Destroyerator Booster Work

I received some of the necessary items to continue work on Destroyerator. Most recently I received threaded rods, and corresponding nuts and washers, the Aero Pack 98mm motor retainer, and one of the Perfectflite mini timers.

 

The centering rings are drilled for the threaded rods. 2 have been laminated together, forming .5" thick versions for the aft-most, and forward-most centering rings. The aft centering ring was marked and center punched for the 12 cap screws that will hold the motor retainer in place. That ring is currently layered with 2 pieces of 10 oz/sq.yrd fiberglass cloth, and weighted with 50 pounds for a nice finish.

  I also figured out the final length of the rocket, which was based on how much length was needed in the booster for the recovery gear. The length will be 20.5 feet in the 2 stage configuration and 14.5 feet in the single stage configuration. 

I was originally going to use Positive Ascent's parachute and deployment bag in the booster. However, I will not be using the deployment bag. Instead, I will fold the parachute in a more optimal method for this larger diameter rocket, taking up only 9 inches of body tube. It will still be protected by Kevlar or Nomex heat shields.

The next steps for the construction will be mounting the Aero Pack retainer and cutting threaded rods.