RU2224692C2 - Life-saving appliance of helicopter external store - Google Patents

Abstract

FIELD: aviation; evacuation of people from ice-floes, mountains, uninhabited regions, tall house roofs which are afire, islands in mud flows and flood. SUBSTANCE: proposed appliance on external store of helicopter 1 is placed on solid surface by its bottom 2. When lines 4 are slackened, side wall 3 lowers under action of its weight forming passage for evacuation of people. Bearing framework 6 with casing 7 secured on it is used for protection of people in life-saving appliance against flow of air from helicopter rotor. During ascent of helicopter 1, lines 4 are tightened up raising side wall 3 till its upper contour gets in contact with casing 7 forming enclosed space protected against external factors (wind, fire, smoke). After raising of side wall 3, helicopter 1 raises life-saving appliance by load line 8 connecting flexible member 5 of external store of helicopter 1 with bearing framework 6. After transportation of life-saving appliance on helicopter external store, it is placed on solid surface for evacuation of people. Line 8 and flexible member 5 are slackened first, after which lines 4 are released, thus making side wall 3 lower opening passage from life-saving appliance. EFFECT: enhanced safety of people during transportation. 2 cl, 2 dwg

Description

 The invention relates to aviation and can be used to evacuate people in distress on torn ice floes, in mountains, uninhabited areas, on the roofs of high-rise buildings, engulfed in fire, on islands of solid land during mudflows and floods, etc.

 A helicopter rescue device is known (U.S. Patent 4138077, CL NKI 244.118 p, 1977), containing a base in the form of a solid disk, to which a wall mesh structure is attached with a layout system on the surface of an object from which people and cargo are saved. When lifting the rescue device from the surface, a special suspension system ensures the safety of transporting people and goods on the external suspension of the helicopter.

 Also known is the rescue basket adopted for the prototype (US Patent 4,564,161, class NKI 244.137 p, 1983), containing a mesh enclosing structure in the form of a basket of flexible material and slings that secure the basket over the upper rim to the helicopter's external suspension system. When lowering onto a hard surface, the basket is folded in the vertical direction, and when lifting, it again takes the form of a basket in which evacuated people can be transported.

 The disadvantage of the described devices is the blowability of rescue devices, which at low temperatures can cause additional hypothermia of evacuated people. In the conditions of a developed tree-shrub cover, the described devices will cling to the basket obstacles by the cells of the basket, which will complicate the rescue operation. When people are evacuated from the fire zone, the described devices will not be able to protect victims from exposure to fire and smoke through the cells of the rescue basket.

 One of the tasks of improving rescue devices on the external suspension of a helicopter is to eliminate the noted drawbacks and increase the safety of evacuated people during transportation due to their isolation from adverse environmental factors.

 The technical result that allows you to solve this problem is achieved by the fact that the rescue device on the external suspension of the helicopter, containing the enclosing structure in the form of a bottom with a side wall made with the possibility of folding in the vertical direction under the influence of gravity while supporting it from the bottom and folding in the same direction when it is suspended by the upper part, and the slings connecting the upper part of the side wall with the external suspension of the helicopter, according to the invention further comprises a supporting frame with fixed nnym casing thereon, wherein the cladding is made of solid material and constitutes together with the housing side wall in unfolded closed volume.

 Moreover, according to the invention, the support frame is connected by a cargo sling to the external suspension of the helicopter.

 The invention is illustrated by drawings, where Fig. 1 shows a rescue device on the external suspension of a helicopter mounted on a solid surface with an open side wall, and Fig. 2 shows a rescue device on the external suspension of a helicopter in flight.

 The rescue device on the external suspension of the helicopter 1 contains a bottom 2 with a side wall 3 attached to it, slings 4 connecting the upper part of the side wall 3 with the flexible element 5 of the external suspension of the helicopter 1, a support frame 6 with a casing 7 fixed on it in the upper part and lower - bottom 2 and cargo sling 8, connecting the supporting frame 6 with the flexible element 5 of the external suspension of the helicopter 1.

 The rescue device on the external suspension of the helicopter operates as follows. When approaching the helicopter 1 to the location of the evacuated people, the rescue device on the external suspension of the helicopter 1 is installed with the bottom 2 on a hard surface. When weakening the slings 4, the side wall 3 under the influence of its weight falls, forming a passage on all sides for the evacuation of people. The rescuer located in the rescue device coordinates his actions with the crew using radio communications. The support frame 6 with the casing 7 fixed on it protects the people in the rescue device from the air flow from the propeller side of the helicopter 1. When lifting the helicopter 1, the slings 4 are pulled and raise the side wall 3 until its upper contour closes with the casing 7, forming with it closed volume, protected from external influences (wind, fire, smoke, etc.). Thus, evacuees are isolated from adverse environmental influences, which increases their chances of salvation. After lifting the side wall 3, the helicopter 1 lifts the rescue device behind the cargo line 8, connecting the flexible element 5 of the external suspension of the helicopter 1 with the supporting frame 6. After transporting the rescue device on the external suspension of the helicopter 1, it is mounted on a hard surface at the landing site of the evacuated people. At the same time, the cargo sling 8 and the flexible element 5 first weaken, and only after that the slings 4 begin to lower, and with them the side wall 3 is folded under the influence of its weight, opening the exit from the rescue device.

 Thus, the desired technical result is achieved - the safety of transportation of evacuated people is improved due to their isolation from adverse environmental conditions.

Claims (2)

1. The rescue device on the external suspension of the helicopter, containing the enclosing structure in the form of a bottom with a side wall, made with the possibility of folding in the vertical direction under the action of gravity while supporting it from the bottom and folding in the same direction when it is suspended from the upper part, and slings, connecting the upper part of the side wall with the external suspension of the helicopter, characterized in that the device further comprises a supporting frame with a casing fixed on it, while the enclosing structure is made of flat material and together with the casing with the unfolded side wall of the closed volume. 2. The rescue device according to claim 1, characterized in that the supporting frame is connected by a cargo sling to the external suspension of the helicopter.

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