Flight 11P of

SpaceShipOne SpaceShipOne is an experimental air-launched rocket-powered aircraft with sub-orbital spaceflight capability at speeds of up to 3,000 ft/s (900 m/s, 3240 km/h), using a hybrid rocket motor. The design features a unique "feathering" a ...

was its eighth independent flight, its first powered flight, and the first privately funded crewed flight to reach

supersonic Supersonic speed is the speed of an object that exceeds the speed of sound ( Mach 1). For objects traveling in dry air of a temperature of 20 °C (68 °F) at sea level, this speed is approximately . Speeds greater than five times ...

speeds. It occurred on December 17, 2003. The date of the test flight was 100 years to the day since the Wright Brothers made the first powered flight. It followed several months of glide tests. The

pilot An aircraft pilot or aviator is a person who controls the flight of an aircraft by operating its directional flight controls. Some other aircrew members, such as navigators or flight engineers, are also considered aviators, because they a ...

was

Brian Binnie William Brian Binnie (April 26, 1953 – September 15, 2022) was a United States Navy officer and one of the test pilots for SpaceShipOne, the experimental spaceplane developed by Scaled Composites and flown from 2003 to 2004. Early life Bin ...

Details

White Knight,

ed by

Peter Siebold Peter Siebold (born 1971) is a member of the Scaled Composites astronaut team. He is their Director of Flight Operations, and was one of the test pilots for SpaceShipOne and SpaceShipTwo, the experimental spaceplanes developed by the company. On ...

, carried SpaceShipOne to launch altitude. At 08:15 PDT at an altitude of 47,900 feet (14.6 km) and a speed of 112

knot A knot is an intentional complication in cordage which may be practical or decorative, or both. Practical knots are classified by function, including hitches, bends, loop knots, and splices: a ''hitch'' fastens a rope to another object; a ' ...

s (58 m/s), SpaceShipOne was released from White Knight. After gliding to 44,400 feet (13.5 km) and accelerating to Mach 0.55, the rocket was lit for a 15

second The second (symbol: s) is the unit of time in the International System of Units (SI), historically defined as of a day – this factor derived from the division of the day first into 24 hours, then to 60 minutes and finally to 60 seconds ...

burn. 9 seconds into the burn, SpaceShipOne exceeded the speed of sound. The craft climbed at a 70 degree angle, accelerating at 3 ''g'' (30 m/s²). At burn-out the Mach number was 1.2. The craft coasted to an

apogee An apsis (; ) is the farthest or nearest point in the orbit of a planetary body about its primary body. For example, the apsides of the Earth are called the aphelion and perihelion. General description There are two apsides in any ellip ...

altitude of 67,800 feet (20.7 km). The craft was reconfigured into high-drag ("feathered") mode to begin descent. After about a minute of descent, it switched to glider configuration at 35,000 feet (10.7 km). It then glided for 12 minutes back to

Mojave Airport The Mojave Air and Space Port at Rutan Field is in Mojave, California, United States, at an elevation of . It is the first facility to be licensed in the United States for horizontal launches of reusable spacecraft, being certified as a sp ...

. During landing a

roll Roll or Rolls may refer to: Movement about the longitudinal axis * Roll angle (or roll rotation), one of the 3 angular degrees of freedom of any stiff body (for example a vehicle), describing motion about the longitudinal axis ** Roll (aviation), ...

oscillation caused the left main gear to collapse. The craft made a

runway excursion A runway excursion is a runway safety incident where an aircraft makes an inappropriate exit from the runway. Runway excursions include runway overruns, where an aircraft is unable to stop before it reaches the end of the runway. Runway excursio ...

rolling to a stop in soft sand. The craft sustained minor damage, later repaired, and the pilot was uninjured.

References

External links

Scaled Composites' public flight logSpaceShipOne breaks the sound barrier
—

press release A press release is an official statement delivered to members of the news media for the purpose of providing information, creating an official statement, or making an announcement directed for public release. Press releases are also considere ...

from

Scaled Composites Scaled Composites (often called simply Scaled) is an American aerospace company founded by Burt Rutan and currently owned by Northrop Grumman. It is located at the Mojave Air and Space Port in Mojave, California, United States. Founded to develo ...

{{Scaled Composites SpaceShipOne Scaled Composites Tier One program 2003 in spaceflight