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Genesis of LMR & HPR.

In-flight pod release rocket!!

SENTRA SRB is a side-staged pod release rocket. It offers dramatic in-flight action in conjunction with the high performance of the main central rocket. The Interchange mount in the main body offers many motor options. Much like the Space Shuttle, SENTRA SRB releases the pods in mid-powered flight upon booster motor burnout. This is why very short to zero delay motors are used in the side pods. Long burn central motors are best for good post boost performance. Includes 29mm, 3-29mm, 4-24mm interchange mounts. This efficient design has a drag reduction shrouds on the booster stages. All three stages can recover by parachute and the rocket has good motor versatility, so it is a real pleasure to build and fly. It uses Discontinuous Staging™ to permit parachute recovery of both stages. Discontinuous Staging™ is used on designs where the stages have no direct flame path and permits the lower stage to be recovered by parachute.

Skill 4
Motors 66/29/3x29mm/
Recovery Parachutes
not included
Diameter 4.0"
Length 88"
Weight 1350g
Drag (CD) 0.70/0.45
CP(") 68.3/71.1
SKU# 1063
Price $199.95
Definition Of Terms

SENTRA SRB can be slightly modified to accept new dual deployment systems and altimiters. The payload can be deployed on both sides of the coupler or both sides of the payload tube. This rocket is recomended for science work. It flies surprisingly well on 2 F80-4 to G30-4. Best flights are with USR 2 H240-4 to I65-8. SENTRA SRB has been successfully tested with as high of power as 2 H160 to K250-12 with a payload. Its very strong and lightweight construction makes it fly surprisingly high compared to other rocket kit brands. Test it for yourself!

All U.S. Rockets Experimental Rocket Series kits feature pre-cut plywood fins, heavy duty airframe tubes, strong elastic shock cord, illustrated assembly and flight instructions, decal and all the high quality parts needed to successfully assemble and fly a high performance model rocket. Launcher, motors, glue, sandpaper, sealer and paint not included.

Recovery configuration and Interchange mount options

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