01-30-2013, 07:17 PM
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The_Ripper
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Join Date: Jun 2005
Location: Louisiana
Posts: 1,941
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Quote:
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Originally Posted by otis
Apparantly there were at least two types of boosters for the DART. Here is a picture of both. One is labeled SPECIAL Purpose Rocket Thruster and the other (bagged) one is just an F-100-0 with the letters RX1 hand writtten with a pen on the motor. This bag is unopened so I know it cave from FSI that way. Th opened one also had the thn tube glued into the top (to hold the Dart) but I had cut it off long ago thinking to fly this as a plugged motor. Both motors have the top end rounded.
Mike
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Mike,
Cool images & glad you posted these for reference. Regarding your bagged RX-1 from July 1984, I have personally never seen a booster with the tube coupler configuration. I recall flying Mach-1 Dart with the RX-1 about half a dozen times. All of my boosters were early versions of the RX-1 same as I described earlier. Although I do not have the mfg date of the motors, my Polaroid photos referenced in the link I provided are dated. The yellow Dart with purple RX-1 was flown in June 1978. The two in the closet photo were 1978-1979. One was flown & Dart damaged. The lift off shot image was a flight made on 5-1-88. I purchased all of the systems between 1977 & 1979 before I layed low in rocketry when I went to college late in 1979.
I assume your system mfg 6 years later than mine we're to improve the original design although i can't figure why the coupler was necessary. The D20 in my systems recessed about an inch into the top of the booster and was a snug firm fit. Perhaps the coupler allowed FSI to not have to bore as deep and as close to the top of the grain as with the earlier design?
It is interesting to see this as I have heard others mention that their booster had a coupler, same as yours.
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