CPMcGraw
02-15-2009, 10:12 AM
Another ringtail design. The original version was set up as a payloader, but the Dv numbers just wouldn't come into the safe range. This version eliminates the payload section, and lengthens the main body tube out to 18". The flight profile is now acceptable.
Length: 24.70"
Diameter: 1.04" (ST-10)
Fin Span: 3.26"
Weight: 1.45 oz
Launch rod: 36" x 1/8"
The high Dv numbers mean you need to use a reefed parachute for all of the listed engines.
A8-3......151'......Dv 19 FPS
B6-4......310'......Dv 25 FPS
B4-4......311'......Dv 27 FPS
C6-3......593'......Dv 19 FPS
Enjoy!
Length: 24.70"
Diameter: 1.04" (ST-10)
Fin Span: 3.26"
Weight: 1.45 oz
Launch rod: 36" x 1/8"
The high Dv numbers mean you need to use a reefed parachute for all of the listed engines.
A8-3......151'......Dv 19 FPS
B6-4......310'......Dv 25 FPS
B4-4......311'......Dv 27 FPS
C6-3......593'......Dv 19 FPS
Enjoy!