Category
page 1Propellers

propeller
thumb|upright=1.35|A 'right-handed' propeller on a merchant vessel, which rotates clockwise to propel the ship forward. The man's hand rests on the trailing edge.
thumb|upright=1.35|Propeller of Pratt & Whitney Canada PW100 [[turboprop mounted on Bombardier Q400]]
aircraft propeller
aircraft component which converts engine torque into forward thrust
manoeuvring thruster
transversal propulsion device built in to some ships and boats
Voith Schneider Propeller
marine propulsion system
contra-rotating propellers
two-propeller design for improving low-airspeed maneuverability
ducted propeller
Marine propeller with a non-rotating nozzle
variable pitch propeller
propeller with blades that can be rotated to control their pitch while in use
constant speed propeller
sterndrive
right|thumb|300px|The outdrive unit of a boat with sterndrive
A sterndrive or inboard/outboard drive (I/O) is a form of marine propulsion which combines inboard power with outboard drive. The engine sits just forward of the transom while the drive unit (outdrive or drive leg) lies outside the hull.
spinner
aircraft component
Momentum theory
mathematical model in fluid dynamics
counter-rotating propellers
Propellers that rotate on opposite directions
toroidal propeller
toroid-shaped propeller for higher efficiency and lower noise
blade element theory
mathematical process by William Froude