Vertical wind tunnel frefall simulator

• Main Authors: MORT KENNETH W, KITCHEN WILLIAM J, METNI N. ALAN, EASTLAKE CHARLES N, PALMER MICHAEL J
• Format: Patent
• Language: English; Slovenian
• Published: 28.11.2014
• Subjects: AGRICULTURE; AIRCRAFT; AMUSEMENTS; ANIMAL HUSBANDRY; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSIONTRANSMISSIONS IN AIRCRAFT; AVIATION; CARE OF BIRDS, FISHES, INSECTS; CHUTES; COSMONAUTICS; EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FISHING; FLYING SUITS; FORESTRY; GAMES; HUMAN NECESSITIES; HUNTING; MERRY-GO-ROUNDS; NEW BREEDS OF ANIMALS; PARACHUTES; PERFORMING OPERATIONS; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; ROCKING-HORSES; SIMILAR DEVICES FOR PUBLIC AMUSEMENT; SPORTS; SWINGS; SWITCHBACKS; TRANSPORTING; TRAPPING

A cable designed for use in applications when it is advantageous to reduce the amount of aerodynamic drag in air caused by the cable without the cable being formed from a multiplicity of a plurality of elongated metal elements twisted together, one of said outer elements having a cross-section which is different to all other outer elements, said all other outer elements defining an outer surface of the line which has a predetermined circumferential length, said one element having a cross-sectional size and shape such that it projects or indents from said outer surface a distance above or below said predetermined circumferential length so as to form a helical ridge or grove around the line, thereby reducing the aerodynamic drag of the cable in air.