SpaceDev Begins Development of New Launch Vehicle
SpaceDev of Poway,
California has started development of rocket motors for its new
small expendable launch vehicle, SpaceDev Streaker. In support of
that development program, SpaceDev has expanded in Poway, leasing
11,000 square feet for a flexible fabrication and development
facility.
Much of the development equipment is being installed on flatbed
trailers to make it transportable. The key component is the test
stand; SpaceDev is planning a mobile rocket motor test stand that
can handle a motor or cluster producing up to 250,000 pounds of
thrust. Currently SpaceDev has a 120,000 pound thrust motor in
preliminary design, the Small Common Booster motor which will form
the first stage of the Streaker. "The portable test stand is
expected to open more potential sites for rocket motor firings and
is expected to cost less than renting existing government
facilities," SpaceDev officials told ANN in a prepared
statement.
"This new rocket motor test equipment should be applicable to a
wide variety of future hybrid rocket motor developments," Jim
Benson, SpaceDev Chairman and CEO, said.
Along with the test
stand, SpaceDev is constructing a transportable command
center/launch control, and a test support trailer which can store,
upload, download and maintain the nitrous oxide oxidant used in
SpaceDev's motors.
The Streaker's second stage will use clustered Hybrid Upper
Stage motors, which are expected to produce 20,000 pounds of thrust
each. These motors are being developed under contract to the Air
Force Research Laboratory. The first stage will be a single Small
Common Booster motor.
The Air Force contract was announced last October, and SpaceDev
has been working fast. Benson indicated that test firings would
begin this summer. "We are working closely with our Air Force
customer, and hope to soon begin work designing and developing the
Small Common Booster motor for SpaceDev Streaker."
SpaceDev acquired its initial hybrid rocket technology from
concept pioneer AMROC (American Rocket Company) and continues to
develop it further. Hybrid rocket motors are so-called because they
share some characteristics of solid and liquid fueled rockets.
SpaceDev has experimented with many fuels and oxidants; now its
hybrids generally burn solid rubber (HTPB) and use gaseous nitrous
oxide (laughing gas) as oxidant.
They are among the safest rocket motors ever designed; they're
non-explosive, the fuel and oxidant are non-toxic, and all are
storable. "The combination of HTPB or PMMA and N2O is totally
benign and non-toxic," SpaceDev says. The company hammers the point
home by noting that Vandenberg AFB's rocket range rates the
SpaceDev motor as equivalent of O grams TNT, and nitrous oxide is
used as a pressurant for whipped cream. If this safety pitch sounds
familiar, it should: a SpaceDev motor with 15,000 pounds of thrust
powered SpaceShipOne to outer space and the Ansari X-Prize last
year.
The Hybrid Upper Stage motor, already 20k lbs thrust to
SpaceShipOne's 15k, is expected to gain even more performance as
company works to improve it and incorporate new developments. Plans
are to follow the Small Common Booster motor with -- what else? --
a Large Common Booster motor.
What are they going to do with all these motors? Of course, they
will fly launch vehicles for customers, like the Air Force... and
they will build an engine for "Aussie Invader" Rosco McGlashan
900-mph rocket car (above), if he can raise the money... but
SpaceDev has also announced its DreamChaser manned vehicle, and
expects to use these motors in the sub-orbital and orbital versions
of DreamChaser.