Screaminhelo
Shade Tree Rocket Surgeon
- Joined
- Jan 30, 2013
- Messages
- 935
- Reaction score
- 4
Here is my entry.
I love low'n'slow launches and short, fat rockets so this is my attempt to combine the two.
View attachment BYOD.ork
Neil_w got me to thinking about tubes and rings and I started playing in OR. It will have tube fins and the balsa fins are there to approximate the final profile. The ring fin will be used if needed. You may also note that the motor is rather deeply recessed...
That is where the gadget in the image below comes into play.
I will need to draw in some air to help protect the aft end of the airframe and attempt to avoid an encounter with Mr. Krushnik. This is the master for an NACA style inlet. The inlet will terminate just FWD of the nozzle so that the exhaust stream can draw in cool air. This is not an attempt at DGS though, so any added stability from this will be a bonus.
The ultimate goal is to fly this on a BP F motor and keep it below 1k feet. Right now, mind sim says it is doable with a 6' rod (I will have to watch the weight gain) but I will go to a composite if needed.
It will be a slow start though, I'm going camping with Uncle Sam for a while.
I love low'n'slow launches and short, fat rockets so this is my attempt to combine the two.
View attachment BYOD.ork
Neil_w got me to thinking about tubes and rings and I started playing in OR. It will have tube fins and the balsa fins are there to approximate the final profile. The ring fin will be used if needed. You may also note that the motor is rather deeply recessed...
That is where the gadget in the image below comes into play.
I will need to draw in some air to help protect the aft end of the airframe and attempt to avoid an encounter with Mr. Krushnik. This is the master for an NACA style inlet. The inlet will terminate just FWD of the nozzle so that the exhaust stream can draw in cool air. This is not an attempt at DGS though, so any added stability from this will be a bonus.
The ultimate goal is to fly this on a BP F motor and keep it below 1k feet. Right now, mind sim says it is doable with a 6' rod (I will have to watch the weight gain) but I will go to a composite if needed.
It will be a slow start though, I'm going camping with Uncle Sam for a while.
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