Rocket Vision Custom Design Service

Rocket Vision - Custom Design Service

Contributed by Frank Ross

Manufacturer: Rocket Vision
Rating
(Contributed - by Frank Ross)

Brief:
Design service let's you choose tube length, payload section, choice of 3 fin designs, nylon chute recovery system with Kevlar® lines & shock cord & Nomex® chute protector.

Construction:
The Rocket Vision starter-level design service lets you choose from several options of components to build your own "Rugged Rocket" design. The choices are somewhat limited: choose your payload section (or omit a payload), choose from 3 airframe lengths (9+", 13", or 16"), and choose G-10 fins from 3 designs (either 3, 4, or 6 fins can be ordered). There is but one choice for the nose cone. You can also opt to add a recovery kit which includes a nylon chute, Nomex® chute protector, and Kevlar® shroud lines and shock cord. Finally, you can also choose from two stock decal sheets if you want to add some graphics to your finished rocket.

I chose to build the largest rocket possible by selecting the 5.25" payload and the 16" airframe. For fins I selected the 3-fin diamond design. I added the recovery kit and decal sheet no. 2 to complete my kit.

Design Choices

Note that the Rocket Vision design service does not include instructions. There are, however, highly detailed assembly guides (including detailed instructions, with photos) available on the Rocket Vision web pages for all of their rocket kits. Using these guides I was able to easily construct my design.

Rocket Pic I first used epoxy (30-minute, although 5-minute would be better) to secure the motor mount tube into the airframe tube. While this set I prepped the G10 fins by rounding the root edge and tail edge for aerodynamics. Next, I test-fit the fins into the airframe fin slots and found that I needed to sand the slots and fin root edge slightly so that the fins easily fit into the slots without too much force. I again used 30 minute epoxy to affix the fins and later for fillets.

I used the online guide for the Spitfire kit to construct the payload section. This amounted to securing the tube coupler and bulkhead to the payload section using epoxy. The nose cone is secured to the payload section with a single screw - the payload section comes pre-drilled for the attachment screw.

The final step for the rocket construction is the addition of the plastic launch lug - I again used 30-minute epoxy to attach and fillet the lug. The parachute, Nomex® protector, and Kevlar® shock cord attachment instructions are described for each kit and are all the same, and quite straight-forward.

Overall, the construction was a snap, the on-line guides are an excellent resource. I suppose it would be nice if some kind of general construction instructions were included with the kit however. The rocket is definitely "rugged" if not a little heavy for its size.

Finishing:
Finishing the rocket was a breeze. I first sanded the entire rocket, especially the nose cone which has a fairly rough finish. I primed with Krylon sandable primer, sanded, primed again, and finish sanded. I chose red and white Krylon paint with a Sandhawk-like paint scheme. The rocket finished beautifully, and there was no worries about any tube seams or spiral!

Construction Rating: 4 out of 5

Rocket PicFlight:
I've only flown the rocket once so far (stay tuned for updates). I chose a D13-5 24mm Aerotech RMS motor for the launch. The delay was just an educated guess, I did not simulate the launch on RockSim as I did not have time to add the custom components (would be nice if Rocket Vision made a RockSim database similar to PML!). The choice turned out to be very good. The flight was smooth to roughly 600 feet, with ejection at apogee. The rocket is quite stable, given its length, but needs a bit more power to get some altitude due to its weight. I will try some more power on the next flights pending simulation.

Recovery:
Unfortunately, recovery was a little fast as a couple of shroud lines came undone (better go back to my Boy Scout handbook and review my knots). The landing was rough but as advertised the rocket being "rugged" easily withstood the impact. The Nomex® did and excellent job protecting the chute though, and it's ready to go again.

Flight Rating: 4 out of 5

Summary:
PROS: Fun to design online, excellent component quality, durable, very easy to finish. CONS: Pricey for a smaller rocket, lack of component choices. I am very much looking forward to Rocket Vision's next stage of online kit design.

Overall Rating: 4 out of 5

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