Kistler Aerospace and Lockheed Martin siad Wednesday that fuel tank testing had check out successfully, completing another major milestone toward Kistler's mission of providing the world's first reusable launch vehicle – the Kistler K-1.

Designed and tested by Lockheed Martin's Michoud Space Systems

division, the hydrostatic proof testing of the K-1 liquid oxygen tank

was conducted to simulate the pressures the tank will experience

during flight.

“This is an exciting time for us,'' said Robert Wang, chairman of

Kistler Aerospace. “With the help of outstanding contractors like

Lockheed Martin, we continue to move through major milestones, like

the one today, with great results. Lockheed Martin's experience with

Space Shuttle external tanks and X-33 liquid oxygen tanks gave us

every reason to believe the K-1 tank design would be successful.''

The aluminum fuel tank, which will contain liquid oxygen to be

used during first stage boost, was filled with approximately 33,600

gallons of water to resemble flight pressures and prove flight

worthiness. During the proof test procedure, a maximum pressure of 44

pounds per square inch was generated hydrostatically at the rear of

the liquid oxygen tank.

Following non-destructive evaluation of the tank, Lockheed Martin

technicians will complete final installations and cleaning to prepare

the component for installation in the K-1 launch vehicle. Final

assembly will take place at the NASA Michoud Assembly Facility in New

Orleans.

Kistler Aerospace is the leading developer of the K-1 fully

reusable aerospace vehicle, designed to deliver satellites to

low-Earth orbit and provide a low-cost alternative to single-use

launch vehicles. Kistler is a privately-funded U.S. company with

corporate offices in Kirkland, Wash. and executive offices in Los

Angeles.