STINGER ENGINE:
Thrust:
sdf
2000 lbf
Chamber Pressure:
315 psi
Fuel:
Ethanol
Oxidizer:
Liquid Oxygen
Mixture Ratio:
1.2
Injector Type:
sdfs
FOF Triplet
Burn Time:
35 sec
STINGER BLOCK 1
The Akronauts’ most ambitious project yet, a cryogenic regeneratively cooled engine dubbed “Stinger”
Traditional manufacturing methods. Machined in-house at the University of Akron College of Engineering machine shop.
Utilized regenerative cooled channels & film cooling despite the manufacturing complexity
Designed and tested two injector types, an FOF triplet and a LOX-centered pintle
Hotfired 5 times from April to August of 2024
The Akronauts Rocket Design Team has once again pushed the boundaries of collegiate rocketry
The University of Akron News
STINGER BLOCK 2
Improvements: Optimized chamber design for flight vehicle perfomance. Weight reduction to overall engine assembly.
Results: Engine hardstarts led to multiple iterations of injector designs. 6 hotfire attempts from February to July of 2025 with 3 successful ignitions.
STINGER BLOCK 3
Improvements: Traditionally machined copper injector and chamber. The chamber was replaced with the Block 2 stainless steel version for the latest iteration of the engine.
Results: Hotfired 2 times within 1 week in October 2025. After a successful 35 second burn, the Akronauts are ready to put Stinger into a flight vehicle!
