Helical may refer to:
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Helix
A helix () is a shape like a corkscrew or spiral staircase. It is a type of smooth space curve with tangent lines at a constant angle to a fixed axis. Helices are important in biology, as the DNA molecule is formed as two intertwined helic ...
, the mathematical concept for the shape
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Helical engine
The Helical engine is a proposed spacecraft propulsion drive that, like other reactionless drives, would violate the laws of physics.
The concept was proposed by David M. Burns, formerly a NASA engineer at the Marshall Space Flight Center in Alaba ...
, a proposed spacecraft propulsion drive
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Helical spring
A selection of conical coil springs
The most common type of spring is the coil spring, which is made out of a long piece of metal that is wound around itself.
Coil springs were in use in Roman times, evidence of this can be found in bronze Fib ...
, a coilspring
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Helical plc
Helical plc (formerly Helical Bar plc) is a property investment and development company. Helical is based in London and a constituent of the FTSE SmallCap Index
The FTSE SmallCap Index is an index of small market capitalisation companies consis ...
, a British property company, once a maker of steel bar stock
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Helicoil
A threaded insert, also known as a threaded bushing, is a fastener element that is inserted into an object to add a threaded hole. They may be used to repair a stripped threaded hole, provide a durable threaded hole in a soft material, place a thr ...
, a mechanical thread repairing insert
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H-el-ical//, stage name for Hikaru, Japanese singer
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