PARACHUTE RIGGER HANDBOOK
 

Glossary "O"

OPENING SHOCK

The decelerating force exerted on the load following that of the snatch force. Caused by the acceleration of the canopy and the air mass associated with it.

OPENING TIME

The time elapsing between the opening of a parachute pack and the opening of the canopy to its fullest extent.

 

OPENING, PREMATURE

Any accidental opening of the parachute prior to the intended time.

OSCILLATION

Pendulumlike swinging of the suspended load beneath the inflated canopy. Usually the result of trapped air escaping under the lower lateral band.

 

OUTBOARD

Meaning facing to the outside such as a ripcord facing to the side of the jumper rather than toward the breastbone.

OVERHAND KNOT

A simple knot tied separately in each end of a piece of cord above a square, surgeonís, or other knot to prevent the end from slipping through the lower knot.

 

 
 
 
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