CZ Brat
Well-Known Member
- Joined
- Jan 3, 2013
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Hey guys. I am a fan of baffles. I like the idea of using engineering to remove a manual step or consumable product. I know that baffles add more wieght to rockets than wadding, dog barf or chute protectors. But I also like the idea that I only have to design/build it right once, it will be right launch after launch, unlike the other methods that require me to do it right each launch. So with that said, here is my idea for a short 3" rocket with 29mm mount to use big F - baby H.
Here are the design pics to start
So the MMT is 1" longer than the longest motor I plan to use (Rouse Tech 29/180). At the top is a slot that is 1" long and 60 degrees wide (width between the plates). There are 6 plates, (1) 4" x .86" x 1/8" balsa and (5) 3" x .86" x 1/8" balsa. Distance between the CR and bulkhead is 4". The 4" plate is next to the slot in the MMT and the 3" plates alternate between touching the Bulkhead and the CR. The Bulkhead has a slot that is .86" (distance between MMT OD and BT ID), by 60 degrees. It is located next to the 4" plate on opposite side from the slot in the MMT.
Ejection gasses come up the MMT, hit the bulkhead and do a 180 going down between the MMT OD and BT ID with the 4" plate on one side and the 3" on the other side. 3" down it's path, the short plate stops. The gasses hit the CR and do a 180 and go up till they hit the bulkhead and get re-directed downward again. This continues till the gasses make their way back to the other side of the 4" plate. They are heading upward at this point. At the top, there is a cutout in the bulkhead which allows them to go upwards and push your chute out.
The gasses make 6 180s in their path. Their is a large volume of cool air they have to push ahead, and thus pressurize, before they leave the baffle system. Since most of the baffle is located lower than the end of the motor, this saves linear space, which is really important in shortys like what I am looking to build.
Soooooo.....
Think it will work?
Ever seen it before?
Ideas, suggestions, input?
Here are the design pics to start
So the MMT is 1" longer than the longest motor I plan to use (Rouse Tech 29/180). At the top is a slot that is 1" long and 60 degrees wide (width between the plates). There are 6 plates, (1) 4" x .86" x 1/8" balsa and (5) 3" x .86" x 1/8" balsa. Distance between the CR and bulkhead is 4". The 4" plate is next to the slot in the MMT and the 3" plates alternate between touching the Bulkhead and the CR. The Bulkhead has a slot that is .86" (distance between MMT OD and BT ID), by 60 degrees. It is located next to the 4" plate on opposite side from the slot in the MMT.
Ejection gasses come up the MMT, hit the bulkhead and do a 180 going down between the MMT OD and BT ID with the 4" plate on one side and the 3" on the other side. 3" down it's path, the short plate stops. The gasses hit the CR and do a 180 and go up till they hit the bulkhead and get re-directed downward again. This continues till the gasses make their way back to the other side of the 4" plate. They are heading upward at this point. At the top, there is a cutout in the bulkhead which allows them to go upwards and push your chute out.
The gasses make 6 180s in their path. Their is a large volume of cool air they have to push ahead, and thus pressurize, before they leave the baffle system. Since most of the baffle is located lower than the end of the motor, this saves linear space, which is really important in shortys like what I am looking to build.
Soooooo.....
Think it will work?
Ever seen it before?
Ideas, suggestions, input?
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