Tramper Al
Well-Known Member
- Joined
- Dec 31, 2013
- Messages
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Hi,
As a big fan of camera rocket models, I was pleased to recently discover plans for an Astrocam Carrier by Fred Williams, from Sport Rocketry, 1995.
https://oldrocketforum.com/attachment.php?attachmentid=44335
My question is about card stock paper shrouds. I know they were once much more commonly employed, but I think I have only built one rocket that called for a paper shroud, and that was the Camroc Carrier. In that case, however, the shroud is purely aerodynamic/aesthetic, as the balsa adapter for the payload section sits right into the body tube proper, so that the shroud is simply a second skin, if you will. You could certainly build it and fly without the shroud.
In the Astroccam Carrier plans, however, the paper card stock shroud seems to form the entirety of the connection between body tube below and payload above, and I wonder how can this be strong enough for the rigors of flight and recovery? For use with D engines, the modeler suggests plywood fins and heavy fillets, but I would have thought the weak point would be the paper shroud. Am I wrong? Should it be strengthened somehow? Or am I misreading the plans? Getting a perfectly straight alignment with a paper shroud may be another issue, I realize.
Thanks in advance . . .
As a big fan of camera rocket models, I was pleased to recently discover plans for an Astrocam Carrier by Fred Williams, from Sport Rocketry, 1995.
https://oldrocketforum.com/attachment.php?attachmentid=44335
My question is about card stock paper shrouds. I know they were once much more commonly employed, but I think I have only built one rocket that called for a paper shroud, and that was the Camroc Carrier. In that case, however, the shroud is purely aerodynamic/aesthetic, as the balsa adapter for the payload section sits right into the body tube proper, so that the shroud is simply a second skin, if you will. You could certainly build it and fly without the shroud.
In the Astroccam Carrier plans, however, the paper card stock shroud seems to form the entirety of the connection between body tube below and payload above, and I wonder how can this be strong enough for the rigors of flight and recovery? For use with D engines, the modeler suggests plywood fins and heavy fillets, but I would have thought the weak point would be the paper shroud. Am I wrong? Should it be strengthened somehow? Or am I misreading the plans? Getting a perfectly straight alignment with a paper shroud may be another issue, I realize.
Thanks in advance . . .
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