Hydraulic system
Hydraulic system for aircraft
Hydraulic torque restraint system
Hydraulically controlled fluidstream driven waterborn vehicle
Hydraulically controlled, fluid-stream driven vehicle
Hydraulically operated air borne rotor craft
Hydraulically operated aircraft with a retractable propeller
Hydraulically operated winch units
Hydrodynamic lift for flying boats or sea planes
Hydrodynamic ram attenuating fuel tank
Hydrofoils and airfoils
Hydrogen fueled blended wing body ring tank
Hydrogen lighter-than-air ship
Hydrogen powered aircraft
Hydrogen powered aircraft
Hydrogen powered toy rocket utilizing hydrogen from the...
Hydrogen powered toy rocket utilizing hydrogen from the...
Hydrogen-fueled spacecraft
Hydrostatic sidestick coupling
Hypersonic and orbital vehicles system