Helical may refer to:
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Helix
A helix (; ) is a shape like a cylindrical coil spring or the thread of a machine screw. 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 for ...
, the mathematical concept for the shape
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Helical engine
Helical may refer to:
* Helix, the mathematical concept for the shape
* Helical engine, a proposed spacecraft propulsion drive
* Helical spring, a coilspring
* Helical plc
Helical plc (formerly Helical Bar plc) is a Central London development-fo ...
, a proposed spacecraft propulsion drive
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Helical spring
A tension coil spring
A coil spring is a mechanical device that typically is used to store energy and subsequently release it, to absorb shock, or to maintain a force between contacting surfaces. It is made of an elastic material formed into the ...
, a coilspring
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Helical plc
Helical plc (formerly Helical Bar plc) is a Central London development-focused real estate business and a constituent of the FTSE SmallCap Index.
History
The Helical Bar and Engineering Company Limited was incorporated as a limited company on 3 J ...
, 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 t ...
, a mechanical thread repairing insert
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H-el-ical//, stage name for Hikaru, Japanese singer
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