RU2542834C1 - Parachuter wing-m wings - Google Patents

Abstract

FIELD: aircraft engineering.

SUBSTANCE: parachuter wings consist of collapsible carcass and elastic skin. Said carcass top and rear have free zone for sling operation and safe opening of canopies. Said carcass consists of rigid frame fastened at parachuter body with articulated shoulder units and moving side beams to take up lift and to form wing leading edge.

EFFECT: decreased load at parachuter hands, longer range.

3 dwg

Description

FIELD OF TECHNOLOGY

The invention relates to the field of aviation and parachuting. The purpose of the invention is to increase the ability to maneuver, plan and move in space a paratrooper in the free fall phase.

BACKGROUND

Currently, a parachute suit is widely known - wingsuit, which is a suit with three wings in the form of membranes under the armpits and between the legs. According to the tasks to be solved and possible applications, this is the closest analogue of the described technical solution. In the normal mode, the paratrooper from the moment of "jumping" from the plane to the moment of opening of the canopy falls almost vertically or is slightly related by the wind from the initial jump point. When using a wingsuit, an athlete can get the horizontal component of the speed about 2-3 times more than the fall speed. Wingsuit membranes are made of a dense two-layer fabric, inside of which ribs are located and there are holes for air intake, with the help of which the wing is inflated by the incoming air flow, takes the required aerodynamic shape and acquires little stiffness.

Wingsuit's problem is that all the lifting force from the bearing wings falls on the athlete’s hands and, as a result, on his shoulder joints and muscles. The larger the wing area, the higher the force with which the hands are pressed to the body and bulge back. In this regard, the wing area is significantly limited and represents small triangles. Due to the small wing area and high drag, thanks to wide arms and legs, the aerodynamic quality of the wingsuit is 2-2.5. In addition, the entire wingsuit is made of flexible material, which at high speeds and with increasing wing area leads to their fluctuations and flight instability.

KNOWN ANALOGUES

Wingsuit designs are known having various shapes and wing areas, as well as the utility model RU 110609 (parachute suit), which essentially also is a wingsuit with the problems described above. The execution of the wings fixed on the human hands, as in patents RU 124483 or US 2011/0226895 A1, is not possible, since the entire increased area of the wing on the increased lever falls on the same weak shoulder joint, which is unlikely to maintain even its own weight for a long time wings on outstretched arms, and even aerodynamic forces do not have to talk.

SUMMARY OF THE INVENTION

The described technical solution is similar in principle to a wingsuit, only the metal frame gives rigidity to the wings, and aerodynamic forces fall on the frame, and then on the athlete’s body. With this solution, the wing area and permissible loads no longer depend on the strength of a person, but on the frame design: beams, struts and stretch marks. The basic version of the design (Figure 1) is a rigid frame mounted on the back of a parachutist under a parachute pack, on which side beams are mounted using hinged nodes. The frame and beams are made of thin-walled duralumin. In the open state, the beams are fixed with spacers. The wing sheathing in the basic version is a two-layer flexible material with internal ribs and air intakes, filled with air flow. The skin is tightly stretched inside the frame and partially fixed on the athlete’s suit, which gives rigidity to the wings and high flight stability.

Before the jump from the plane, the wings of the paratrooper are folded along the body behind the back (Figure 2) and do not exceed the An-2 landing door in width. After the jump, the paratrooper opens its wings, thereby pulling the skin between the frame and his body And the oncoming air stream fills the casing, creating the required aerodynamic shape and additional rigidity. During the flight on the wings, the athlete places his hands along the body, reducing drag. Flight control is carried out with the help of legs, between which in the basic version there is a third stabilizing wing, similar to the wing of the wingsuit. Leg movements also deflect the edges of the side wings. In addition, control is possible by moving the weight of the hands or by changing the opening angle of the side beams, that is, by changing the sweep. Before opening the dome or immediately after opening, the athlete folds his wings, placing the side beams behind his back along the body. The design of the central frame has free space behind the athlete’s back and shoulders for the safe opening of both domes, for throwing a “jellyfish” and enough space for the slings to be placed during landing.

The shape of the supporting frame is distinguished by the presence of two shoulder hinges necessary for folding the wings during the jump and landing, thereby resembling the outlines of the letter M, so the design has the working name WingEM (Wing-M).

Using the described wings, the parachutist is able to fly from the jump point for many kilometers (4-6 km per kilometer of altitude) until the parachute unfolds, remaining inconspicuous, fast and maneuverable. In addition, there is a theoretical possibility of finalizing the described design by significantly increasing the wing area and using additional stabilizers, with the aim of landing without a parachute.

DETAILED DESCRIPTION OF THE INVENTION

The described technical solution is simple in design and does not require expensive materials and technologies. The beam and the frame are made mainly of duralumin, the nodes and struts are steel, the fabric sheathing. The weight of the basic design is about 20 kg. The aerodynamic quality is 4-6, which is more than twice the size of the wingsuit. Due to the rigid frame and strong tension of the skin, the wing in flight is much more stable and leads to a more stable flight. The athlete’s hands are free during the flight and allow both to help stabilize the flight or maneuver, and to solve additional tasks, such as controlling the rudders, ailerons, changing the sweep of the wing, and also perform a jellyfish throw without violating the stability of the flight.

In addition to these advantages, the design has wide opportunities for improving, improving aerodynamic characteristics, modernizing controls, increasing stabilization and expanding areas of application.

IMPORTANT NOTES

Despite the advantages of the described technical solution over the wingsuit, this design is more difficult to manage and has more than 3 times more lift, which means more maneuverability and higher flight speeds, therefore, jumping with wings should be performed by athletes only after obtaining sufficient experience in jumping with a wingsuit ! Despite the increased wing area, the design in this form is not able to slow down a person’s fall to a safe speed, so landing on wings without a parachute is impossible!

Claims (1)

Parachutist wings designed to increase his maneuverability in the free fall phase, consisting of a folding frame and flexible casing, characterized in that the frame has a free zone on top and behind for sling operation and safe opening of domes, and the frame consists of a rigid frame fixed to the athlete’s body with hinged shoulder nodes, as well as movable side beams, perceiving lifting force and forming the front edge of the wing.

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