The best projects are the ones that actually happen. That's why KegRocket is being designed from the ground up to be relatively inexpensive to build while targeting value selections for critical components to maximize safety and reliability.
KegRocket is not meant to be a cutting-edge, high performance rocket. It's meant to be fun and inspiring to design, build, and fly.
Our project expressly relies on the public knowledge base of liquid rocketry and does not incorporate protected ITAR/EAR technologies in its design.
This info is evolving, so check back often!
Key Vehicle Specs:
Tanks: 2x 30 liter (1/4 barrel) 304L stainless steel beverage kegs
Custom Formed Aluminum Spars
Composite nose section
The main structure of KegRocket consists of two 30-Liter beverage kegs and custom formed 5052 Aluminum frame members. A thin aluminum skin makes the rocket more aerodynamic and protects the sensitive equipment inside from the elements.
The Recovery & Avionics nose module is constructed from readily available glass composite tube.
Nearly all fasteners in the rocket are 304 Stainless Steel for corrosion resistance and low-temperature strength.
Key Propulsion Specs:
Fuel: 95% Ethanol
Oxidizer: Liquid Oxygen
Thrust: 1000 lbf - 660 lbf
Burn Time: 11s
Max Chamber Pressure: 215 psia
Mixture Ratio: 1.45
KegRocket's engine is affectionately dubbed "Growler" since its about the same size as a beer jug, often called a growler. The combustion chamber is "cooled" by a ablative composite liner for simplicity. The propellant is fed to Growler by the expansion of the pressurized gas space in the kegs, resulting in a blowdown (decaying) thrust profile.
Key Avionics Specs:
Common STM32F405-based microcontroller architecture
CAN Bus inter-node comms protocol (dubbed Beer CAN)
Our avionics and ground systems are composed of a networked multi-node architecture based on a common board that controls the rockets sequencing and equipment using common off-the-shelf components.