Show PARACHUTE DROP MEANS BIG CHANCE Aviator Takes Splendid Hazard in Making Leap t WASHINGTON Oct 9 The 11 The mechanism for parac parachute ute jumping from airplanes described In a statement statement statement state state- ment of the army air service discloses I Ithe the hazards of the jumper and i wherein his feat has bas hasa a a. sporting chance of or ending In death The parachute used by aviators aviators' says the services service's statement Is folded snugly Inside a pack carried on the back The operator steps off oft the plane allows himself aa a. a couple of seconds to fall faU clear of ot his machine then pulls a wire depending over his I i sho shoulder lder This wire opens the spring doors of ot the pack and releases a small pilot chute some Bome couple of feet in diameter This spring opens I automatically and catching the rush I of ot air draws the main chute from the pack I In the top of the main Isan is isan I an automatic vent which opening to toa toa i. i a width of ot five feet when the big I parasol first unfolds gives the air compressed within a chance to escape and lessens the danger of ot blowing the thc chute apart When the fall tall has b been en checked rubber springs or shock absorbers in the vent close it in until but a small hole remains At the atmospheric pressure wherein most parachute drops from ordinary altitude are made the speed attained by the operator in his couple of ot seconds fall Is sufficient to create enough pressure under the pilot chute 1 to cause It when released to to yank the te big one ne at once from Its nack usually the operator is descending descending descending-at at normal spEed after atter falling failing less tha than fe feet t. t II However at dt t high altitudes fe-ct fe the atmosphere has not sufficient ef effect ef- ef on the pilot plot ch chute te until the and operator attained f has as fallen a great Distance a terrific speed The shock when the parachute does open is according C f. f S severe there Is quite ft sporting chance of f the Silk flying into ribbons |