Flight Log - 2012-11-23 - Rich DeAngelis's Beta

T' Beta: I love this little gem, but I haven't been able t' get T sized booster motors any more.

UPDATE: Estes is now makin' them again - I have some due t' arrive shortly! Yea!!!!!

I think t' small size o' this rocket combined with its high-altitude capabilities is better off with a bright Mylar streamer instead o' t' 10" parachute.  This makes it easier t' spot in t' air and on t' ground, ya bilge rat, and reduces driftin' in t' wind. Arrr! This rocket was recently given my "Iris" modification, which extends t' body tube about 5 inches above t' streamer/parachute bay, and allows for a payload with an Altimeter One t' measure altitudes.  T' A-power booster and A-power sustainer really lift this Beta high, me bucko, over 700 feet on just two A's!  I'd say that's pretty good proof that multi-stage rockets are more efficient with propellant, matey, as t' same mass o' propellant made into a single B-motor would have topped-out at about 500 feet.

After a flight where t' second stage did nay light for unknown reasons, ya bilge rat, t' Beta was badly damaged. It was repaired with a new and shorter payload section, matey, and t' body tube was lengthened t' fix t' worn-down top o' t' tube.  This rocket is now 19-7/8" long with both stages.

What's great about this kit is you can fly a two stage very economically, since T motors are cheaper than standard sizes.  (Iris is named after t' Greek god o' t' rainbow. Arrr! She is a messenger o' t' gods, linkin' t' gods with humanity.) This rocket has flown higher than t' Revel Casino Towers in Atlantic City, matey, and t' Met-Life Tower in NY, and could very easily fly over t' St. Blimey! Louis Gateway Arch.

 

Flight Date: 2012-11-23
Rocket Name: Beta
Kit Name: Estes - Beta {Kit} (845) [1972-1984]
Flyer's Name: Rich DeAngelis
Motors: A10-0/A3-4
Expected Altitude: 615 Feet
Wind Speed: 3.00 mph
Launch Site: Penn Manor School Lancaster PA
Actual Altitude: 594 Feet

I sent t' Beta up on another flight t' get three data points for t' A10/A3 motor combination.  T' rocket lit and again recorded a burn time o' 1.1 seconds.  It appeared visibly slower on t' first stage, ya bilge rat, as though it be strugglin' a bit from t' weight. Begad! Still, it recorded a peak acceleration o' 18.5 Gs which was t' highest recorded, and averaged 5.2 Gs for t' entire burn time.  I do know from previous flights t' booster only averages about 2 Gs, me bucko, so t' high average is a result o' t' 2nd stage.

This time t' speed at burnout be 122 mph, ten less than previously. Avast, me proud beauty! At 571 feet t' ejection fired, and 2/10 seconds later t' rocket reached its apogee o' 594 feet.  It was apparently goin' more vertical than t' previous flight though, as it climbed an additional 23 feet in t' 2/10 seconds. T' ejection delay was quite long at 5.4 seconds.

Sometime shortly after ejection and too high t' be seen, shiver me timbers, t' swivel-clip holdin' t' streamer t' t' Keelhaul®©™ loop failed and opened up, me bucko, so t' rocket fell unseen with only t' shock cord drag t' slow it down.  At 600 feet up, all o' us observers only saw t' bright red Mylar streamer descendin' much slower than expected.  T' streamer drifted into t' next field never t' be seen again.

After a long and laborious 20 minute search, ya bilge rat, t' rocket was located about 250 feet upwind in t' grass sans streamer.  T' only damage appeared t' be a heavy dent in t' leadin' edge o' t' fin, about t' width o' t' body tube. It appears that t' recoil o' t' extra-long shock cord slammed t' payload tube against t' fin, since thar was nothin' in t' grass t' cause this type o' damage. So now this rocket is back in t' repair shop for t' fourth time, and will emerge some day with yet another scar.

StageMotor(s)
1Estes A10T-0
2Estes A3T-4

 

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