back (discussion in the ULA thread about the BE-4 vs AR-1 competition), does this indicate the Air Force will continue to fund raptor development?Raptor and AR-1 have absolutely nothing to do with each other.Sorry. My mistake. I was reading the comment as the Air Force will select 2 and their are 3 options. If you take one away, you get 2 competitors for 2 options.
F9 with ASDS to 400 km circular LEO is 15,520 kg according to LSP. Pretty sure LSP still has pre Block 5 numbers, so 11,000 kg is way low.
Quote from: envy887 on 05/03/2018 05:23 pmF9 with ASDS to 400 km circular LEO is 15,520 kg according to LSP. Pretty sure LSP still has pre Block 5 numbers, so 11,000 kg is way low.Ed's table is using a higher LEO orbit.
Quote from: envy887 on 05/03/2018 05:23 pmIMO Blue will build New Glenn to service all the EELV requirements without a 3rd stage and with booster reuse, but we'll have to wait for some updated numbers to be sure on that.I've tried modeling New Glenn, and have found that the two-stage variant has a struggle trying to achieve the Heavy-class EELV-2 geosynchronous orbit number. That second stage is a giant thing that cuts into GEO performance. A small third, kick stage would easily get the job done though. - Ed Kyle
IMO Blue will build New Glenn to service all the EELV requirements without a 3rd stage and with booster reuse, but we'll have to wait for some updated numbers to be sure on that.
F9 with ASDS to 400 km circular LEO is 15,520 kg according to LSP. Pretty sure LSP still has pre Block 5 numbers, so 11,000 kg is way low. Block 5 with recovery is likely around 18,000 kg to a 200 km reference LEO.The 2017 presentation also shows 15,000 kg for F9 with booster reuse.IMO Blue will build New Glenn to service all the EELV requirements without a 3rd stage and with booster reuse, but we'll have to wait for some updated numbers to be sure on that.
“If you look at LSA and all those mission profiles, we can serve all of those with a single version of New Glenn with this two-stage architecture,” Mowry said.
Quote from: envy887 on 05/03/2018 07:19 pmAre you assuming the 10% dry mass and 1.0 TWR listed on your site? New Glenn will stage faster than Falcon 9, which only has a TWR of 0.75 at staging. I'm thinking NG will have an upper stage TWR around 0.7, so the stage should mass about 171 tonnes wet. Large LH2 stages get better mass ratios than small ones, so this should be approaching the S-II's 7.2% record. Call it 8%, and the dry mass would be 13.7 t.New Glenn second stage would be roughly S-IVB size rather than S-II size. (S-IVB weighed 120 tonnes give or take, fully fueled.) S-IVB with IU and residuals only had a 0.88-0.89 propellant mass fraction, so I feel I'm being generous with a 0.9 assumption.For a GEO mission, the model wants the final stage to weigh less, not more. The T/W at ignition ends up being higher than 0.75 simply because the stage and GEO payload together end up weighing about the same as the thrust of two BE-3U engines. - Ed Kyle
Are you assuming the 10% dry mass and 1.0 TWR listed on your site? New Glenn will stage faster than Falcon 9, which only has a TWR of 0.75 at staging. I'm thinking NG will have an upper stage TWR around 0.7, so the stage should mass about 171 tonnes wet. Large LH2 stages get better mass ratios than small ones, so this should be approaching the S-II's 7.2% record. Call it 8%, and the dry mass would be 13.7 t.
The highly anticipated LSA selection was originally scheduled to be announced in July but has slipped to “sometime in August,” a spokeswoman for the Air Force Space and Missile Systems Center told SpaceNews....Industry consultant Charles Miller, president of NexGen Space, speculated that ULA may have left the decision up to the Air Force. “My guess is that Tory is basically letting the Air Force choose his engine for him,” Miller told SpaceNews. ULA could have offered two options for Vulcan, one with the Aerojet engine and one with the Blue Origin engine.