Evolved Expendable Launch Vehicle Secondary Payload Adapter System Interface Specifications For . Evolved Expendable Launch Vehicle (EELV) Phase 1A Competitive Acquisition . x[n$ }hIY 7g8@/U}f9MHy^Z^~|^|TWmo<4c5UX|.Gqjs[6oc?y~x,D? 2 0 obj [39], GPS-IIIA USA-289 was the first NSSL-type B5 Falcon 9 launch. O*?f`gC/O+FFGGz)~wgbk?J9mdwi?cOO?w| x&mf Vehicles are defined by the number of solids and the width of the payload fairing. Delta IV Payload Planners Guide - October 1999 21 0 obj The payload interface at each port has been standardized, allowing for hosted and separable payload interchangeability, late payload integration and manifest changes. stream 0000051223 00000 n %%EOF This document was produced and is maintained by the Evolved Expendable Launch Vehicle ' Zk! $l$T4QOt"y\b)AI&NI$R$)TIj"]&=&!:dGrY@^O$ _%?P(&OJEBN9J@y@yCR nXZOD}J}/G3k{%Ow_.'_!JQ@SVF=IEbbbb5Q%O@%!ByM:e0G7 e%e[(R0`3R46i^)*n*|"fLUomO0j&jajj.w_4zj=U45n4hZZZ^0Tf%9->=cXgN]. ESPA is designed to quasi-static acceleration load factors that were derived from the EELV Standard Interface Specification Document (SIS). The approach taken in the development of. [17], Prior to 2012, the USAF was advancing another program, the Reusable Booster System and other follow-on technologies, and up to early 2012 issued contract awards for various aspects of it,[18] before the program was cancelled in October 2012. %PDF-1.3 [47] Blue Origin is considered likely to continue building and testing New Glenn, in part since they were already privately funding development prior to the Air Force NSSL competition. The EELV system included launch vehicles, infrastructure, support systems, and interfaces. [46] OmegA was a rocket design with two main solid stages, a cryogenic upper stage, and the possibility of additional solid-rocket strap-on boosters. nG +D,@g%ZKh?RgO>52orjm*R2C}H6m5W0_/om>+pZ}. Program cost savings are achieved through operability improvements such as the use of common components and infrastructure, a standard payload interface, standardized launch pads and reduced on-pad processing; and acquisition improvements such as launch vehicle block buys. Development is defined as all activities from initial concept up to, but not including, production. A1vjp zN6p\W pG@ Semantic Scholar's Logo. [33][34], Each Atlas V launch vehicle is based on a Common Core Booster powered by one NPO Energomash RD-180 engine with two combustion chambers and a Centaur upper stage powered by one or two Pratt & Whitney Rocketdyne RL10A-4-2 engines. These load factors, as shown in Table 1, represent a set of accelerations that 5 0 obj Along with the award of two development agreements, the total amount was more than $3 billion. hb```,l? The contractor was standardizing payload interfaces, launch pads, and infrastructure so that all configurations of each contractor's EELV family can be launched from the same pad and payloads can be interchanged between vehicles in the same class (i.e., medium, intermediate, or heavy). New ICD Revisions in Development 8/22/2022: UPREVISIONS RELEASED 0000027829 00000 n 0000003146 00000 n [35], A three-digit (XYZ) naming convention is used for the Atlas V configuration identification. FV>2 u/_$\BCv< 5]s.,4&yUx~xw-bEDCHGKwFGEGME{EEKX,YFZ ={$vrK The payload interface at each port has been In August 2021, ULA announced that Atlas V would be retired, and all 29 remaining launches had been sold. Abstract. The primary goal remains 100% mission success while incentivizing cost reductions. RFP F04701-97-R-0008 19 June 1998 ii [25][26] The USAF certified the Falcon 9 in May 2015,[27] and in 2016 SpaceX won a contract under the EELV program to launch a GPS Block III satellite payload to MEO. 0000000016 00000 n [8] Some of the reasons why assured access to space is a priority for the United States are stated in National Presidential Directive Number 40, which reads: Access to space through U.S. space transportation capabilities is essential to: The United States, therefore, must maintain robust, responsive, and resilient U.S. space transportation capabilities to assure access to space. << /Length 5 0 R /Filter /FlateDecode >> <> %PDF-1.3 @media only screen and (min-device-width : 320px) and (max-device-width : 480px) { Thompson. a new EELV acquisition strategy in November 2011, revising it in 2013. That includes five engines that ULA currently has in its possession, which are not limited by the sanctions, since they were fully paid for prior to the Russian invasion of Crimea. As with the Delta IV, either a 4m or 5m fairing is used to shroud the payload, and vehicles are defined by the number of solids and the size of the payload fairing. 0 [51], On 12 August 2019, at least three of the four companies submitted their final bids for the launch services competition. In working to introduce competition into launch contracts, the Air Force is changing its acquisition approach for launch services, including the amount of cost and performance data that it planned to obtain under future launch contracts. G. E. Sanford 1 & J. S. Welsh 2 . Delta IV's inaugural flight was marked by the successful launch of a commercial satellite on a Medium-Plus (4,2) in November 2002. Evolved Expendable Launch Vehicle (EELV) standard interface specification. Delta IV CBCs and DCSSs are integrated horizontally before being transported to the launchpad. The payload interface at each port has been standardized, allowing for hosted and separable payload inter-changeability, late payload integration, 6;6_.k Standard payload interfaces were touted as another way to save money and improve efficiency, though success in that area remained to be seen. The Evolved Expendable Launch Vehicle (EELV) system is being developed by the United States Air Force (USAF) and its prime contractors to meet the nations need for expend-able launch vehicles through the . "=pdsy8&$vHl"nt{ N kMw3ZN=z[aJ a-O z%Ay3CFKV'#3Y5QC(P7oG'Nc7z_`A&Bu0Y@#gn:y"f-Q M;]jDA\Iz$zY_af1 6 @R:#\DY%nsf^I! 2784 0 obj <>stream xwTS7" %z ;HQIP&vDF)VdTG"cEb PQDEk 5Yg} PtX4X\XffGD=H.d,P&s"7C$ The goal was the creation of a cost-efficient and reliable family (or families) of "right size" spacelifters based on standardized fairings, liquid core vehicles, upper stages, and solid rockets. 7 0 obj 0000001979 00000 n << /ProcSet [ /PDF /Text ] /ColorSpace << /Cs1 7 0 R >> /Font << /TT2 9 0 R endobj hbbd```b`` d#XD 0000058657 00000 n 0000004093 00000 n It uses 457,295 lbs (207,425 kg) of liquid oxygen and 169,008 lbs (76,660 kg) RP-1 rocket fuel propellants. National Security Space Launch ( NSSL) formerly Evolved Expendable Launch Vehicle (EELV) from 1994 to 2019 is a program of the United States Space Force (USSF) intended to assure access to space for United States Department of Defense and other United States government payloads. [37], The main features of the Falcon 9 in its current Block 5 version include two stages, both powered by LOX and RP-1, with nine Merlin 1D engines on the first stage and one Merlin 1D Vacuum engine on the second stage. In October 2018, the USAF awarded development funding to ULA, NGIS, and Blue Origin to further the design of their rockets before a subsequent competition for award to build the launch vehicles. }, Page last modified: National Security Space Launch (NSSL) formerly Evolved Expendable Launch Vehicle (EELV) from 1994 to 2019 is a program of the United States Space Force (USSF) intended to assure access to space for United States Department of Defense and other United States government payloads. A new EELV Acquisition Strategy was approved in November 2011 which recognizes only the Atlas V and Delta IV can currently provide reliable launch services to meet NSS requirements but also seeks to take advantage of the growing potential of additional commercial space launch providers. << /Type /Page /Parent 3 0 R /Resources 6 0 R /Contents 4 0 R /MediaBox [0 0 612 792] The Atlas V family uses a Russian RD-180 to power the first stage Common Core Booster. %PDF-1.4 % 0000005993 00000 n << /ProcSet [ /PDF /Text ] /ColorSpace << /Cs1 7 0 R >> /Font << /TT8 15 0 R As of September 2019, it has two manifested classified national security flights for the USAF in 2021.[43][44][45]. >6?L`a,Epa_> DHh0D@z5+?w The EELV competition was expected to produce the next generation of launch vehicles to replace all medium to heavy launchers, Lockheed Martin's Atlas, Titan II and Titan IV series, and McDonnell Douglas's Delta series, with a single family of vehicles capable of launching medium and heavy payloads into orbit at a significantly lower cost. [50], ULA was awarded $967 million of phase 1 funding for further development of Vulcan as a potential competitor in future contracts. EELV secondary payload adapter (ESPA) static qualification tests Download PDF. VwSX$qjDMjdJpIo.|];"P+ S]^M%f{6x57>Z"}}2)p"B1dKwh[h!t!j)L[C@|}TUaH6hFHTFLV^Y#8g3Tx]!y;Tc^>ME|= 9WTsD. 0000070080 00000 n Each of the bids included a variety of concepts. The launch occurred on December 23, 2018.[40]. 0000000776 00000 n stream The RSS is offered only onEvolved Expendable Launch Vehicle (EELV) LVs certified to launch National Security Space missions; hence, APLs must not violate EELV requirements documented in the EELV Standard Interface Specification (SIS) and/or System Performance Requirement Document (SPRD). 15 0 obj stream Although additional new entrants may be able to compete in the future, it is unlikely that others will be ready to compete before Phase 2. [42] The USAF is working with SpaceX to mature their Falcon Heavy's design. The 4m diameter DCSS was retired with the Delta IV Medium after the 22 August 2019 launch of a GPS-III satellite on a Delta IV M+(4,2) two SRBs, and a 4m diameter DCSS and payload fairing. 0000068216 00000 n 0000001712 00000 n Blue Origin was awarded $500 million of phase 1 funding for further development of New Glenn as a potential competitor in future contracts. SpaceX bid the existing launch vehicles of Falcon 9 and Falcon Heavy, while Blue Origin was expected to bid New Glenn, ULA bid Vulcan Centaur, and NGIS's bid status was not reported. Senator Richard Shelby is from Alabama. 0 N } "zQjC+6\Ei8rF2+m0 [5][6], The NSSL program launches the nation's most valuable military satellites; contracts to launch lower value payloads, such as those of the Space Test Program, are awarded using different methodologies.[7]. 0000001790 00000 n 0000002177 00000 n i`zN$KgyHDis+hj^@BV/C4v3bKAj. The interface includes mechanical, {!Kd#5:#[T$FhTs;*(Ai((4N|radRbt!BHx2eq(*xiTxa$m|+Id99uLA@(C!#Oro;{N4"#. On this Wikipedia the language links are at the top of the page across from the article title. 0000010608 00000 n xwTS7" %z ;HQIP&vDF)VdTG"cEb PQDEk 5Yg} PtX4X\XffGD=H.d,P&s"7C$ The EELV program is a funded U.S. Air Force acquisition program of record that provides space launch services for national security space (NSS) payloads. [48], Northrop Grumman was awarded US$792 million of phase 1 funding in 2018 for development of OmegA. . << /Length 16 0 R /Filter /FlateDecode >> hbbd```b`` D:H3YH22H5,)qS =A&]8 I The Atlas V's inaugural flight was marked by the successful launch of a Hotbird-6 commercial satellite in August 2002. The procedure and process for development, control, and maintenance is the same for ICDs and ISs. 19 0 obj Boeing initially proposed using the RS-25 Space Shuttle main engine. The ESPAStar platforms six payload ports are capable of accommodating any combination of up to six hosted and 12 separable (fly-away) payloads (maximum one hosted or two separables per port). Under Solicitation Number FA8811-16-R-000X, released 14 March 2017, Air Force Space Command - Space and Missile Systems Center draft solicitation ws to implement the Evolved Expendable Launch Vehicle (EELV) strategy to transition from the use of "non-allied" [aka Russian RD-180] engines and to implement affordable assured access to space via sustainable competition with commercial providers. 0000017011 00000 n The second stage (known as Centaur) is powered by the RL-10A engine. The Atlas V family uses a Russian RD-180 to power the first stage Common Core Booster. 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