Static line
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A static line is a fixed cord attached to a large, stable object. It is used for safety in construction and for low jumps and training in parachuting.
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[edit] Use in parachuting
In parachuting, a static line is a cord connecting the deployment bag of the parachute to the aircraft from which the parachutist jumps. [1] After falling away from the aircraft, this short line (rarely more than a few meters) then pulls the parachute deployment bag from its container. After that, the parachute deploys. The static line separates from the parachute, and remains in tow behind the aircraft. It is subsequently pulled in and stowed away by the jumpmaster. Static lines are used in order to make sure that a parachute is deployed immediately after leaving the plane, regardless of any actions taken by the parachutist. The static line jump is the preferred method of the U.S. Army's only airborne division - the 82nd Airborne.
This method of parachute deployment is commonly used in several ways:
- Training student skydivers [2]
- BASE jumping
- Military paratroopers jumping from very low altitudes (400+ feet or 122+ meters). [3]
Static line jumping carries risk of injury [4], which according to one study doubles when performed in combat. [5]
[edit] Use in construction
In construction, a static line is a safety measure consisting of a cable race fixed to a roof at intervals to which a safety harness may be tethered.
[edit] References
- ^ United States Army (2004). Static Line Parachuting Techniques And Training. Fredonia Books (NL). ISBN 978-1410107817
- ^ Poynter, Dan (1993). Parachuting Manual With Log for the Static Line Course. Para Publishing, ISBN 978-0915516841
- ^ Craig SC, Lee T. Attention to detail: injuries at altitude among U.S. Army Military static line parachutists. Mil Med. 2000 Apr;165(4):268-71.
- ^ Farrow GB. Military static line parachute injuries. Aust N Z J Surg. 1992 Mar;62(3):209-14.
[edit] External links
- Static Line Monthly publication since 1947 for, by and about paratroopers, glidertroopers, air assault troopers.
