Canopy Relative Work
Photo by Pat Hayter
There are two major categories of CRW formations:
- Vertical formations : Canopies are either stacked or planed one beneath the other. All grips should be on the center cell.
- Off-set formations : one or more docks and grips are on end-cells. These formations include diamonds, boxes and stair-steps.
USPA BSRs recommends a beginner should have the following qualifications before engaging in CRW:
- At least 20 jumps on a ram-air canopy.
- Thorough knowledge of canopy flight characteristics, to include riser maneuvers and an understanding of relative compatibility of various canopies.
- Demonstrate accuracy capability of consistently landing within five meters of a target.
Initial training would be conducted with two jumpers - the beginner and an Instructor experienced in CRW. The instructions should include lessons in basic docking and break-off procedures as well as emergency procedures.
USPA BSRs has the following recommendations on equipment:The following items are essential for safely doing CRW:
- hook knife -- necessary for resolving entanglements
- ankle protection -- adequate socks prevent abrasion from canopy lines. If boots are used, cover any exposed metal hooks
- short bridle cords -- short, single attachment point bridlecords are essential to reduce the danger of entanglement. Retracting bridle pilot chute systems are desirable
- cross connectors -- are essential for building planes. These should be connected between front and rear risers only.
- altimeter -- provides altitude information for dock, abort and entanglement decisions
- protective headgear -- must allow adequate hearing capability for voice commands, in addition to collision protection
- soft toggles -- provide less possibility of entanglement than hard toggles and better flight control
- trim tabs (go toggles) -- helpful for equalizing decent ratesand increasing control envelope
- cell crossporting (two rows) -- is recommended (when doneper manufacturer's specs) to minimize the likelihood of canopy collapse
- cascades -- recommended to be removed from the two centerA lines.
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