[11], In October 1998 two initial launch services contracts (known as Buy 1) were awarded. Expendable launch system program of the United States Space Force, List of Falcon 9 and Falcon Heavy launches (20102019) 2018, "Space Systems Command Celebrates First Anniversary as USSF Field Command", "JUST IN: National Reconnaissance Office Embracing Commercial Tech", "Defense Primer: National Security Space Launch", "EELV isn't what it used to be: Air Force changes launch program name", "Air Force establishes National Security Space Launch program", "National Security Presidential Directive 40: U.S. Space Transportation Policy", "Two Former Boeing Managers Charged in Plot to Steal Trade Secrets from Lockheed Martin", "Pentagon strips 7 launches from Boeing Delta 4 rocket", "Reusable Successor To EELV Moving Ahead", "Prototype Reusable Rocket Effort Felled by U.S. Budget Woes", "EELV Update: A Split Decision and a New Beginning", "SpaceX Awarded Two EELV-Class Missions from the United States Air Force", "After successful landing, SpaceX to sue Air Force to compete for launch contracts", "SpaceX wins intermediate victory over US in launch contract case", "SpaceX says rocket purchases violate Russian sanctions, gets injunction", "SpaceX elbows into Air Force launch program after dropping lawsuit", "SpaceX, Air Force Settle Lawsuit over ULA Blockbuy", "SpaceX Falcon 9 Certified for Military Launches", "SpaceX wins $82 million contract for 2018 Falcon 9 launch of GPS 3 satellite", Nine reference orbits & payloads for USDoD space missions, "DOD Releases Fiscal Year 2021 Budget Proposal", "ULA Delta IV launches the NROL-25 military satellite from VAFB", "United Launch Alliance Successfully Launches GPS III Satellite for U.S. Air Force Space and Missile Systems Center", "Delta IV Medium's well-earned retirement with GPS finale", "ULA stops selling its centerpiece Atlas V, setting path for the rocket's retirement", "ULA targeting September 26 for next Delta 4-Heavy launch attempt", "SpaceX flies historic 10th mission of a Falcon 9 as Starlink constellation expands", "Air Force requirements will keep SpaceX from landing Falcon 9 booster after GPS launch", "Air Force certified Falcon Heavy for national security launch, but more work needed to meet required orbits", "Air Force certified Falcon Heavy for national security launch but more work needed to meet required orbits", SpaceX wins $130 million military launch contract for Falcon Heavy, U.S. department of defense - Contracts for February 19, 2019, SMC Issues Final RFP For Five EELV Launches; SBIRS & 4 Classified Payloads, "Air Force Awards Launch Vehicle Development Contracts to Blue Origin Northrop Grummand ULA", "Pentagon picks SpaceX and ULA to remain its primary launch providers", "In a consequential decision, Air Force picks its rockets for mid-2020s launches", "Northrop Grumman to terminate OmegA rocket program", "Vulcan Centaur Rocket on Schedule for First Flight in 2021: ULA Submits Proposal for U.S. Air Force's Launch Services Competition", "Blue Origin files protest challenging 'flawed' Air Force strategy for choosing launches", https://en.wikipedia.org/w/index.php?title=National_Security_Space_Launch&oldid=1140354433, Space launch vehicles of the United States, Pages with non-numeric formatnum arguments, Short description is different from Wikidata, Articles containing potentially dated statements from November 2022, All articles containing potentially dated statements, Wikipedia articles in need of updating from June 2020, All Wikipedia articles in need of updating, All Wikipedia articles written in American English, Creative Commons Attribution-ShareAlike License 3.0. place critical United States Government assets and capabilities into space; augment space-based capabilities in a timely manner in the event of increased operational needs or minimize disruptions due to on-orbit satellite failures, launch failures, or deliberate actions against U.S. space assets; support government and commercial human space flight. 0000010608 00000 n
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19 0 obj 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. 3 August 2016. . O*?f`gC/O+FFGGz)~wgbk?J9mdwi?cOO?w| x&mf 97 0 obj 2023 Northrop Grumman. startxref 0000010105 00000 n
LV Mechanical Interface: The standard mounting pattern is a repeatable square grid pattern, independent of . [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. xXn8+84
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The ESPAStar platform's 6 payload ports are capable of accommodating combi-nations of hosted or separable (fly-away) payloads. SpaceX and ULA were the two vendors selected via the competition to supply launches to the US military in the 20222027 timeframe. Either a 4m or 5m fairing encapsulates the payload. The first Heavy vehicle (demo) was launched in December 2004. 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). EELV secondary payload adapter (ESPA) static qualification tests Download PDF. 120 0 obj 5 0 obj The payload interface at each port has been standardized, allowing for hosted and separable payload interchangeability, late payload integration and manifest changes. endstream
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Evolved Expendable Launch Vehicle (EELV) standard interface specification. ULA is expected to handle 60 percent of the launches while SpaceX will handle 40 percent of the launches over the five-year period. Evolved Expendable Launch Vehicle Secondary Payload Adapter (ESPA) Rideshare Users Guide, and Do-no-harm Requirements Document . %PDF-1.6
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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. Up to five solid rocket boosters can be added to augment performance. [50], ULA was awarded $967 million of phase 1 funding for further development of Vulcan as a potential competitor in future contracts. 0000001979 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. Download PDF. The purpose of this paper is to describe the development of the EELV Standard Interface Specification (SIS) and its implications for spacecraft designers. %PDF-1.4
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hbbd```b`` d#XD Opportunity which will utilize an Evolved Expendable Launch Vehicle (EELV) Secondary Payload Adapter (ESPA) or ESPA Grande. 15 0 obj Since 2019 there are four vehicles certified by the Department of Defense to conduct NSSL launches: Atlas V, Delta IV Heavy, Falcon 9 and Falcon Heavy. 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. 7 0 obj 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 EELV program is a funded U.S. Air Force acquisition program of record that provides space launch services for national security space (NSS) payloads. [35], A three-digit (XYZ) naming convention is used for the Atlas V configuration identification. endobj 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. [20], The USAF signed a contract at that time with SpaceX for two launches in 2014 and 2015 to serve as proving flights to support the certification process for the Falcon 9 v1.1 and Falcon Heavy. The FY 2016 NDAA recognized that a small number of Russian engines could be needed to ensure a near-term competitive environment. This website is best viewed in browsers such as: Edge, Firefox, Chrome, or Safari. Compliance with Standard Interface Specification (SIS) - Defines the standard interface between the payload and the launch system. [5] Delta IV Medium was retired in August 2019. 0000002177 00000 n
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hbbd```b`` d#XD The payload interface at each port has been standardized, allowing for hosted and separable payload inter-changeability, late payload integration, We encourage you to use one of these browsers for the best experience. ' 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]. 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. [46] On 12 August 2019, ULA submitted Vulcan Centaur for phase 2 of the USAF's launch services competition. %PDF-1.3 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. [39], GPS-IIIA USA-289 was the first NSSL-type B5 Falcon 9 launch. 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. endstream 4.0,`
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[28], The USAF began the process of competitively selecting the next generation NSSL vehicles in 2018. 1a-,,3o WYLd ,/HHVYNE^IUAQM]OGK\H[W&?'#/+/P3KrxTDl\BJX|jbRdtLQn~qIN^AvZizaFfVCYumUcEkSe}KysM]&On;,Z2}sl
+7^j[Xcm,?p._. Up to five solid rocket boosters can be added to augment performance. It uses 457,295 lbs (207,425 kg) of liquid oxygen and 169,008 lbs (76,660 kg) RP-1 rocket fuel propellants. - A final check of specifications will be conducted prior to launch. 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
[12] Boeing was awarded a contract for 19 out of the 28 launches; Lockheed Martin was awarded a contract for the other 9. The Pratt & Whitney Rocketdyne -built RS-68, a liquid hydrogen/liquid oxygen engine that produces 663,000 lbs of liftoff thrust, powers the first stage. % stream The ESPAStar platform leverages the available mass margin from any EELV launch to provide an affordable path to space for payloads. 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~ Evolved Expendable Launch Vehicle (EELV) standard interface specification, as well as Falcon 9 and Falcon Heavy. The Atlas V family uses a Russian RD-180 to power the first stage Common Core Booster. 13 0 obj Northrop Grummans ESPAStar platform provides a modular, cost-effective and highly capable infrastructure resource for hosting technology development and operational payloads. 0000004093 00000 n
[41] He clarified: "I certified them to compete last year" and "[o]ne of the requirements behind certification is to fly three missions." %%EOF
E6S2)212 "l+&Y4P%\%g|eTI (L 0_&l2E 9r9h xgIbifSb1+MxL0oE%YmhYh~S=zU&AYl/ $ZU m@O l^'lsk.+7o9V;?#I3eEKDd9i,UQ h6'~khu_ }9PIo= C#$n?z}[1 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. 0000082556 00000 n
Feature; Published: 28 November 2017; EELV secondary payload adapter (ESPA) static qualification tests. 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. [52][needs update], The US Department of the Air Force announced the results of the approximately US$3.5 billion National Security Space Launch Phase 2 Launch Service Procurement on 7 August 2020. VwSX$qjDMjdJpIo.|];"P+
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? APL requirements are not addressed in the SIS but their hs2z\nLA"Sdr%,lt Vehicles are defined by the number of solids and the width of the payload fairing. APL requirements are not addressed in the SIS but their Reducing the cost of launches and ensuring national access to space were the two main goals of the USAF space launch/EELV program. Delta IV Payload Planners Guide - October 1999 Accommodates combinations of hosted (6 max) or separable (12 max) payloads at all mounting ports, 1.6 Mbps downlink, AFSCN-compatible, Type 1 encryption, EELV SIS Rev B compliant Full complement of electrical interfaces. It uses 457,295 lbs (207,425 kg) of liquid oxygen and 169,008 lbs (76,660 kg) RP-1 rocket fuel propellants. 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. << /Type /Page /Parent 3 0 R /Resources 6 0 R /Contents 4 0 R /MediaBox [0 0 612 792] capability, a standard payload interface, support systems, mission integration (includes mission unique requirements), flight instrumentation and range interfaces, special studies, post-flight data . 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. @(l(MW a 67E1efWmh8s`e3XY|t+$8f`~!Af6 Dy3 If that was the case, then the Air Force will have developed a new family of launch vehicles that would be primarily used only for national security payloads, resulting in higher overhead costs to DoD, while missing an opportunity to maximize the competitive posture of US industry.
NASA Mission Specific ESPA SIS 4 LSP-REQ-317.01B Launch Services Program Program Level Dispenser and CubeSat
G. E. Sanford 1 & J. S. Welsh 2 . The intent was to replace legacy vehicles, including Delta II, Atlas II, and Titan IV. EELV SIS Evolved Expendable Launch Vehicle Standard Interface Specification . [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. The EELV program was initiated in 1994 and planned to be a "rolling-downselect" of launch vehicle providers from four to one. % ( (ZY
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[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]. EELVs were to reduce costs by being based on standardized fairings, liquid core vehicles, upper stages, and solid rocket boosters. Making space accessible. 1320 The Delta IV Medium, Medium-Plus and Heavy configurations are evolved from flight proven Delta II and Delta III systems while incorporating the latest technology into a family of vehicles maximizing the use of common hardware. In paying ULA for such fixed launch costs and executing the EELV program under a cost-plus contract, the DoD has reimbursed ULA for allowable, reasonable, and allocable costs for its launches, while requiring ULA to reimburse it on a per-launch basis for launches that ULA sells to its non-DoD customers. 0000003519 00000 n
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The Atlas V provides medium and intermediate lift capability and is evolved from flight-proven Atlas and Titan programs, maximizing flexibility and reliability. 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. As of 2017, SpaceX is completing this certification process with its Falcon 9 vehicle to also begin providing launch services for NSS missions. a new EELV acquisition strategy in November 2011, revising it in 2013. Evolved Expendable Launch Vehicle Rideshare User's Guide . Launch performance can be augmented by adding either two or four solid rocket motors. QUk{vv7m-C4W>!z~>X#Nz---1GjN. As of 2015 the EELV program was actively pursuing a competitive scenario for launch acquisitions, but the launch industry is currently undergoing numerous changes, and the makeup of the industry in the future is uncertain. This could include full development of a new launch system or modifications to an existing launch system, including launch infrastructure. endobj Thats Defining Possible. %%EOF
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As an example, an Atlas V 551 has a 5.4m payload fairing, 5 SRBs, and 1 RL-10.[35]. After a two-year solicitation and competition process in 20182020, in August 2020 the USSF selected SpaceX (F9 and FH) and ULA's yet-to-be-certified Vulcan Centaur to supply US military launch requirements in 20222027. EELV Standard Interface Specification - Version 6.0 2. 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). 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. [42] The USAF is working with SpaceX to mature their Falcon Heavy's design. mimics the EELV 157.5 cm (62.01 in) Standard Interface Plane. hb```B ;6hvfa. 0 EELV SIS Evolved Expendable Launch Vehicle Standard Interface Specification LSP-REQ-317.01B Launch Services Program (LSP) Program Level . endobj i`zN$KgyHDis+hj^@BV/C4v3bKAj. The EELV program is in the portfolio. 0000058694 00000 n
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. Blue Origin also filed a pre-award protest of the request for proposal arguing that the requirements were ambiguous. <<1FA29D3E1AADB2110A00D0FE946CFD7F>]/Prev 340978>> 2762 0 obj
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This document was developed by the NASA Science Mission Directorate (SMD). [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. stream A1vjp zN6p\W
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}hIY 7g8@/U}f9MHy^Z^~|^|TWmo<4c5UX|.Gqjs[6oc?y~x,D? [38] This launcher features a reusable first stage and fairings, which lowers the cost per mission. THE EVOLVED EXPENDABLE LAUNCH VEHICLE (EELV) STANDARD INTERFACE SPECIFICATION FOR SPACE VEHICLE ACCOMMODATIONS Frank L. Knight. xwTS7" %z ;HQIP&vDF)VdTG"cEb PQDEk 5Yg} PtX4X\XffGD=H.d,P&s"7C$ [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]. 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