March 8, 2005
The Civilian Space eXploration Team’s GoFast rocket reached
an official altitude of 72 miles, making it the first Civilian
and Amateur rocket to successfully exceed the 62 mile (100km)
international definition of space. Launched on May 17th 2004 at
the Black Rock Desert in Nevada at 11:12 am, the GoFast rocket
officially entered space at 11:13:41 am PDT 101 seconds into flight.
The maximum altitude was determined by flight reconstruction from
data measurements stored on two redundant on-board flight recorders.
The official altitude of 72 miles was derived from a high precision
3-axis accelerometer (Crossbow, CXL25LP3) and 3-axis magnetometer
(Crossbow, CXM113). Two back-up accelerometers provided additional
sources confirming the vehicle exceeded 62 miles.
liftoff the motor produced 16,000 lbs of thrust and cleared the
launch tower accelerating at over 23 g’s. After tower clear
and a predicted wind induced yaw maneuver, the vehicle flight
performance was nominal and on a nearly straight trajectory as
recorded by the onboard magnetometer. At 10.5 seconds into the
flight and with the motor still burning and producing 1,500 lbs
of thrust the vehicle hit a top speed of 3,420 mph and just over
Mach 5 setting a new amateur speed record. Motor burnout was nominal
at 13.4 seconds at an altitude of 49,000 feet with the rocket
plume exhaust still visible by ground observers. The canted fins
produced a burnout spin rate of 8 revolutions per second and put
the rocket on a straight trajectory towards space.
GoFast Rocket Launched Into Space May 17th 2004
At 158 seconds from liftoff the rocket reached
a maximum altitude of 379,900 feet (115.8 km or 72 miles) and
began its weightless decent back towards earth. At 240 seconds
and still over 250,000 feet in altitude the primary onboard computer
sent a signal to the separation system that immediately separated
the payload with the flight recorders from the booster section.
Both parachutes, one on the booster and the other on the payload
section deployed nominally. Decelerating at a peak of 5.5 g’s
at 160,000 feet both objects became subsonic at approximately
110,000 ft where both parachutes were fully deployed. At 850 seconds
the payload section impacted on the side of a mountain at 62 mph
nose first 20 miles from the launch site. During the booster’s
decent at approximately 50,000 ft the recovery system malfunctioned
for unknown reasons sending the 211 pound inert booster nose first,
impacting the ground at a terminal velocity of 511 mph.
GoFast Payload and Flight Recorders Recovered May 18th 2004
The Federal Aviation Administration’s Office
of Space Transportation AST-200 Licensing and Safety Division
conducted an extensive analysis of the recovered flight data and
provided CSXT with this statement on February 28, 2005:
“On Monday, 17 May 2004, the Civilian
Space Exploration Team (CSXT) launched the GoFast rocket at 11:12
am PDT from the Black Rock Desert. The GoFast rocket was an amateur
rocket and therefore did not require a license to launch. However,
a waiver to enter national airspace was required and was granted.
Two FAA/AST safety inspectors were present for this launch to
ensure that conditions of the waiver were met. While AST did not
independently verify the maximum altitude attained by the rocket
(as tracking radar was not present), post flight analysis based
on CSXT's accelerometer data concurs with CSXT's stated maximum
altitude of roughly 72 miles. AST's post flight results were generally
within 5% of those of CSXT. Public safety was maintained as both
sections of the rocket impacted harmlessly, roughly 20 miles from
the launch site.”
The Civilian Space eXploration Team would like
to thank the office of AST-200 for their significant contributions
in assisting public safety assurance and facilitation of approvals
for this flight, and previous space launch attempts spanning nearly
7 years of cooperative effort. We would also like to thank the
many sponsors and supporters that have assisted in this endeavor
over the years, including Fuscient LLC and Go Fast Sports Inc
for their unwavering support throughout the GoFast rocket development,
launch, and recovery.
CSXT has made exclusive arrangements to publish an article containing
details of the GoFast rocket design, flight data, and results
in eXtreme Rocketry magazine later this year.
Jerry L. Larson
Vice President, Launch Conductor
Civilian Space eXploration Team
Photos courtesy of Go Fast
Sports Inc. (www.gofastsports.com)
and Billy Robin McFarland
The Civilian Space eXploration Team May 16th 2004
Congradulations from Mojave
Hey, nice work on beating us to 100km. I know how tough that is………good job.
We have a requirement for a solid rocket motor to help accelerate the GlobalFlyer on the runway during the world-flight.
Can you guys supply a solid motor that is safe to attach to a manned acft that is carrying 18klb of jet fuel??