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We encourage you to use one of these browsers for the best experience. Search 209,668,378 papers from all fields of science . "=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 US Space Force (USSF) plans 3034 launches during these five fiscal years. 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. % 0
Abstract. 2612 [36] As of 10November2022[update], 19 launches remain. Standard payload interfaces were touted as another way to save money and improve efficiency, though success in that area remained to be seen. As of 2019, these launch vehicles were the primary methods for launching U.S. military satellites, along with the Falcon 9 developed by SpaceX. These load factors, as shown in Table 1, represent a set of accelerations that Announced performance requirements include:[29][30]. 0000004305 00000 n
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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. [16] Each company has a 50% stake in ULA. The USAF began the EELV program in 1994, following many years of government-funded studies into improved systems and architecture. O*?f`gC/O+FFGGz)~wgbk?J9mdwi?cOO?w| x&mf [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. The platform is optimized for GEO missions, but is adaptable for LEO and MEO missions. 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 xkqW@F%N(ISI>bUqE-9? U~2=s?/*Vni{w}]V_(?OnSy7W7e/Myug p=gOnJZ~
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[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. [12], In 2003, Boeing was found to be in possession of proprietary documents from Lockheed Martin. xKo6L"%>4m[=!zn-K3Pgfowgu>?me|W63ov,Eno:lcu,7s9c_I1&/{v<3eR|xRwqh0UK 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. 0000006880 00000 n
[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. [12] Boeing was awarded a contract for 19 out of the 28 launches; Lockheed Martin was awarded a contract for the other 9. -2- In 1998, when it appeared the growth in the commercial satellite industry would be able to sustain two providers of launch services, the Air Force decided to award contracts to both Boeing and Lockheed Martin for their respective launch capabilities. <>stream
[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]. 0000058694 00000 n
4 The NSSL system includes launch vehicles, launch capability, a standard payload interface, support systems, mission integration (includes mission unique requirements), flight instrumentation and range interfaces . << /Length 5 0 R /Filter /FlateDecode >> New ICD Revisions in Development 8/22/2022: UPREVISIONS RELEASED [7A\SwBOK/X/_Q>QG[ `Aaac#*Z;8cq>[&IIMST`kh&45YYF9=X_,,S-,Y)YXmk]c}jc-v};]N"&1=xtv(}'{'IY)
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[32] The DCSS had 4m diameter and 5m diameter versions, with matching diameter payload fairings. As an example, an Atlas V 551 has a 5.4m payload fairing, 5 SRBs, and 1 RL-10.[35]. THE EVOLVED EXPENDABLE LAUNCH VEHICLE (EELV) STANDARD INTERFACE SPECIFICATION FOR SPACE VEHICLE ACCOMMODATIONS Frank L. Knight. [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 EELV SIS Evolved Expendable Launch Vehicle Standard Interface Specification . 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 endobj 0000003406 00000 n
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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. The second stage (known as Centaur) is powered by the RL-10A engine. 0000000016 00000 n
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9WTsD. At the same time, another 14 boosters were to be procured competitively beginning in 2015, with the initial launches to be performed in 2017. Launch Systems Enterprise Directorate (SMC/LE) 483 N. Aviation Blvd. 4 0 obj %PDF-1.3 0000003719 00000 n
97 0 obj Feature; Published: 28 November 2017; EELV secondary payload adapter (ESPA) static qualification tests. The ESPAStar platform leverages the available mass margin from any EELV launch to provide an affordable path to space for payloads. [32] In 2020, ULA announced that retirement of the Delta IV is anticipated in 2023 after 5 more launches. 0000006374 00000 n
The Atlas V family uses a Russian RD-180 to power the first stage Common Core Booster. 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. 0000015937 00000 n
[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. The FY 2016 NDAA recognized that a small number of Russian engines could be needed to ensure a near-term competitive environment. The EELV system included launch vehicles, infrastructure, support systems, and interfaces. 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. %PDF-1.3 The approach continues procurement of launch services and launch capability from ULA for the next several years but provides for a full and open competitive environment for any alternative sources as soon as they are certified. This website is best viewed in browsers such as: Edge, Firefox, Chrome, or Safari. FV>2 u/_$\BCv< 5]s.,4&yUx~xw-bEDCHGKwFGEGME{EEKX,YFZ ={$vrK 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. hb```B ;6hvfa. The USAF and United States Space Force (USSF) plan to use the next generation NSSL launch vehicles until at least 2030.[31]. << /ProcSet [ /PDF /Text ] /ColorSpace << /Cs1 7 0 R >> /Font << /TT2 9 0 R 31-03-2017 19:36:21 ZULU, Evolved Expendable Launch Vehicle (EELV) Launch Service Agreements (LSA) Draft Request for Proposal (RFP). The second stage (known as Centaur) is powered by the RL-10A engine. 0000010525 00000 n
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[11], In October 1998 two initial launch services contracts (known as Buy 1) were awarded. F#
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6~5Y|fro xA7AmGxnqt_,MmOw0Uvdj t!:$`v0m5c The procedure and process for development, control, and maintenance is the same for ICDs and ISs. endobj [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. ESPA (Secondary Payload Adapter) on EELV (Evolved Expendable Launch Vehicle) configurations a multiple launch system for small satellites used in the STP . One of the Air Forces long-term goals for the EELV program is to have at least two certified launch providers able to compete for the full range of national security launches. Attachment 6 Evaluation Criteria. DHh0D@z5+?w
An Atlas V XYZ will have a 4.2-or-5.4-meter (14 or 18ft) diameter payload fairing, Y solid rocket boosters (0-5), and Z RL-10's on the Centaur upper stage (1-2). 0000101481 00000 n
A Standard Payload Interface bus was also proposed as a way to save money and improve efficiency. 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. endstream
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Evolved Expendable Launch Vehicle Rideshare User's Guide . 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 . [35], A three-digit (XYZ) naming convention is used for the Atlas V configuration identification. 0000000016 00000 n
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The payload interface at each port has been standardized, allowing for hosted and separable payload inter-changeability, late payload integration, 15 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. [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. 1a-,,3o WYLd ,/HHVYNE^IUAQM]OGK\H[W&?'#/+/P3KrxTDl\BJX|jbRdtLQn~qIN^AvZizaFfVCYumUcEkSe}KysM]&On;,Z2}sl
+7^j[Xcm,?p._. The ESPAStar platform leverages the available mass margin from any EELV launch to provide an affordable path to space for payloads. << /Type /Page /Parent 3 0 R /Resources 6 0 R /Contents 4 0 R /MediaBox [0 0 612 792] 0000017080 00000 n
Download PDF. endstream
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[39], GPS-IIIA USA-289 was the first NSSL-type B5 Falcon 9 launch. 0000017011 00000 n
. Development is defined as all activities from initial concept up to, but not including, production. CX' )3~~0Q I3W
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@(l(MW a 67E1efWmh8s`e3XY|t+$8f`~!Af6 Dy3 hb```|+a1b0K5IiJs!C}D&m%[Xuddtu p|6:O3|3v)-F'M1*vm^b1:JeSzr60v0ht00t@0Gb0$cDHG Abt:2{$8naMeJC1kYDHn)_2u hH1=l [52][needs update], The US Department of the Air Force announced the results of the approximately US$3.5 billion National Security Space Launch Phase 2 Launch Service Procurement on 7 August 2020. hbbd```b`` D:H3YH22H5,)qS =A&]8 I
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Steady production rates, long-term commitments and opportunities for competition are among the means to achieve this goal. RFP F04701-97-R-0008 19 June 1998 ii . The purpose of this paper is to describe the development of the EELV Standard Interface Specification (SIS) and its implications for spacecraft designers. A new EELV Acquisition Strategy was approved in November 2011 which recognizes only the Atlas V and Delta IV can currently provide reliable launch services to meet NSS requirements but also seeks to take advantage of the growing potential of additional commercial space launch providers. [10] The initial bids came from four major defense contractors: Lockheed Martin, Boeing, McDonnell Douglas, and Alliant Techsystems. ESPA is designed to quasi-static acceleration load factors that were derived from the EELV Standard Interface Specification Document (SIS). trailer . The Governments objectives were to develop Payload Category A, B, and C launch system prototypes, through shared investment with industry partners that will lead to EELV certified launch systems capable of providing launch services for all EELV-class National Security Space (NSS) missions. Vehicles are defined by the number of solids and the width of the payload fairing. RFP F04701-97-R-0008 19 June 1998 ii 0 stream 0000082556 00000 n
With multiple launch vehicle configurations and launch sites on both coasts of the U.S., EELV has a proven track record of success, demonstrating unprecedented reliability with 106 successful launches since 2002. Thats Defining Possible. Photo Credit: U.S. Space Force. {!Kd#5:#[T$FhTs;*(Ai((4N|radRbt!BHx2eq(*xiTxa$m|+Id99uLA@(C!#Oro;{N4"#. 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. 3 August 2016. . This document was produced and is maintained by the Evolved Expendable Launch Vehicle Boeing received $1.38 billion, and Lockheed Martin received $650 million for the launches. Along with the award of two development agreements, the total amount was more than $3 billion. Either a 4m or 5m fairing encapsulates the payload. DHh0D@z5+?w
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pG@ EELV secondary payload adapter (ESPA) static qualification tests Download PDF. 12 0 obj 0000006428 00000 n
[13] Boeing and Lockheed Martin were each awarded US$500 million for the final phase of the bid. The interface includes mechanical, 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. 2762 0 obj
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EELVs were to reduce costs by being based on standardized fairings, liquid core vehicles, upper stages, and solid rocket boosters. 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. Delta IV's inaugural flight was marked by the successful launch of a commercial satellite on a Medium-Plus (4,2) in November 2002. As of that time, Vulcan Centaur was on track for a 2021 launch. 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). Xyz ) naming convention is used for the Atlas V configuration identification provide an affordable path to space for.! As of 10November2022 [ update ], in 2003, Boeing, McDonnell Douglas, and Alliant.. ] OGK\H [ W & ) is powered by the number of solids the. 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