- Air scoops, aircraft (2)
- Airfoils, aircraft engine (1)
- Cooling systems, aircraft engine (4)
- Engine mount parts, aircraft (2)
- External power units, for hand inertia starters, aircraft (1)
- Jet assisted takeoff devices (JATO) (2)
- Pumps, aircraft engine (1)
- Research and development on aircraft engines and parts (19)
- Rocket motors, aircraft (2)
- Turbo-superchargers, aircraft (8)
