Koda Mitsuhashi

Mechanical engineer. I design hardware for renewable energy. The part I like most is working out why something isn't quite working yet.

Isometric section view of the full-scale inline load absorber, showing roller screw, flywheel and generator inside a sealed tube
Regenerative Mooring Load Absorber, full-scale design in section. Overall length about 2 m.

Projects

  • Isometric section view of the full-scale inline load absorber, showing roller screw, flywheel and generator inside a sealed tube

    Regenerative Mooring Load Absorber

    An inline inerter-spring-damper device that cuts snap loads on wave energy converter mooring lines and harvests energy instead of burning it as heat.

    DOE SURE Program, Energy Harvesting and Mechatronics Research Lab, Prof. Lei Zuo, University of Michigan

  • The LOx fill valve covered in frost during a cryogenic flow test, nitrogen vapour venting around it

    LOx Fill Valve & Quick Disconnect

    Pneumatically actuated cryogenic fill valve and separating QD plug for a 24 ft liquid bipropellant rocket.

    Michigan Aeronautical Science Association (MASA), University of Michigan

  • SolidWorks assembly of the double-iris feed mechanism, showing the two stacked shutter stages and the stepper drive

    Badminton Shuttlecock Launcher

    A self-directed machine design project: a court-portable feeder that serves a repeatable shot, built around a single-motor iris feed mechanism.

    Personal project

  • ASTM D638 Type IV tensile specimens after failure, showing necking in the virgin PLA gauge length

    Forks to Filament

    Turning post-consumer compostable cutlery into 3D printing filament, and testing whether the parts are actually usable.

    RISE Program, Prof. Dan Cooper's lab, University of Michigan

  • Four shutter designs that open under high heat, each shown as a dimensioned pattern, an assembled sample, and a side view photographed at six points across a heating and cooling cycle from 0 to 10.5 minutes, with actuation height marked

    Light-Actuated Shutters

    A graphene, PDMS and aluminium trilayer that opens and closes itself under light, and six blade geometries to find out what drives the motion.

    UROP, Prof. Young Geun Park's lab, University of Michigan

Also