A BFR... B Stands For Big, R Stands For Rocket

This is dedicated to the next few months.

The creation of a new rocket from concept to flight.

Highlights, if you will... atleast some of them anyway.

BASICS

  • 10" nominal diameter sonotube airframe.
  • 10-11 feet tall
  • 150lbs expected weight.
  • Loki N3800 motor 12,500ns  ~ 1,000lbs of thrust for 3 seconds. *(not quite a PBR official ride time)*
  • Dual Deployment.
  • 4 Fins and A Nose Cone.
THIS WILL BE FUN... or I have already failed at the most important parameter!!!!

A peek of the plan!


CONSTRUCTION BEGINS


Start with a BIG tube.

A tube for the motor.


Yep, looks like its going to fit.


Measure twice, cut once.


Diameter is 1/2 of the important measurements.


Circumfrence is the other 1/2 of important measurements.


MATH... UGHHH.


Charting sugar in the blood stream.(not really rocket but hey.. it,s science)


Not quite differential equations.


1 would be boring, we will drill 4 to make it even numbered.


Saws are childs play.


Proud of the successful cut.


FINS, you gotta have'em


An easy way to make small format (11x17) to large format (32 x 40)


spray glue, good for lotioning hands :) yea right?

Cut out!

Cut out more fins.

Weight test, passes, just barely.

Exact length of fin is very important, I tack them together, and do a cut with the miter saw, so that all 4 fins are the exact same length.

Tack fins to bevel jig.

Beveling fins with table saw (sucky part)

Tacking fins on with epoxy.


All Cut and trimmed and ready for flight.



All fins tacked and ready for structural fillets.


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