In August 2018, Kloudbusters put out a press release announcing that their field will be the site of the next Tripoli Large Dangerous Rocket Ships (LDRS) Annual Launch. I was at AIRFest this year, and enjoyed my time on the flight line. So, it is only natural that I would want to attend the LDRS next year. With that, what follows is my LDRS 38 Master Plan.Continue reading “LDRS 38 Master Plan”
My son was coming down to Tampa in November for the Tampa Tripoli monthly launch. I had my MAC Performance Scorpion that I could launch. I also had some smaller rockets that I was going to launch from the low-power pads. Being interested in scale models, I have built quite a few low-power, scale model rockets. I wanted to build something a little bigger, so I went online and ordered the LOC Precision 4-inch V-2 rocket kit.
One of the events in the Bronze level of the NAR’s National Association of Rocketry Training Rocketeers for Experience and Knowledge (NARTREK) is parachute duration. I have completed the other three events: streamer duration, multi-staged rocket, and large engine rocket. My attempts at parachute duration has come up short. I used an A-impulse rocket, Apogee Component’s International Thermal Sailor. I used it to get my streamer duration time (36 seconds). Using the large parachute with the kit, I got 46 seconds in the air. I needed 60 seconds.
So, I decided to get a B-impulse rocket (18mm motor). I did not have to look far to find my rocket. Aerospace Specialty Products is right down the road from me in Florida. And the kit I chose was their Hang Time Rocket.
I am interested in earning the NAR’s National Association of Rocketry Training Rocketeers for Experience and Knowledge (NARTREK) achievements. One of the tasks for the Silver achievement is the construction and flight of a boosted glider. Apogee Components has suggested kits for completing each level of the program. The Sky Condor Boost Glider is a recommended kit for the Silver level.
Blue Tube is finished just about the same way as fiberglass or paper bodies with one exception. Dave Ebersole at Always Ready Rocketry recommends sealing the tube with a sanding sealer. His recommendation is Cabot Sanding Sealer and I used that for the BOTC84 finishing.
The BOTC84 motor mount and fin can will be of a standard construction with a total of three centering rings. The fins will be attached with the through-the-wall method. Fillets will be made at the motor mount, inside the body tube, and outside the body tube.
The BOTC84 Electronics Bay is a standard bay constructed of Blue Tube coupler that fits inside of the main body tube. The rest of the structure is aircraft grade plywood of various thicknesses. The Tripoli Level 3 certification rules stipulate redundant deployment electronics. I will be using a Altus Metrum TeleMega 3.0 for the primary and a PerfectFlite StratologgerCF as the backup.
The LOC Precision Removable Nose Weight System requires more construction but the end results are worth it. If your rocket is unstable, this system will help you get the center-of-gravity farther forward. In the case of the BOTC84, the system will be used to house tracking electronics as the nosecone will be recovered under a separate parachute. Instructions can be downloaded here. So, let’s get on with the BOTC84 nosecone build.
It is time to start working on my Tripoli Level Three rocket project. It is going to be a large rocket that will be powered by an “M” motor. I plan on launching the rocket at AIRFest in Argonia, Kansas this upcoming Labor Day weekend. The name of the rocket will be BOTC84. That represents “Best of the Corps” 1984. This post will document my BOTC84 rocket build.
Updated: 23 August 2018