NASA TESTS ORION PARACHUTES

The following excerpt is from the NASA website:

“NASA CONTINUES ORION PARACHUTE TESTING FOR ORBITAL TEST FLIGHT
HOUSTON --
On Feb. 29, NASA successfully conducted another drop test
of the Orion crew vehicle's entry, descent and landing parachutes
high above the Arizona desert in preparation for the vehicle's
orbital flight test in 2014. Orion will carry astronauts deeper into
space than ever before, provide emergency abort capability, sustain
the crew during space travel and ensure a safe re-entry and landing.

An Air Force C-17 plane dropped a test version of Orion from an
altitude of 25,000 feet above the U.S. Army's Yuma Proving Grounds in
Arizona. Orion's drogue chutes were deployed between 15,000 and
20,000 feet, followed by the pilot parachutes, which deployed the
main landing parachutes. Orion landed on the desert floor at a speed
of almost 17 mph, well below the maximum designed touchdown speed of
the spacecraft.

The test examined how Orion's wake, the disturbance of the air flow
behind the vehicle, would affect the performance of the parachute
system. Parachutes perform optimally in smooth air that allows proper
lift. A wake of choppy air can reduce parachute inflation. The test
was the first to create a wake mimicking the full-size Orion vehicle
and complete system.

Since 2007, the Orion program has conducted a vigorous parachute air
and ground test program and provided the chutes for NASA’s successful
pad abort test in 2010. All of the tests build an understanding of
the chutes’ technical performance for eventual human-rated
Certification.”