Model Rocket Construction
A full day in the workshop building some new rockets to launch this spring: Athena, Alpha III, Black Brant VA, Black Bran IV, and the Blue Dart Alpha I.
Cozy MKIV – February 8, 2020
Installation of the aft heat duct: Workshop temperature 22 deg C and humidity 35%. A batch of flox was mixed using 54g resin and 21g hardner. Flox was applied to the bottom of the heat duct and to the fuselage where required. The heat duct was positioned in place and weighed down with bricks. Excess …
Cozy MKIV – February 1, 2020
Removed the peel ply and trimmed the excess fiberglass from the aft heat duct. Drilled the seatbelt anchor holes out. Sanded the aft heat duct then cut a hole in the top of the heat duct for the transition piece. Workshop temperature 20 deg C and 41% humidity. Mixed 12g resin and 4g hardner with …
Cozy MKIV – January 25, 2020
Trim, sand, and vacuum the aft heat duct. Cut 2-ply BID cloth @ 45 deg orientation and a piece of peel ply to cover the layup. Workshop temperature 24 deg C and 40% humidity. A batch of epoxy was mixed using 188g resin and 72g hardner. Epoxy was brushed onto the top glassed portion of …
Cozy MKIV – January 18, 2020
The areas where the birch plywood inserts are to be installed were sanded with 36 grit sandpaper. 7-ply BID cloth was cut for each of the four inserts. A 1″ overlap was used except for the insert where the step will be attached. For this insert a 1.5″ overlap was used. Workshop temperature was 24 …