Advanced Materials & Processes

FEB 2015

Covers developments in engineering materials selection, processing, fabrication, testing/characterization, materials engineering trends, and emerging technologies, industrial and consumer applications, as well as business and management trends

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above the Earth's surface. This generated a re-entry velocity exceeding 20,000 mph. For extra strength and stiffness, the heat shield features a titanium backbone structure enabling Orion to withstand landing loads of 300,000-400,000 lb. The December flight tested all of Orion's re-entry systems—in- cluding testing the heat shield, jettisoning the forward bay cover, and deploying parachutes—and gauged the effective- ness of the software driving numerous functions across mul- tiple systems. Data collected from Exploration Flight Test-1 provides engineers with information about fluctuations between the temperatures and pressures across the heat shield during re-entry, Avcoat performance, and accelerations and strain during splashdown. Even with deployment of 11 parachutes to help slow the spacecraft to a safe splashdown, the heat shield must protect the crew and capsule from landing loads and turbulent sea conditions, which could vary significantly during different mis- sions. Comprehensive test flight data, including information about the heat shield, will guide design decisions most critical to crew safety, ultimately lowering risks and costs for future space missions. For more information: Allison Rakes is Orion public relations oficer, Lockheed Martin Space Systems Co., 6801 Rockledge Dr., Bethesda, MD 20817-1803, 303.977.7135,, Fig. 3 — The Orion Multi-Purpose Crew Vehicle is intended to carry a crew of up to four astronauts to destinations at or beyond low Earth orbit. Fig. 4 — During re-entry into Earth's atmosphere, the Orion heat shield protected the vehicle from external temperatures of 4000°F. i T S S e | a d v a n c e d m a t e r i a l s & p r o c e s s e s | F e B r U a r Y 2 0 1 5 1 2 iTSSe | TSS

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