• Restoration Center, Everett

Restoration Center, Everett

Boeing Inertial Upper Stage Mock-up
Restoration Center, Everett
Yes

The Boeing-developed Inertial Upper Stage (IUS), an unpiloted, upper-stage booster rocket, can be launched from Titan IV expendable launch vehicles or the space shuttle.

In 1988, the IUS sent the Magellan spacecraft to Venus. In 1990, it sent the Galileo to Jupiter and the Ulysses to the sun. On August 6, 2001, an IUS successfully deployed a Defense Support Program satellite for the U.S. Air Force from Cape Canaveral Air Force Station, Florida.

A typical Boeing IUS mission launched from a Titan IVB involves IUS separation from the rocket's second-stage booster approximately nine minutes into flight. The IUS takes over responsibility for the remainder of the powered portion of the flight. For the next six hours and 54 minutes, the IUS autonomously performs all functions to place the spacecraft into its proper orbit, some 22,000 miles above the Earth. The first IUS rocket burn occurs a little over one hour into the IUS booster flight. The IUS second solid rocket motor ignites about six-and-a-half hours into the flight, followed by a coast phase, and then, separation of the spacecraft.

The Boeing Inertial Upper Stage was launched on its final mission, February 14, 2004, when it successfully deployed a U.S. Air Force Defense Support Program (DSP) satellite. The IUS-10 and its integrated payload, DSP-22, were launched aboard a Titan IVB rocket, which also flew with a Boeing-made fairing. Liftoff occurred from Space Launch Complex 40 at Cape Canaveral Air Force Station.

Upon separation from the rocket, IUS-10 fired its two stages to propel the spacecraft toward its geosynchronous orbit. Following roll maneuvers, the IUS successfully deployed the spacecraft. "This last IUS mission added a critical asset to our nation's military space program with the successful launch of DSP-22," said Bill Benshoof, Boeing IUS program manager. "The flight of IUS-10 concludes a 22-year journey for one of the most successful upper stages ever built and flown."

Source: The Boeing Company

This spacecraft was donated by The Boeing Company.

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The Navy was pleased with the Pratt and Whitney J57-P-11-powered Crusader from the start. The Museum's Crusader is the prototype airplane, BuNo 138899. After being completed at the Vought factory near Dallas, it was trucked to Edwards Air Force Base where it made its first flight on March 25, 1955. Test pilot John Konrad took the airplane supersonic on this flight, the first time it had ever been done with any fighter on its maiden flight.

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