[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. endobj 0000068253 00000 n
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. @(l(MW a 67E1efWmh8s`e3XY|t+$8f`~!Af6 Dy3 The EELV program's Delta IV and Atlas V launch vehicles are produced by United Launch Alliance (a joint venture of Boeing and Lockheed Martin formed in 2006). Development is defined as all activities from initial concept up to, but not including, production. This could include full development of a new launch system or modifications to an existing launch system, including launch infrastructure. 0000000016 00000 n
[35], A three-digit (XYZ) naming convention is used for the Atlas V configuration identification. Boeing initially proposed using the RS-25 Space Shuttle main engine. wc/CR6@Vf|N`ObN#C8\'08#9MVk-v^.O@G}&(U! AGR-aH2\p|)+h 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. endobj 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). 0000006880 00000 n
Evolved Expendable Launch Vehicle (EELV) Phase 1A Competitive Acquisition . [16] Each company has a 50% stake in ULA. ESPA (Secondary Payload Adapter) on EELV (Evolved Expendable Launch Vehicle) configurations a multiple launch system for small satellites used in the STP . % 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. 21 0 obj Blue Origin was awarded $500 million of phase 1 funding for further development of New Glenn as a potential competitor in future contracts. Blue Origin also filed a pre-award protest of the request for proposal arguing that the requirements were ambiguous. Boeing developed the Delta IV based around Common Booster Cores and the Delta Cryogenic Second Stage, while Lockheed Martin developed the Atlas V based around Common Core Boosters and the Centaur upper stage. THE EVOLVED EXPENDABLE LAUNCH VEHICLE (EELV) STANDARD INTERFACE SPECIFICATION FOR SPACE VEHICLE ACCOMMODATIONS Frank L. Knight. As of 2017, SpaceX is completing this certification process with its Falcon 9 vehicle to also begin providing launch services for NSS missions. ;mnf4fb3/!s}Wz#I/MeFg_$ob$bOR JDs5~7^U.BV*p3]2j,BBR3Pq2,LnVL{gLj}U;g;bqGQY7C85V7y3fi=fp"n0+ddobk hb``g``f`f`. APL requirements are not addressed in the SIS but their capability, a standard payload interface, support systems, mission integration (includes mission unique requirements), flight instrumentation and range interfaces, special studies, post-flight data . >> 0000001361 00000 n
Announced performance requirements include:[29][30]. At the same time, another 14 boosters were to be procured competitively beginning in 2015, with the initial launches to be performed in 2017. xkqW@F%N(ISI>bUqE-9? U~2=s?/*Vni{w}]V_(?OnSy7W7e/Myug p=gOnJZ~
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xlvB^F,d` 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. %PDF-1.3 0000005030 00000 n
Delta IV Medium flew with two or four SRBs on a single Common Booster Core. 4.0,`
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[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. 2774 0 obj
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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. NASA Mission Specific ESPA SIS 4 LSP-REQ-317.01B Launch Services Program Program Level Dispenser and CubeSat 0000101481 00000 n
27 33
[28], The USAF began the process of competitively selecting the next generation NSSL vehicles in 2018. 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). %%EOF
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. On this Wikipedia the language links are at the top of the page across from the article title. 0000006582 00000 n
The payload interface at each port has been 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 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. 0000461158 00000 n
<< /Length 19 0 R /N 3 /Alternate /DeviceRGB /Filter /FlateDecode >> 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. "=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! 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. This document was developed by the NASA Science Mission Directorate (SMD). RFP F04701-97-R-0008 19 June 1998 ii This page intentionally left blank. [32] In 2020, ULA announced that retirement of the Delta IV is anticipated in 2023 after 5 more launches. SpaceX and ULA were the two vendors selected via the competition to supply launches to the US military in the 20222027 timeframe. 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. [47] In 2020, Northrop Grumman announced the cancellation of OmegA. <> 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 . 0000135929 00000 n
0000058694 00000 n
stream The strategy invests in new and/or upgraded commercial launch solutions that also meet National Security Space (NSS) requirements. endstream
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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. Thats Defining Possible. [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]. hbbd```b`` d#XD 0000017080 00000 n
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. endobj 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. EELV STANDARD INTERFACE SPECIFICATION VERSION 5.0. [ /ICCBased 18 0 R ] 0000082556 00000 n
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. x[n$
}hIY 7g8@/U}f9MHy^Z^~|^|TWmo<4c5UX|.Gqjs[6oc?y~x,D? 0000001790 00000 n
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). %PDF-1.7
%
@(l(MW a 67E1efWmh8s`e3XY|t+$8f`~!Af6 Dy3 endobj 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 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. 2784 0 obj
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The EELV program is in the portfolio. stream 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. As of 2019, the first flight has been stated by NGIS to be expected in 2021. 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. [38] This launcher features a reusable first stage and fairings, which lowers the cost per mission. endobj The EELV system included launch vehicles, infrastructure, support systems, and interfaces. The Atlas V family uses a Russian RD-180 to power the first stage Common Core Booster. The USAF began the EELV program in 1994, following many years of government-funded studies into improved systems and architecture. hb```|+a1b0K5IiJs!C}D&m%[Xuddtu p|6:O3|3v)-F'M1*vm^b1:JeSzr60v0ht00t@0Gb0$cDHG Abt:2{$8naMeJC1kYDHn)_2u hH1=l startxref Search 209,668,378 papers from all fields of science . /TT4 11 0 R >> >> 0
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