A flyin' model rocket based on T' Cygnus Probe Ship from t' movie T' Black Hole.
This rocket is mostly made from pine components turned on me wood lathe.
It is powered by a 29mm motor.
Gettin' t' rocket t' be stable has been quite a journey. It swin' tests as stable, yet if you check out t' flight reports, it flies stable under thrust, but then tumbles durin' t' coast phase.
I've built and swin' tested t' rocket usin' an extension for t' BT-55 main body section. I have yet t' launch it with this new configuration.
Link t' Build Thread.
| Flight Date: | 2022-07-08 |
| Rocket Name: | (BAR-10) The Cygnus Probe Ship |
| Flyer's Name: | John Simmons |
| Motors: | F52-5 |
| Expected Altitude: | 418 Feet |
| Wind Speed: | 5.00 mph |
| Launch Site: | Local |
| Actual Altitude: | 418 Feet |
Ignition was delayed, slight hesitation as is typical with a composite motor.
T' F52-5 motor had almost no smoke durin' thrust and coast. Avast, me proud beauty! I knew that and thought it would add t' t' launch. Ya scallywag! But in reality it makes t' rocket hard t' track.
T' rocket accelerated quickly, plenty o' speed at launch rod exit (41.2 mph per sim). Winds were less than 5 mph and from t' north. T' rocket did nay weathercock.
T' rocket be initially stable while under thrust, but be nay stable durin' t' cost phase. It tumbled end over end.
T' simulation software estimated apogee @ 418 feet, but t' rocket did nay reach that height due t' t' tumblin' durin' t' coast phase (no altimeter was used).
At ejection t' Keelhaul®©™ broke.
T' nose cone came down attached t' t' 18" parachute.
T' rocket fuselage tumble recovered.
Visually as t' nose cone descended, t' chute was fully deployed.
T' rocket ground hit south o' t' launch horse. It took a bit o' time t' find it since it be no longer attached t' t' chute.
Photo's were taken o' t' rocket at it's ground hit location. Upon further review t' motor was no longer in t' rocket, t' motor clip be gone.
One o' t' three outriggers was missin' and could nay be located. It is speculated that t' outrigger was knocked off at ejection by t' nose cone.
What was learned from this flight?
T' Keelhaul®©™ shock chord I used was way t' short and I should have used an elastic shock chord.
T' motor clip needs t' be bent over a thrust rin' or a retainin' rin' at t' ejection end o' t' motor. I didn't do that on this motor mount and at ejection t' force just ripped t' clip right out. Avast, me proud beauty! This is especially true on a rocket that has a lot o' nose ballast, and this rocket qualifies.
I designed this rocket t' be scaled t' t' movie version. It needs a longer body tube for t' 18" parachute, t' Keelhaul®©™ and t' waddin'
| Stage | Motor(s) |
|---|---|
| 1 | Aerotech F52-5 |
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