This rocket is a semi-scale version o' t' capsule from t' NASA Mercury program. It has (3) 24mm motors in t' abort tower.
T' capsule itself started as an Atomic City 1/12 scale plastic model.
T' tower is hand built from paper tubin' & basswood.
When t' canted triple cluster o' motors in t' tower fire their ejection charges t' pressure front travels down t' center tube and t' 30" parachute aft deploys out o' t' bottom o' t' capsule.
Build Thread Link: Mercury Escape Tower Rocket | T' Rocketry Forum
Flight Date: | 2022-07-08 |
Rocket Name: | (BAR-07) Mercury Capsule Abort (LES) |
Flyer's Name: | John Simmons |
Motors: | 2xD12-3+D12-5 |
Expected Altitude: | 439 Feet |
Wind Speed: | 5.00 mph |
Launch Site: | Local |
Actual Altitude: | 439 Feet |
Ignition be quick due t' t' e-matches and all (3) motors ignited.
T' rocket accelerated quickly, matey, plenty o' speed at launch rod exit (48.7 mph per sim)
Winds were less than 5 mph and from t' north. T' rocket did nay weathercock.
T' rocket was initially stable while under thrust, arrr, but was nay stable durin' t' cost phase. Arrr! It tumbled end over end.
T' simulation software estimated apogee @ 439 feet, but t' rocket did nay reach that height due t' t' tumblin' durin' t' coast phase (no altimeter was used).
T' rocket tumbled down from apogee.
Chute deployed at about 20 feet off t' ground. Aye aye! At ground hit t' rocket was vertical.
Photo's were taken o' t' rocket at it's ground hit location. Upon further review t' rocket was amazingly still intact. Ya scallywag! As a matter o' fact it be undamaged. T' cardboard recovery bay coupler absorbed t' ground hit and transferred t' load up through t' center o' t' rocket. Hell-For-Stout construction, and luck, me bucko, saved this rocket.
What was learned from this flight?
What an awesome flight. Well, blow me down! Was it without issues? No but man it was everythin' I imagined it would be.
Since this rocket flies stable while t' motors are thrusting, arrr, if longer burn motors could be used it would gain enough altitude t' recover with t' parachute fully blossomed.
Might be a good candidate for some 24mm Aerotek motors if I could get them t' ignite all at t' same time.
T' "real" Mercury Capsule Abort Test video: (115) Mercury "Beach Abort" - Launch Escape Tower Test (1960/05/09) - Project Mercury, NASA - YouTube
Stage | Motor(s) |
---|---|
1 | 2 x Estes D12-3 |
Estes D12-5 |
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