mardi 24 mai 2011

NASA Announces Key Decision For Next Deep Space Transportation System












NASA logo / Multi-Purpose Crew Vehicle (MPCV) logo.

May 24, 2011

NASA has reached an important milestone for the next U.S. transportation system that will carry humans into deep space. NASA Administrator Charles Bolden announced today that the system will be based on designs originally planned for the Orion Crew Exploration Vehicle. Those plans now will be used to develop a new spacecraft known as the Multi-Purpose Crew Vehicle (MPCV).

Artist's rendering of the Multi-Purpose Crew Vehicle on a deep space mission. Image credit: NASA

"We are committed to human exploration beyond low-Earth orbit and look forward to developing the next generation of systems to take us there," Bolden said. "The NASA Authorization Act lays out a clear path forward for us by handing off transportation to the International Space Station to our private sector partners, so we can focus on deep space exploration. As we aggressively continue our work on a heavy lift launch vehicle, we are moving forward with an existing contract to keep development of our new crew vehicle on track."

Lockheed Martin Corp. will continue working to develop the MPCV. The spacecraft will carry four astronauts for 21-day missions and be able to land in the Pacific Ocean off the California coast. The spacecraft will have a pressurized volume of 690 cubic feet, with 316 cubic feet of habitable space. It is designed to be 10 times safer during ascent and entry than its predecessor, the space shuttle.

"This selection does not indicate a business as usual mentality for NASA programs," said Douglas Cooke, associate administrator for the agency's Exploration Systems Mission Directorate in Washington. "The Orion government and industry team has shown exceptional creativity in finding ways to keep costs down through management techniques, technical solutions and innovation."

Built On A Solid Foundation

Timeline for development of the Multi-Purpose Crew Vehicle. Image credit: NASA

Designating Orion as NASA's Multi-Purpose Crew Vehicle provides our nation with an affordable solution for multiple mission capability by continuing the technology innovations and spacecraft development the NASA-industry team has accomplished.

By designing for challenging deep space missions, the MPCV/Orion team has already passed rigorous human rating reviews and other critical milestones required for safe, successful human space flight. With a proven launch abort system and its inherent design to provide the highest level of safety for the crew during long-duration missions, the MPCV is poised to take on increasingly challenging missions that will take human space exploration beyond low Earth orbit and out into the cosmos.

To learn more about the development of the MPCV, visit: http://www.nasa.gov/exploration/systems/mpcv

About the Multi-Purpose Crew Vehicle (MPCV)

The Multi-Purpose Crew Vehicle (MCPV) is based on the Orion design requirements for traveling beyond Low Earth Orbit (LEO). The MPCV will serve as the exploration vehicle that will carry the crew to space, provide emergency abort capability, sustain the crew during the space travel, and provide safe re-entry from deep space return velocities.


Image above: The Multi-Purpose Crew Vehicle being assembled and tested at Lockheed Martin's Vertical Testing Facility in Colorado. (Photo credit: Lockheed Martin).

    - Spacecraft to serve as the primary crew vehicle for missions beyond LEO

    - Capable of conducting regular in-space operations (rendezvous, docking, extravehicular activity) in conjunction with payloads delivered by SLS for missions beyond LEO

    - Capability to be a backup system for ISS cargo and crew delivery

Explore the Exploration Vehicle

 Cutaway view of the Multi Purpose Crew Vehicle. Image credit: NASA

Launch Abort System

The launch abort system (LAS), positioned on a tower atop the crew module, activates within milliseconds to propel the crew module to safety in the event of an emergency during launch or climb to orbit. The system also protects the crew module from dangerous atmospheric loads and heating, then jettisons after the Multi Purpose Crew Vehicle (MPCV) is through the initial mission phase of ascent to orbit.

Crew Module

The crew module is the transportation capsule that provides a safe habitat for the crew, provides storage for consumables and research instruments, and serves as the docking port for crew transfers. The crew module is the only part of the MPCV that returns to Earth after each mission.

Service Module

The service module supports the crew module from launch through separation prior to reentry. It provides in-space propulsion capability for orbital transfer, attitude control, and high altitude ascent aborts. When mated with the crew module, it provides the water, oxygen and nitrogen needed for a habitable environment, generates and stores electrical power while on-orbit, and maintains the temperature of the vehicle's systems and components.

A New Era of Space Exploration

This module can also transport unpressurized cargo and scientific payloads.

More information about Orion, visit: http://www.nasa.gov/mission_pages/constellation/orion/index.html

Images (mentioned), Video, Text, Credits: NASA / Lockheed Martin.

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