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Length: |
7 feet, 1.5
inches |
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Diameter: |
4.02 inches |
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Weight: |
12.5 lbs
without motors (Estimated) |
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Motor: |
81mm motor
tube fits Hypertek K240 835cc tank |
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Altimeters: |
Two
MissileWorks RRC2
altimeters |
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Locator: |
Walston radio
transmitter |
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Payload: |
GPS telemetry
downlink |
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Parachute: |
Giant Leap
TAC-1 72" |
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Built: |
Started: Jan
2006. Completed: June 2007 |
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First Flight: |
October 7,
2007 at Tripoli Idaho Birds-of-Prey launch |
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Construction: |
Body tube:
Flexible Phenolic with two layers of 6 oz fiberglass
Fins: G10 fiberglass
Nose cone: 5:1 Ogive, 3.9" diameter
plastic "Pinnacle" nosecone from
Giant Leap
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| Click on any photo to see a larger version of it. |
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Photo by Vern Knowles (remotely) |
Photo by Vern Knowles |
Coldfire
Flight #5
Sept. 22, 2008
K550 motor
At XPRS 2008 Coldfire reached 5,910 feet
on a K550 motor and
was safely recovered about 1,000 feet behind the flight line.
MORE DETAILS HERE! |
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Photo by Vern Knowles |
Photo by Vern Knowles |
Coldfire
Flight #4
July 20, 2008
HyperTek K240 motor
It was a very short flight!
Coldfire was about 350 feet high and in mid motor burn when suddenly the
parachute deployed!
MORE DETAILS HERE! |
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Photo by Vern Knowles |
Photo by Vern Knowles |
Coldfire
Flight #3
May 3, 2008
J420R Redline motor
Another nice flight with
Coldfire reaching 1664 feet. It was a very calm day and Coldfire landed
only 200 yards away. |
 |
Photo by Vern Knowles |
Coldfire
Flight #2
April 12, 2008
J415W motor
Yes, this is a solid propellant motor not a
hybrid. Coldfire can fly on either type motor!
Perfect flight! Coldfire
reached 4038 feet. |
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Photo by Greg Fannin
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Coldfire Flight #1
October 7, 2007
The first flight of
Coldfire was
at the Tripoli
Idaho "Birds of Prey" launch on a HyperTEK K240 hybrid motor. The wind
was blowing about 10-12 MPH when it was launched so Coldfire weather
cocked into the wind. This reduced the peak altitude to 3,022 feet.
However, it was recovered with absolutely no damage. It was a great
first flight!
Here Vern is standing next to
Coldfire prior to its maiden flight.
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Photo by Vern Knowles |
Photo by Vern Knowles |
Liftoff on a K240 hybrid
motor. |
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Photos by Vern Knowles |
Liftoff of Coldfire on a K240 HyperTEK hybrid motor.
This is an animated set of
still images taken by a digital camera close to the launch pad. Each
image was captured at 1/8000 sec and the time between successive images is
200ms.
Click on the animation to
see the full set of nine images in a larger size.
Link to full size animation
(1MB file) |
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Photo by Vern Knowles |
Photo by Vern Knowles |
Coldfire deploys a 72"
Giant Leap TAC-1 chute for recovery. |
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