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Daimon Lab (Space Development Engineering Research Group)
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A lab that studies spacecraft propulsion systems and combustion and thermal flow inside engines.
AboutAbout the lab
Aiming for high-performance, safe space propulsion technology.
The Daimon Lab (Space Development Engineering Research Group) studies propulsion systems for spacecraft and rockets, as well as combustion and heat flow inside engines.
The lab investigates how cryogenic propellants spray out, break up into fine droplets, and mix; how they ignite and burn; and how to manage heat with evaporating liquid films.
By combining experiments with modeling and numerical analysis, the lab aims to realize high-performance, safe space propulsion technology.
Key terms
- Propellant
- Fuel and oxidizer, often liquid, used in rocket and spacecraft engines. This lab also works with cryogenic ones.
- Atomization
- The phenomenon in which a sprayed liquid breaks up into fine droplets. It affects how fuel and oxidizer mix and burn.
- Evaporating liquid film
- A thin film of liquid covering a wall. It removes heat as it evaporates, so it is used for engine thermal management.
ResearchResearch themes
The Daimon Lab studies propulsion systems for spacecraft and rockets, as well as combustion and thermal flow inside engines. Its subjects include jets, atomization, and mixing of cryogenic propellants, ignition and combustion, thermal management with evaporating liquid films, and explosion safety of liquid hydrogen. Through experiments, modeling, and numerical analysis, the lab aims to realize high-performance, safe space propulsion technology.
*Illustrative imageJets and Atomization of Cryogenic Liquids
The lab uses magnified high-speed imaging to study how cryogenic liquids spray out and break up into fine droplets. It also works on clarifying and modeling the surface waves and atomization that occur when a liquid column interacts with a flame.
*Illustrative imagePropellant Mixing and Ignition
Using visualization experiments and models, the lab studies how jets of two propellants collide and mix, and the ignition timing of self-igniting propellants. It also works on estimating the mechanism of hard starts at thruster startup.
*Illustrative imageWall Cooling by Evaporating Liquid Films
The lab directs liquid jets onto a hot wall and experimentally studies how the liquid film covering the wall removes heat while evaporating and boiling. It also examines the effects of wall roughness and pulsed injection, and applies the results to engine thermal management.
*Illustrative imagePropulsion System Simulation and Fault Diagnosis
The lab develops simulations that reproduce an entire spacecraft propulsion system with numerical models, and validates them against combustion test results. It also works on fault diagnosis using data generated by the simulations.
MembersFaculty
- ProfessorYu Daimon
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “A J-2 engine undergoes static firing 6975832” NASA / Public domain (cropped)
- Jets and Atomization of Cryogenic Liquids: “Liquid Nitrogen Tank” Toby Hudson / CC BY-SA 3.0 (cropped)
- Propellant Mixing and Ignition: “Rocket Engine TD-339” Steve Jurvetson / CC BY 2.0 (cropped)
- Wall Cooling by Evaporating Liquid Films: “Heat-transmittance-means2” Kmecfiunit, cmglee / CC BY-SA 4.0 (cropped)
- Propulsion System Simulation and Fault Diagnosis: “Hot Fire Test of SLS Rocket Core Stage (NHQ )” Robert Markowitz / Public domain (cropped)
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