Skirtless Hovercraft

Terms: Skirtless Hovercraft (53), coanda effect (20700), coanda nozzles (67), venturi nozzles (1100), venturi equation (16), venturi (2490000), entrainment (527000), air amplifier (4380), venturi tube (26200), vortex tube (51700),

Terms: vortex flow (47700), vortex flow meters (8990), racine vortex flow (44), vortex meters (),

Oscillatory Flow Measurement

Boolean: "ultrasonic flow" AND vortex (7160), ultrasonic AND vortex AND gases (21500),

A Study of A Skirtless Hovercraft Design - Thesis - Edward A Kelleher

Abstract of Kelleher's Thesis

Boolean: Kelleher AND Edward (231000), "ground effect" AND lift (54300), vortices AND ground (145000), vortices AND "ground effect" (1690), venturi AND "flow rate" (59900),

Terms: maximum lift (104000), vertical takeoff (83400), split domain solutions (2), VTOL (215000),

Terms: ground effect (343000), ground effects (817000), wing in ground (11700), wing in ground effect (9820), wig vehicles (395), in ground effect (37400),

Ground Effect - Height equal span, delta drag is 1.4 percent. Height equal to span/4, delta drag is 23.5 percent.  Height equal to span/10, the reduction in induced drag is 47.6 percent.

Ground Effect and WIG Vehicles

Terms: ram pressure (28100), induced drag (41000), wing from the ground (51), thin airfoil theory (931), helicopter theory (1870),

  Lift & Lift Coefficient

Terms: lift area (22400), momentum theory (2660), rotor disk area (198), area of the wing (3520),

Helicopter Theory - Momentum Theory in Forward Flight

Terms: hovering helicopter (20300), blade element momentum theory (233), actuator disk vortex theory (2), helicopter theory (1870), thrust force (24100),

Aircraft Museum - Pictures and Data