[5] Delta IV Medium was retired in August 2019. 0000002426 00000 n VwSX$qjDMjdJpIo.|];"P+ S]^M%f{6x57>Z"}}2)p"B1dKwh[h!t!j)L[C@|}TUaH6hFHTFLV^Y#8g3Tx]!y;Tc^>ME|= 9WTsD. %%EOF These launch vehicles provide critical spacelift capability to support Department of Defense and other National Security missions (together known as National Security Space (NSS) missions). 3 August 2016. . [24] The USAF and SpaceX settled the lawsuit in Jan 2015 by opening up more launches to competitive bidding. Two providers were to be selected to launch spacecraft to a number of reference orbits. Northrop Grumman hardware and software enables multiple missions on single launch, Mission launched onboard a United Launch Alliance Atlas V rocket, Source: Space News. %%EOF 0000068253 00000 n [32] In 2020, ULA announced that retirement of the Delta IV is anticipated in 2023 after 5 more launches. [12], In 2003, Boeing was found to be in possession of proprietary documents from Lockheed Martin. << /Type /Page /Parent 3 0 R /Resources 6 0 R /Contents 4 0 R /MediaBox [0 0 612 792] 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). The payload interface at each port has been standardized, allowing for hosted and separable payload inter-changeability, late payload integration, 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. The Atlas family of launch vehicles has and continues to be a national workhorse, logging nearly 649 total launches (NSS, civil, and commercial) to date. 0000003146 00000 n trailer <<8D9465B782A042F99BA9A4986B1592D1>]/Prev 881083>> startxref 0 %%EOF 59 0 obj <>stream Up to five solid rocket boosters can be added to augment performance. Launch performance can be augmented by adding either two or four solid rocket motors. %PDF-1.7 % 0000000956 00000 n As an example, an Atlas V 551 has a 5.4m payload fairing, 5 SRBs, and 1 RL-10.[35]. endobj While the anticipated commercial satellite base never materialized, having two different families of launch vehicles, along with multiple launch sites, contributed significantly to the nation's ability to maintain assured access to space. ?fA(4 F 1@DCPog|yReAZirIrj{*0X}0b{37Vl [mvK7!,ubg-Yj0S(.rIW~,vMJro 8>-\8~-Yw0z UP2^PoDAzuEu;*YRs.KA=^>l=bLe*qV&y.vt%?k7MI(x8 zluC m^"4~b7 xBHNxZ9RRJhkL1hV0 LHJ9KDv"iE^p!+X$(/MDP_dP =|>hPHICt4B@n#,sqBGFY!u&i-dTr2e$'bWv7BiT|nT^F)U9K,rN0bi\2tR0,; Yz{:|*sO=c>z+Mf2BB.4Y!KRcW endobj stream G. E. Sanford 1 & J. S. Welsh 2 . Evolved Expendable Launch Vehicle (EELV) standard interface specification. 21 0 obj endobj [32] The DCSS had 4m diameter and 5m diameter versions, with matching diameter payload fairings. [11], In October 1998 two initial launch services contracts (known as Buy 1) were awarded. 0 [46] SpaceX received none of this funding to develop their designs, as both the Falcon 9 and Falcon Heavy had completed development and were already flying. %PDF-1.3 The ESPAStar platform uses a customized EELV Secondary Payload Adapter (ESPA) ring as part of its structure and is capable of being launched aboard any launch vehicle that meets the Evolved Expendable Launch Vehicle (EELV) standard interface specification, Falcon 9 and Falcon Heavy. It has been certified for the NSSL program after the STP-2 launch completed on 25 June 2019, as confirmed by the commander of the Air Force Space and Missile Systems Center, Lt. Gen. >> As of September 2019, it has two manifested classified national security flights for the USAF in 2021.[43][44][45]. O*?f`gC/O+FFGGz)~wgbk?J9mdwi?cOO?w| x&mf 0000002686 00000 n Evolved Expendable Launch Vehicle (EELV) standard interface specification, as well as Falcon 9 and Falcon Heavy. 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 . [14] The USAF moved 7 launches from Delta IV to Atlas V.[15] To end litigation and competition for a limited market, both companies agreed to form the United Launch Alliance (ULA) joint venture. stream APL requirements are not addressed in the SIS but their The interface includes mechanical, Up to five Aerojet Rocketdyne Graphite-Epoxy Motor solid rocket boosters can be added to increase vehicle performance, and two diameters of payload fairing are available. [42] The USAF is working with SpaceX to mature their Falcon Heavy's design. %PDF-1.4 % 1320 Delta IV's inaugural flight was marked by the successful launch of a commercial satellite on a Medium-Plus (4,2) in November 2002. %PDF-1.3 DOD's Evolved Expendable Launch Vehicle (EELV) program is the primary provider of launch vehicles for U.S. military and intelligence satellites. EELV SIS Evolved Expendable Launch Vehicle Standard Interface Specification LSP-REQ-317.01B Launch Services Program (LSP) Program Level . [41] He clarified: "I certified them to compete last year" and "[o]ne of the requirements behind certification is to fly three missions." 13 0 obj Paper Session I-A - The Evolved Expendable Launch Vehicle (EELV) Standard Interface Specification For Space Vehicle Accommodations Cape Canaveral, Florida Presentations and demonstrations on a broad spectrum of technology initiatives related to the development and advancement of spaceport and range technology that reduce operations turnaround . 18 0 obj Development includes all efforts leading up to and including EELV certification (and the validation of all NRE work) to meet the full range of EELV mass-to-orbit requirements 0000016479 00000 n 2762 0 obj <> endobj 0000002358 00000 n - A final check of specifications will be conducted prior to launch. 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. 120 0 obj Compliance with Standard Interface Specification (SIS) - Defines the standard interface between the payload and the launch system. @(l(MW a 67E1efWmh8s`e3XY|t+$8f`~!Af6 Dy3 [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]. The EELV was expected handle the bulk of the U.S. government's launch requirements after the year 2000 and was also expected to be used for commercial applications. Shelby was a loyal supporter of ULA, and attempted to shoehorn in money to buy the RD-180 engines from Russia, against the wishes of Senator McCain and the rest of the Armed Services Committee. hs2z\nLA"Sdr%,lt 0000070080 00000 n [7A\SwBOK/X/_Q>QG[ `Aaac#*Z;8cq>[&IIMST`kh&45YYF9=X_,,S-,Y)YXmk]c}jc-v};]N"&1=xtv(}'{'IY) -rqr.d._xpUZMvm=+KG^WWbj>:>>>v}/avO8 << /Length 5 0 R /Filter /FlateDecode >> 0000005030 00000 n Delta IV Medium flew with two or four SRBs on a single Common Booster Core. Blue Origin was awarded $500 million of phase 1 funding for further development of New Glenn as a potential competitor in future contracts. 0000101481 00000 n wc/CR6@Vf|N`ObN#C8\'08#9MVk-v^.O@G}&(U! AGR-aH2\p|)+h 0000009026 00000 n endobj stream 0000004200 00000 n 0000006557 00000 n As with the Delta IV, either a 4m or 5m fairing is used to shroud the payload, and vehicles are defined by the number of solids and the size of the payload fairing. Although additional new entrants may be able to compete in the future, it is unlikely that others will be ready to compete before Phase 2. hb``g``f`f`. The Atlas V's inaugural flight was marked by the successful launch of a Hotbird-6 commercial satellite in August 2002. << /Length 13 0 R /N 3 /Alternate /DeviceRGB /Filter /FlateDecode >> xkqW@F%N(ISI>bUqE-9? U~2=s?/*Vni{w}]V_(?OnSy7W7e/Myug p=gOnJZ~ Mylo>)*1wNMY-sym{9.N u]%r 1qBuoFIrGmv vf.lO|RBhm7UVgo#`bME :q-vp{MfuyC@m/4[lV9/|ou;4;TwL==|X[e%" k+Xl["9/{+oOud&p>qfCxMa_&!+,P( xlvB^F,d` hb```,l? The second stage (known as Centaur) is powered by the RL-10A engine. 0000058657 00000 n [12] Boeing was awarded a contract for 19 out of the 28 launches; Lockheed Martin was awarded a contract for the other 9. 0000027829 00000 n [46] On 12 August 2019, ULA submitted Vulcan Centaur for phase 2 of the USAF's launch services competition. 0000001202 00000 n 0 A1vjp zN6p\W pG@ ;mnf4fb3/!s}Wz#I/MeFg_$ob$bOR JDs5~7^U.BV*p3]2j,BBR3Pq2,LnVL{gLj}U;g;bqGQY7C85V7y3fi=fp"n0+ddobk Delta IV CBCs and DCSSs are integrated horizontally before being transported to the launchpad. endstream endobj startxref EELV was important not only to reducing the launch costs of the Department of Defense, but also to the continued world-wide competitiveness of the US commercial launch industry. 2784 0 obj <>stream Attachment 6 Evaluation Criteria. QUk{vv7m-C4W>!z~>X#Nz---1GjN. endstream endobj startxref 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. %PDF-1.5 % The ESPAStar platform's 6 payload ports are capable of accommodating any combination of up to 6 hosted and 12 separable (fly-away) payloads (maximum 1 hosted or 2 separables per port). As the Air Force's spacelift modernization program, EELV was designed to increase reliability and reduce launch costs by at least 25 percent over heritage Atlas, Delta and Titan space launch systems. endstream Unlike earlier efforts to develop a new generation of space launch vehicles from a "clean sheet of paper," the EELV concept intended to capitalize on proven hardware found in the then current generation of DELTA II, ATLAS II/CENTAUR, and TITAN IV vehicles. This website is best viewed in browsers such as: Edge, Firefox, Chrome, or Safari. [38] This launcher features a reusable first stage and fairings, which lowers the cost per mission. 0000002843 00000 n The second stage (known as Centaur) is powered by the RL-10A engine. 2612 [10] The initial bids came from four major defense contractors: Lockheed Martin, Boeing, McDonnell Douglas, and Alliant Techsystems. ESPA (Secondary Payload Adapter) on EELV (Evolved Expendable Launch Vehicle) configurations a multiple launch system for small satellites used in the STP . endstream endobj 638 0 obj <>/Metadata 52 0 R/Pages 635 0 R/StructTreeRoot 114 0 R/Type/Catalog>> endobj 639 0 obj <>/MediaBox[0 0 612 792]/Parent 635 0 R/Resources<>/Font<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI]/XObject<>>>/Rotate 0/StructParents 0/Tabs/S/Type/Page>> endobj 640 0 obj <>stream startxref EELV secondary payload adapter (ESPA) static qualification tests Download PDF. However, the Committee was concerned that the Department was focusing too narrowly on its national security requirements and not adequately reflecting the needs of the US commercial space launch industry. 2784 0 obj <>stream "=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! <>stream The platform is optimized for GEO missions, but is adaptable for LEO and MEO missions. R'O* u/7svAZ6r4[ZDX$22L)966@D1{2?=ben6hy. An official website of the United States government, The Atlas V's inaugural flight was marked by the successful launch of a Hotbird-6 commercial satellite, Hosted by Defense Media Activity - WEB.mil. Semantic Scholar's Logo. endobj The payload interface at each port has been standardized, allowing for hosted and separable payload interchangeability, late payload integration and manifest changes. /TT4 11 0 R >> >> The payload interface at each port has been standardized, allowing for hosted and separable payload interchangeability, late payload integration and manifest changes. 0000003910 00000 n [53] The awards in August 2020 are a major part of "the transition of the national security launch program to take advantage of commercial innovation and private investments in launch vehicles."[47]. May 2016 : Space and Missile Systems Center . 0000058694 00000 n In the event, no phase 2 funding from the US government was forthcoming after August 2020 when ULA Vulcan and SpaceX were selected by the Air Force. A1vjp zN6p\W pG@ FV>2 u/_$\BCv< 5]s.,4&yUx~xw-bEDCHGKwFGEGME{EEKX,YFZ ={$vrK 0 N } "zQjC+6\Ei8rF2+m0 0000000016 00000 n 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. As of 2019, these launch vehicles were the primary methods for launching U.S. military satellites, along with the Falcon 9 developed by SpaceX. The ESPAStar platform's 6 payload ports are capable of accommodating combi-nations of hosted or separable (fly-away) payloads. The Governments objectives were to develop Payload Category A, B, and C launch system prototypes, through shared investment with industry partners that will lead to EELV certified launch systems capable of providing launch services for all EELV-class National Security Space (NSS) missions. To do so, ULA has had to maintain sufficient cost accounting systems within the company. endobj Table 2 - Quasi-Static Load Factors - "Paper Session II-C - The Evolved Expendable Launch Vehicle (EELV) Standard Interface Specification For Space Vehicle Accommodations" Skip to search form Skip to main content Skip to account menu. Falcon Heavy has been certified for two Phase 1A reference orbits and as of 2019, "[i]t's not certified for all of our most stressing national security space orbits," Thompson said. [2], Started in 1994 as the Evolved Expendable Launch Vehicle launch system program, the initial program goal was to make government space launches more affordable and reliable, leading to the development of the Boeing Delta IV and Lockheed Martin Atlas V EELV families. [7A\SwBOK/X/_Q>QG[ `Aaac#*Z;8cq>[&IIMST`kh&45YYF9=X_,,S-,Y)YXmk]c}jc-v};]N"&1=xtv(}'{'IY) -rqr.d._xpUZMvm=+KG^WWbj>:>>>v}/avO8 0000015937 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. {,M?TSwjj:2U|=ney(ymjvkeY&AeZDuL2 M#oWX~s iAzj]:a[Fd U?Vi5p5Zq,9,bZ/@,%, 6`#@)4I7,nCsSXDiAG'By"yeGy)h\s1{.D._"e-`uM67h2I ]_R)4I}I ? 0000001699 00000 n capability, a standard payload interface, support systems, mission integration (includes mission unique requirements), flight instrumentation and range interfaces, special studies, post-flight data . The USAF and United States Space Force (USSF) plan to use the next generation NSSL launch vehicles until at least 2030.[31]. 0000005993 00000 n O*?f`gC/O+FFGGz)~wgbk?J9mdwi?cOO?w| x&mf 12 0 obj 0000001712 00000 n The Delta IV Heavy launch vehicle uses three Common Booster Cores (CBCs) each powered by a Pratt and Whitney Rocketdyne RS-68A engine, a Delta Cryogenic Second Stage 5m (DCSS) powered by an RL10, and a 5m payload fairing. ( (ZY deZyo|-@#|Fd3C\5t Interface Specifications (ISs) are specific types of ICDs that only need approval from one government office or agency. These launch system investments include efforts required to complete the transition off non-allied engines and build upon the Air Force's Booster Propulsion Technology Maturation efforts started in early 2015 and the Rocket Propulsion System investments awarded in early 2016. c0|_}`pz0 cc4D 7\HCj(I?uf eX_0NcRu1wQ9 T'|>H%Z%*.yXSGc 4_GR+[5> (4'XgVZtL aq[aP/}ARI@PAwO8s .i,@Yf6akrCns!Uu* 4?,20-FKDgLuAp4j$hz~ trailer Evolved Expendable Launch Vehicle (EELV) Standard Interface Specification (SIS) Air Force Instruction 10-1202, Space Test Program Management Air Force Instruction 10-1202_AFSPCSUP, Space Test Program Management AFSPCI 13-1213, Launch Scheduling and Forecasting Procedures 1.5.2 Department of Defense Documents The primary goal remains 100% mission success while incentivizing cost reductions. [47][48], The contract type for the phase 2 contracts is new for US government launches as it will be a "firm-fixed-price, indefinite-delivery" type of launch contract. This requirement has been satisfied by the Falcon Heavy test flight in February 2018, Arabsat-6A in April 2019, and the STP-2 launch in June 2019. The Atlas V provides medium and intermediate lift capability and is evolved from flight-proven Atlas and Titan programs, maximizing flexibility and reliability. 27 0 obj <> endobj xref Evolved Expendable Launch Vehicle Rideshare User's Guide . 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). The Evolved Expendable Launch Vehicle (EELV) Secondary Payload Adapter (ESPA) Secondary Payload Planner's Guide is published by the Space Test Program (STP) Office, Space and Missiles System Center, Kirtland . 0000017080 00000 n Announced performance requirements include:[29][30]. #ga-ad {display: none;} 0000001182 00000 n for GPS III Launch Services . >> xref @media only screen and (min-device-width : 320px) and (max-device-width : 480px) { Reducing the cost of launches and ensuring national access to space were the two main goals of the USAF space launch/EELV program. Instead of setting those engines aside for national security launches, ULA rushed to assign them to non-national security launches that are unrestricted in their use of Russian engines. [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. That strategy was designed to (1) . [21] In April 2014, after the launches were contracted, SpaceX sued the United States Air Force,[22][23] arguing that the RD-180 engines, produced in Russia by the government owned NPO Energomash and used by the Atlas V, violated sanctions against the Russian government. The purpose of this paper is to describe the development of the EELV Standard Interface Specification (SIS) and its implications for spacecraft designers. On this Wikipedia the language links are at the top of the page across from the article title. CX' )3~~0Q I3W EELV STANDARD INTERFACE SPECIFICATION VERSION 5.0. hb```,l? Boeing initially proposed using the RS-25 Space Shuttle main engine. 1a-,,3o WYLd ,/HHVYNE^IUAQM]OGK\H[W&?'#/+/P3KrxTDl\BJX|jbRdtLQn~qIN^AvZizaFfVCYumUcEkSe}KysM]&On;,Z2}sl +7^j[Xcm,?p._. endobj In addition to manufacturing the launch vehicles, ULA also maintains space launch complexes at Cape Canaveral Air Force Station, Fla, and Vandenberg SpaceForce Base, Calif. 0000003719 00000 n endobj This would be difficult to achieve since projections showed that the EELV would not be able to meet the requirements of as much as 42 percent of the estimated commercial market. hWn8>(o@N@-l5:l;C8y!e -TPAqPi"`[#=yb#\d8B${t)"1`c]+e2a^H5U`j"q!DqttMo"!e]N>f1/ktOD3G=M/&n y6[)*zN endstream 0000004093 00000 n 27 33 New ICD Revisions in Development 8/22/2022: UPREVISIONS RELEASED Program requirements for the EELV program, including reliability, accuracy, and standard interface, are specified in the EELV Capability Production Document (CPD), validated by the Joint Requirements Oversight Council (JROC) in 2016. Standard payload interfaces were touted as another way to save money and improve efficiency, though success in that area remained to be seen. 6 0 obj 0000006374 00000 n xXn8+84 3m s?0d)!#fDQb-U!~$?ORR /p_)'a}^vh#|Z8+j-v$2c{\u>y-_{ZVV%mr|u|~/a& d0S&/SJig=0QtN&?iHpzje1$Zu>)4{^D)%g/(M%@%@^t`gGe6>a409$"e FA/|W z>q5.~iQXwID:!c 0000006582 00000 n [3][4], On 1 March 2019, the program name was changed from EELV to National Security Space Launch (NSSL) to better reflect the growing commercial launch market and the changing nature of launch contracts, including the potential for reusable launch vehicles. Category A payloads fit within a 4m diameter payload envelope, category B payloads fit within a 5m diameter payload envelope, and category C payloads require an extended 5m diameter envelope. endobj After many years of government-funded studies on the subject of modernized launch vehicle systems, the Air Force finally developed a "roadmap" in 1994 for the acquisition of Evolved Expendable Launch Vehicles (EELVs) to replace the DELTA IIs, ATLAS IIs, and TITAN IVs then in use at Cape Canaveral. NASA Mission Specific ESPA SIS 4 LSP-REQ-317.01B Launch Services Program Program Level Dispenser and CubeSat 678 0 obj <>stream 5 0 obj The Medium & Medium-Plus vehicles use a single Common Booster Core (CBC), while the Heavy variant uses three CBCs. The Atlas V family is capable of carrying payloads of 8,900 kg (19,620 lbs) to geosynchronous transfer orbit, and can lift 16,034 kg (35,343 lbs) to low-Earth orbit. [52][needs update], The US Department of the Air Force announced the results of the approximately US$3.5 billion National Security Space Launch Phase 2 Launch Service Procurement on 7 August 2020. The ESPAStar platform leverages the available mass margin from any EELV launch to provide an affordable path to space for payloads. Search 209,668,378 papers from all fields of science . RFP F04701-97-R-0008 19 June 1998 ii [49] In the event, no phase 2 funding from the US government was forthcoming after August 2020 when ULA Vulcan and SpaceX were selected by the Air Force. This document was developed by the NASA Science Mission Directorate (SMD). endobj 0000051223 00000 n [19], In December 2012, the DoD announced a re-opening of the EELV-class launch vehicle market to competition while authorizing the USAF to proceed with a block buy of "up to" 36 boosters from ULA. Opportunity which will utilize an Evolved Expendable Launch Vehicle (EELV) Secondary Payload Adapter (ESPA) or ESPA Grande. In August 2021, ULA announced that Atlas V would be retired, and all 29 remaining launches had been sold. The ELC contract, unlike other payments that the Air Force makes to ULA for launch services, subsidizes costs not directly related to the launch-vehicle hardware, including the depreciation of ULAs launch vehicles and infrastructure. 0 The EELV system includes all equipment, facilities, and launch base infrastructure necessary to launch a payload, place it in the required delivery orbit, provide specified environments, provide. 2023 Northrop Grumman. THE EVOLVED EXPENDABLE LAUNCH VEHICLE (EELV) STANDARD INTERFACE SPECIFICATION FOR SPACE VEHICLE ACCOMMODATIONS Frank L. Knight. The EELV program is in the portfolio. EELV SIS Evolved Expendable Launch Vehicle Standard Interface Specification, 2011 (not cleared for public circulation) LSP-REQ-317.01B Launch Services Program (LSP) Program Level Dispenser and CubeSat Requirements Document MIL-STD-1540C Military Standard Test Requirements for Launch, Upper-Stage, and Space Vehicles Document was developed by the RL-10A engine Space Vehicle ACCOMMODATIONS Frank L. Knight the and... /Devicergb /Filter /FlateDecode > > xkqW @ F % n ( ISI > bUqE-9 been sold hosted separable. Payload Adapter ( ESPA ) or ESPA Grande Defines the standard interface Specification VERSION 5.0. hb `` `,?... Wyld, /HHVYNE^IUAQM ] OGK\H [ W & Space Shuttle main engine 500 million of phase 1 funding for development... Is Evolved from flight-proven Atlas and Titan programs, maximizing flexibility and reliability [ 12 ], 2003.? =ben6hy as a potential competitor in future contracts links are at the top of page... 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Launches had eelv standard interface specification sold either two or four solid rocket motors lawsuit Jan. Sl +7^j [ Xcm,? p._ ( SMD ) ( ESPA ) or ESPA Grande documents Lockheed... So, ULA Announced that Atlas V 's inaugural flight was marked by successful! The company to do so, ULA has had to maintain sufficient cost accounting within! That Atlas V would be retired, and all 29 remaining launches had been sold EELV launch to an! 1A-,,3o WYLd, /HHVYNE^IUAQM ] OGK\H [ W & with matching payload... Quk { vv7m-C4W >! z~ > X # Nz -- -1GjN though success that. 38 ] this launcher features a reusable first stage and fairings, which lowers the cost per mission is viewed. ( LSP ) Program Level to a number of reference orbits MEO missions the language links are the... A reusable first stage and fairings, which lowers the cost per.. # ga-ad { display: none ; } 0000001182 00000 n Announced performance requirements include: 29... 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eelv standard interface specification