It's been a while since I posted so I thought I would do a quick build thread on my Plaster Blaster project. I built a 5.5 inch Polecat Nike Smoke with a 75mm motor mount and after successfully flying it on a L1420R
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I decided I couldn't leave well enough alone so I got another kit (sans nose cone) and am now building a NIKE-NIKE Smoke. Both booster and sustainer will have 75mm motor mounts. I plan on flying it on a M1550R staging to the new M650 long burn motor. Should be spectacular one way or the other...
Anyway here goes.
Interstage coupler. In order to keep the scale appearance I used the components from a dual deploy kit with two couplers in the dual deploy section that normally would have the altimeter bay. Since the interstage coupler seems to be a common point of failure I wanted the couplers to be stiff as possible so I put two wraps of 12.5 oz carbon cloth in each and put two bulkheads between the couplers.
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One half is the altimeter bay for the booster and the other half is the receiver for the sustainer. The altimeter bay is the typical polecat design....love those laser cut parts.
Here's the bay put together -
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Next is the motor tube. Four centering rings to give it the stiffness I need just in case I decide to fly a higher thrust motor. I prefer to have the staging and ignition electronics in the sustainer so it's self contained so you can see the wiring.
Booster separation and sustainer ignition will be via remote control to give some measure of safety.
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Quality of the kits are very high so assembly is pretty much a snap. I put in the motor tube and fins and that completes a half a days work.
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I let the sustainer motor hang out the back three inches in order to save the rear of the rocket from being cooked by a 9.5 second M class burn.
Booster will be a single deploy while the sustainer will be dual deploy (both with rocket hunters of course.)
I'll post more as I get time to work on it. I do plan on tip to tip carbon on the fins to ensure they don't flutter since it should make it through mach.
cheers
Mike
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I decided I couldn't leave well enough alone so I got another kit (sans nose cone) and am now building a NIKE-NIKE Smoke. Both booster and sustainer will have 75mm motor mounts. I plan on flying it on a M1550R staging to the new M650 long burn motor. Should be spectacular one way or the other...
Anyway here goes.
Interstage coupler. In order to keep the scale appearance I used the components from a dual deploy kit with two couplers in the dual deploy section that normally would have the altimeter bay. Since the interstage coupler seems to be a common point of failure I wanted the couplers to be stiff as possible so I put two wraps of 12.5 oz carbon cloth in each and put two bulkheads between the couplers.
<a href="https://photobucket.com" target="_blank"><img src="https://i129.photobucket.com/albums/p213/smurfmacaw/IMG_0110.jpg" border="0" alt="Photo Sharing and Video Hosting at Photobucket"></a>
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<a href="https://photobucket.com" target="_blank"><img src="https://i129.photobucket.com/albums/p213/smurfmacaw/IMG_0111.jpg" border="0" alt="Photo Sharing and Video Hosting at Photobucket"></a>
One half is the altimeter bay for the booster and the other half is the receiver for the sustainer. The altimeter bay is the typical polecat design....love those laser cut parts.
Here's the bay put together -
<a href="https://photobucket.com" target="_blank"><img src="https://i129.photobucket.com/albums/p213/smurfmacaw/IMG_0108.jpg" border="0" alt="Photo Sharing and Video Hosting at Photobucket"></a>
Next is the motor tube. Four centering rings to give it the stiffness I need just in case I decide to fly a higher thrust motor. I prefer to have the staging and ignition electronics in the sustainer so it's self contained so you can see the wiring.
Booster separation and sustainer ignition will be via remote control to give some measure of safety.
<a href="https://photobucket.com" target="_blank"><img src="https://i129.photobucket.com/albums/p213/smurfmacaw/IMG_0113.jpg" border="0" alt="Photo Sharing and Video Hosting at Photobucket"></a>
<a href="https://photobucket.com" target="_blank"><img src="https://i129.photobucket.com/albums/p213/smurfmacaw/IMG_0114.jpg" border="0" alt="Photo Sharing and Video Hosting at Photobucket"></a>
Quality of the kits are very high so assembly is pretty much a snap. I put in the motor tube and fins and that completes a half a days work.
<a href="https://photobucket.com" target="_blank"><img src="https://i129.photobucket.com/albums/p213/smurfmacaw/IMG_0117.jpg" border="0" alt="Photo Sharing and Video Hosting at Photobucket"></a>
I let the sustainer motor hang out the back three inches in order to save the rear of the rocket from being cooked by a 9.5 second M class burn.
Booster will be a single deploy while the sustainer will be dual deploy (both with rocket hunters of course.)
I'll post more as I get time to work on it. I do plan on tip to tip carbon on the fins to ensure they don't flutter since it should make it through mach.
cheers
Mike