Ark Evolved Mod
Kanisha Dezarn
The Evolved Expendable Launch Vehicle (EELV) program provides the United States affordable, reliable, and assured access to space with two families of launch vehicles: Atlas V and Delta IV. 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). 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. Of those 106 launches, 57 have been EELV National Security Space launches in support of the Navy, National Reconnaissance Office and the Space Force.
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). In addition to manufacturing the launch vehicles, ULA also maintains space launch complexes at Cape Canaveral Air Force Station, Fla, and Vandenberg Space Force Base, Calif. 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.
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. The EELV program was initiated in 1994 and planned to be a "rolling-downselect" of launch vehicle providers from four to one. 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. 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.
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. 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. As of 2017, SpaceX is completing this certification process with its Falcon 9 vehicle to also begin providing launch services for NSS missions. The primary goal remains 100% mission success while incentivizing cost reductions. Steady production rates, long-term commitments and opportunities for competition are among the means to achieve this goal.
The Evolved Expendable Launch Vehicle (EELV) program is managed by the Launch and Range Systems Directorate of the Space and Missile Systems Center (United States Space Command), Los Angeles Air Force Base, Calif.
The Delta IV family is capable of carrying 10,818 kg (23,851 lbs) to geosynchronous transfer orbit, and can lift 21,772 kg (48,000 lbs) to low-Earth orbit. 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.
The Medium & Medium-Plus vehicles use a single Common Booster Core (CBC), while the Heavy variant uses three CBCs. 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. Launch performance can be augmented by adding either two or four solid rocket motors. The second stage is powered by the RL-10B engine. Either a 4m or 5m fairing encapsulates the payload. Vehicles are defined by the number of solids and the width of the payload fairing.
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. The Atlas V provides medium and intermediate lift capability and is evolved from flight-proven Atlas and Titan programs, maximizing flexibility and reliability. 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.
The Atlas V family uses a Russian RD-180 to power the first stage Common Core Booster. It uses 457,295 lbs (207,425 kg) of liquid oxygen and 169,008 lbs (76,660 kg) RP-1 rocket fuel propellants. Up to five solid rocket boosters can be added to augment performance. The second stage (known as Centaur) is powered by the RL-10A engine. 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.
At Evolved, we collect and manage user data according to the following Privacy Policy, with the goal of incorporating our company values: transparency, accessibility, sanity, usability. This document is part of Evolved's Terms of Service, and by using evolved.com (the \u201CWebsite\u201D), you agree to the terms of this Privacy Policy and the Terms of Service. Please read the Terms of Service in their entirety, and refer to those for definitions and contacts.
We collect anonymous data from every visitor of the Website to monitor traffic and fix bugs. For example, we collect information like web requests, the data sent in response to such requests, the Internet Protocol address, the browser type, the browser language, and a timestamp for the request.
We ask you to log in and provide certain personal information (such as your name and email address) in order to be able to save your profile and the documents and comments associated with it. In order to enable these or any other login based features, we use cookies to store session information for your convenience. You can block or delete cookies and still be able to use Evolved, although if you do you will then be asked for your username and password every time you log in to the Website. In order to take advantage of certain features of the Website, you may also choose to provide us with other personal information, such as your picture or personal website, but your decision to utilize these features and provide such data will always be voluntary.
You are able to view, change and remove your data associated with your profile. Should you choose to delete your account, please contact us at sup...@evolvedmgmt.com and we will follow up with such request as soon as possible.
With respect to any documents you may choose to upload to Evolved, we take the privacy and confidentiality of such documents seriously. We encrypt all documents, and permanently delete any redacted edits you make to documents. If you choose to make a document public, we recommend you redact any and all references to people and addresses, as we can't protect public data and we are not responsible for any violation of privacy law you may be liable for.
Evolved may contact you, by email or other means. For example, Evolved may send you promotional emails relating to Evolved or other third parties Evolved feels you would be interested in, or communicate with you about your use of the Evolved website. Evolved may also use technology to alert us via a confirmation email when you open an email from us. You can modify your email notification preferences by clicking the appropriate link included in the footer of email notifications. If you do not want to receive email from Evolved, please opt out of receiving emails at the bottom of any Evolved emails or by editing your profile preferences.
We don't share your personal information with third parties. Only aggregated, anonymized data is periodically transmitted to external services to help us improve the Evolved Website and service. We currently use Google Analytics (traffic analysis, SEO optimization), Mailchimp (mailing list management). We listed below what data these third parties extract exactly. Feel free to check out their own Privacy Policies to find out more.
We also use social buttons provided by services like Twitter, Google+, LinkedIn and Facebook. Your use of these third-party services is entirely optional. We are not responsible for the privacy policies and/or practices of these third party services, and you are responsible for reading and understanding those third party services\u2019 privacy policies.
We employ and contract with people and other entities that perform certain tasks on our behalf and who are under our control (our \u201CAgents\u201D). We may need to share personal information with our Agents in order to provide products or services to you. Unless we tell you differently, our Agents do not have any right to use Personal Information or other information we share with them beyond what is necessary to assist us. You hereby consent to our sharing of Personal Information with our Agents.
We may choose to buy or sell assets. In these types of transactions, user information is typically one of the transferred business assets. Moreover, if we, or substantially all of our assets, were acquired, or if we go out of business or enter bankruptcy, user information would be one of the assets that is transferred or acquired by a third party. You acknowledge that such transfers may occur and that any acquirer of us or our assets may continue to use your personal information as set forth in this policy.
We may amend this Privacy Policy from time to time. Use of information we collect now is subject to the Privacy Policy in effect at the time such information is used. If we make major changes in the way we collect or use information, we will notify you by posting an announcement on the Website or sending you an email. In any case, you can track all changes via the TOS Tracker. A user is bound by any changes to the Privacy Policy when he or she uses the Services after such changes have been first posted.
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