I'm a bit surprised this RFP was released before the Defense spending bill is finalized, you'd think they wouldn't do this unless they're sure of getting the funding?
Quote from: gongora on 10/06/2017 07:26 pmI'm a bit surprised this RFP was released before the Defense spending bill is finalized, you'd think they wouldn't do this unless they're sure of getting the funding?Would not the current Continuing Resolution provide sufficient authority?
It's appears Rob a draft RFP and not the final RFP.
Per national policy, the Air Force intends to ensure that there are two reliable sources for all nationalsecurity launches
Offerors may submit no more than two proposals per company. Each proposal shall only include oneproposed EELV Launch System prototype. The prototype can be developed using an incrementalapproach, such as achieving the launch capability for Payload Categories A and B prior to achievinglaunch capability for Payload Category C. The Government will award a maximum of one agreementfor one EELV Launch System prototype per company. The Government plans to award a portfolio ofat least three agreements, but reserves the right to award any number of agreements, including none
3.1.2 Section II: Factor 1 EELV ApproachThe Offeror shall describe its approach to develop and qualify a launch system that meets EELVlaunch service requirements. The SPRD and SIS are listed in Annex C, Attachment 4. At a minimum,the Offeror shall address the following topics:1. The ability to meet all EELV reference orbits defined in Table 10 at the orbital insertionaccuracy required in SPRD 3.2.42. The ability to support up to five NSS launches per year3. The ability of the launch system to meet the payload orientation requirement in SPRD 3.2.74. The ability of the launch system to meet the basing requirement in SPRD 3.2.115. The ability of the launch system to meet the EELV mated payload protection requirement inSPRD 3.3.26. The ability of the launch system to meet the payload envelope requirement in SIS 3.1.37. The proposed mission assurance approach to ensure low risk and high confidence in launchingNSS missions8. The ability to slow or surge production to accommodate uncertain NSS, commercial, and civillaunch forecasts
3.1.6.2 Non-Exclusivity of Rocket Propulsion System (RPS) SalesThe Offeror shall provide a signed letter acknowledging understanding of the FY15 NDAA Section1604 (E) requirement that any RPSs developed under this LSA will be available for purchase by allspace launch providers of the United States. The implementation of this requirement is addressed inArticle XIX of the Model Agreement (Annex C). If the Offeror is not proposing to develop anyRPSs under this LSA, the Offeror shall provide a letter with that statement.3.1.6.3 RPS Developed By Not Later Than 2019The Offeror shall provide a signed letter stating whether or not the RPS(s) developed under this LSAare scheduled to complete development by 31 December 2019. The letter shall include a reference tothe related tasks in the schedule (Section 3.1.3.2).
The Government will evaluate the Offeror’s schedule to determine the risk of delayed developmentfor:1. Launch system(s) capable of launching Category A and Category B payloads by 1 October2021 from Cape Canaveral Air Force Station/Kennedy Space Center or Vandenberg AirForce Base2. Launch system(s) capable of launching Category A and Category B payloads from VandenbergAir Force Base by 1 October 20243. Launch system(s) capable of launching Category C payloads by 1 October 2024 fromVandenberg Air Force Base
Quote from: rocketmantitan on 10/07/2017 04:46 amGotta love the Air Force using nautical miles in the requirements documents! Haven't changed in 20 years. Do any of their industrial base or their Aerospace Corporation technical arm even use those units anymore? Probably not. Must be a bit of a pain for industry to rewrite their GNC performance analyses to convert back to nautical miles in order to submit their proposal. Hard to believe that the U.S. adopted the metric system in 1866. Still, nautical miles remain widely used in aeronautics and sailing in the U.S.. - Ed Kyle
Gotta love the Air Force using nautical miles in the requirements documents! Haven't changed in 20 years. Do any of their industrial base or their Aerospace Corporation technical arm even use those units anymore? Probably not. Must be a bit of a pain for industry to rewrite their GNC performance analyses to convert back to nautical miles in order to submit their proposal.
Has anyone done an analysis of whether the main contenders (Vulcan, New Glenn, BFR) as currently designed can meet the payloads required for each reference orbit?
I don't think I'd call BFR a main contender for this, the Falcon family would be more likely.
Quote from: gongora on 10/11/2017 03:04 pmI don't think I'd call BFR a main contender for this, the Falcon family would be more likely. I suppose that depends on how seriously you take Elon Musk's claim to transition in the early 2020s away from the Falcon 9/FH to BFR. It doesn't look like SpaceX needs much development money for Falcon 9/FH.
Quote from: rockets4life97 on 10/11/2017 04:13 pmQuote from: gongora on 10/11/2017 03:04 pmI don't think I'd call BFR a main contender for this, the Falcon family would be more likely. I suppose that depends on how seriously you take Elon Musk's claim to transition in the early 2020s away from the Falcon 9/FH to BFR. It doesn't look like SpaceX needs much development money for Falcon 9/FH.I don't think anyone is going to count on SpaceX meeting that schedule for BFR flights, and you may be underestimating the amount left to spend on development of vehicles and facilities for the Falcon line to fully meet the DoD requirements.
Quote from: edkyle99 on 10/09/2017 02:53 amHere are those reference payloads in metric units.The "C" Category missions, especially "GEO2", are the "Heavy" missions. Everything else appears to be "Medium" type. EELV REFERENCE ORBITSORBIT MASS CATEGORY-----------------------------------------------------------LEO 926 km x 63.4 deg 6,804 kg A&BPolar 1 833 km x 98.2 deg 7,030 kg A&BPolar 2 833 km x 98.2 deg 17,010 kg C MEO 1 18,177 km x 50 deg 5,330 kg A&BMTO 1 1,000 x 20,368 km x 55 deg 4,082 kg A&BMEO 2 20,368 km x 55 deg 4,082 kg A&BMTO 2 1,000 x 20,368 km x 55 deg 5,080 kg A&BGTO 185 x 35,786 km x 27 deg 8,165 kg A&BMolniya 1,204 x 39,170 km x 63.4 deg 5,216 kg A&BGEO 1 35,786 km x 0 deg 2,268 kg A&BGEO 2 35,786 km x 0 deg 6,577 kg C---------------------------------------------------------CategoriesA: 4 meter diameter PLFB: 5 meter diameter PLFC: 5 meter diameter Extended PLFI'm going to modify my original statement about Heavy versus Medium type missions. The "MEO 1" and "MEO 2" look like they might also fit in to the "Heavy" category, or what used to be "Heavy". These payloads have increased from today's 1.6-ish tonnes to more than 5.3 tonnes - quite a jump. My assessment is that Falcon 9, NGL 500, and the lower-end Vulcan-Centaur variants can handle the "Medium" missions. (Some of the F9 first stages could be recovered, but probably not all). The "Heavy" missions require Falcon Heavy Recoverable or possibly Falcon 9 expendable, NGL 500XL, or Vulcan with "Enhanced" Centaur. The crossover point between Falcon 9 expendable and Falcon Heavy Recoverable is uncertain to me.FWIW, two-stage New Glenn looks capable of handling any of these missions, Medium or Heavy, but that assumes a long-coast to third restart capability is available. - Ed Kyle
Here are those reference payloads in metric units.The "C" Category missions, especially "GEO2", are the "Heavy" missions. Everything else appears to be "Medium" type. EELV REFERENCE ORBITSORBIT MASS CATEGORY-----------------------------------------------------------LEO 926 km x 63.4 deg 6,804 kg A&BPolar 1 833 km x 98.2 deg 7,030 kg A&BPolar 2 833 km x 98.2 deg 17,010 kg C MEO 1 18,177 km x 50 deg 5,330 kg A&BMTO 1 1,000 x 20,368 km x 55 deg 4,082 kg A&BMEO 2 20,368 km x 55 deg 4,082 kg A&BMTO 2 1,000 x 20,368 km x 55 deg 5,080 kg A&BGTO 185 x 35,786 km x 27 deg 8,165 kg A&BMolniya 1,204 x 39,170 km x 63.4 deg 5,216 kg A&BGEO 1 35,786 km x 0 deg 2,268 kg A&BGEO 2 35,786 km x 0 deg 6,577 kg C---------------------------------------------------------CategoriesA: 4 meter diameter PLFB: 5 meter diameter PLFC: 5 meter diameter Extended PLF
EELV REFERENCE ORBITSORBIT MASS CATEGORY-----------------------------------------------------------LEO 926 km x 63.4 deg 6,804 kg A&BPolar 1 833 km x 98.2 deg 7,030 kg A&BPolar 2 833 km x 98.2 deg 17,010 kg C MEO 1 18,177 km x 50 deg 5,330 kg A&BMTO 1 1,000 x 20,368 km x 55 deg 4,082 kg A&BMEO 2 20,368 km x 55 deg 4,082 kg A&BMTO 2 1,000 x 20,368 km x 55 deg 5,080 kg A&BGTO 185 x 35,786 km x 27 deg 8,165 kg A&BMolniya 1,204 x 39,170 km x 63.4 deg 5,216 kg A&BGEO 1 35,786 km x 0 deg 2,268 kg A&BGEO 2 35,786 km x 0 deg 6,577 kg C---------------------------------------------------------CategoriesA: 4 meter diameter PLFB: 5 meter diameter PLFC: 5 meter diameter Extended PLF
Quote from: TrevorMonty on 10/13/2017 09:48 amBlue's NG would most likely require 3rd stage for GEO 2 mission. At 13t to GTO it only has 6t of fuel to deliver 7t payload plus stage dry mass to GEO. After looking at my model in detail, I agree. New Glenn would need a third stage for GEO and for the two MEO missions. - Ed Kyle
Blue's NG would most likely require 3rd stage for GEO 2 mission. At 13t to GTO it only has 6t of fuel to deliver 7t payload plus stage dry mass to GEO.