Fin
Thin component or appendage attached to a larger body or structure.
- Fin500 related topics
Fish fin
Fins are distinctive anatomical features composed of bony spines or rays protruding from the body of a fish.
Pinniped
Pinnipeds (pronounced ), commonly known as seals, are a widely distributed and diverse clade of carnivorous, fin-footed, semiaquatic, mostly marine mammals in the clade Pinnipedia.
Fletching
Fletching is the fin-shaped aerodynamic stabilization device attached on arrows, bolts, darts, or javelins, and are typically made from light semi-flexible materials such as feathers or bark.
Swimfin
Swimfins, swim fins, diving fins, or flippers are finlike accessories worn on the feet, legs or hands and made from rubber, plastic, carbon fiber or combinations of these materials, to aid movement through the water in water sports activities such as swimming, bodyboarding, bodysurfing, float-tube fishing, kneeboarding, riverboarding, scuba diving, snorkeling, spearfishing, underwater hockey, underwater rugby and various other types of underwater diving.
Dorsal fin
A dorsal fin is a fin located on the back of most marine and freshwater vertebrates within various taxa of the animal kingdom.
Cetacea
Infraorder of aquatic mammals that includes whales, dolphins, and porpoises.
Infraorder of aquatic mammals that includes whales, dolphins, and porpoises.
The fluke is set horizontally on the body, unlike fish, which have vertical tails.
Foil (fluid mechanics)
Solid object with a shape such that when placed in a moving fluid at a suitable angle of attack the lift is substantially larger than the drag (force generated parallel to the fluid flow).
Solid object with a shape such that when placed in a moving fluid at a suitable angle of attack the lift is substantially larger than the drag (force generated parallel to the fluid flow).
Other types of foils, both natural and man-made, seen both in air and water, have features that delay or control the onset of lift-induced drag, flow separation, and stall (see Bird flight, Fin, Airfoil, Placoid scale, Tubercle, Vortex generator, Canard (close-coupled), Blown flap, Leading edge slot, Leading edge slats), as well as Wingtip vortices (see Winglet).
Rocket
Spacecraft, aircraft, vehicle or projectile that obtains thrust from a rocket engine.
Spacecraft, aircraft, vehicle or projectile that obtains thrust from a rocket engine.
They may also have one or more rocket engines, directional stabilization device(s) (such as fins, vernier engines or engine gimbals for thrust vectoring, gyroscopes) and a structure (typically monocoque) to hold these components together.