RU2737456C1 - Device for thermal cutting of reserve parachute closing loop - Google Patents

Abstract

FIELD: parachute technology.

SUBSTANCE: device relates to parachute equipment and can be used in devices for forced opening of parachute pack and introduction of reserve parachute. Device for thermal cutting of the reserve parachute closing loop contains a body and a connecting cable. Device additionally includes heating element, two connecting wires connecting heating element with connecting cable and adjusting bolt. At the same time the body on the side part is equipped with a hole for the closing loop and is drilled from below. Diameter of the drilled hole is equal to the diameter of the adjusting bolt, and the upper part of the adjusting bolt is coated with a thermo-isolate. Heating element is placed and fixed in the hole for the closing loop. Two connecting wires are fixed to the connecting cable and the heating element. Closing loop is passed into hole for closing loop. Adjusting bolt is swirled in hole drilled from below and fixes closing loop.

EFFECT: disclosed invention provides higher operational reliability of the device by reducing the probability of incomplete cutting of the closing loop of the reserve parachute and the probability of unauthorized operation of the device, longer service life of the device, lower total cost of servicing the device.

1 cl, 3 dwg

Description

The invention relates to parachute technology and can be used in devices for forced deployment of the introduction of a reserve parachute.

Known for its practical use is the device for cutting the loop of the reserve parachute stitching in the Vigil Cuatro belay device containing: the device body, the powder charge, the cutter, the connecting cable.

The disadvantages of this type of device for cutting the stitching loop of the reserve parachute are:

- the potential for unauthorized operation of the device due to the lack of grounding in the device and the accumulation of static electricity;

- the lack of the possibility of continuous monitoring of the serviceability of the device for cutting the loop of the reserve parachute stitching;

- the possibility of not completely cutting the reserve parachute stitching loop.

The closest in technical essence is (https://www.cypres.aero/wp-content/uploads/2016/07/CYPRES-2-users-guide-Russian-08-2015.pdf) a reserve parachute loop cutting device ( squib) in the Cypres 2 belaying device containing: squib body, powder charge, cutter, connecting cable.

The disadvantages of this type of device for cutting the stitching loop of the reserve parachute are:

- no possibility of reuse after a single use;

- the need to involve trained specialists in the event of a procedure for replacing the squib;

- the high cost of replacing the squib, which is 1/3 of the cost of the insuring device;

- the possibility of unauthorized operation of the device due to the absence of grounding in the device and the accumulation of static electricity;

- the lack of the possibility of continuous monitoring of the serviceability of the device for cutting the loop of the reserve parachute stitching;

- the potential for incomplete cutting of the reserve parachute stitching loop.

The objective of the invention is to increase the operational reliability of the device by reducing the likelihood of incomplete cutting of the closing loop of the reserve parachute and the likelihood of unauthorized operation of the device, increasing the service life of the device, reducing the total cost of maintaining the device.

The required technical result is achieved by the fact that in the device containing: a housing and a connecting cable are introduced: a heating element, two connecting wires connecting the heating element with a connecting cable, an adjusting bolt, while the powder charge and a cutter are removed from the housing (2), the housing (2) on the lateral part it is equipped with a hole (5) for a locking loop and drilled from below, to a depth L2, while:

L ₂ = 1/2 * L ₃

where, L ₂ - the depth of the drilled hole;

L ₃ - the length of the entire body;

in this case, the diameter of the drilled hole is equal to the diameter of the adjusting bolt (7), the upper part of the adjusting bolt (7) is covered with thermal insulation, the heating element (4) is placed and fixed in the hole for the locking loop (5), to the connecting cable (1) and the heating element (4) two connecting wires (3) are fastened, a locking loop (6) is threaded into the hole for the locking loop (5), the adjusting bolt (7) is screwed into the hole drilled from the bottom of the housing (2) and fixes the locking loop (6). The length of the connecting wires is determined in accordance with the expression:

L = L ₁

where, L is the length of the connecting wires;

L ₁ is the distance from the top of the housing to the heating element.

The essence of the invention is illustrated by a drawing, where FIG. 1, fig. 2 and FIG. 3 shows a possible variant of constructing a device for thermal cutting of the reserve parachute stitching loop, which contains:

1.connecting cable;

2. body;

3. connecting wires;

4. heating element;

5. hole for locking loop;

6. locking loop;

7. adjusting bolt.

The device for thermal cutting of the reserve parachute loop works as follows: when laying the parachute, the locking loop (6) is threaded through the hole for the locking loop (5), the adjusting bolt (7), the locking loop (6) is pressed against the heating element (4), when when the safety device is triggered, a signal is sent to the processor unit, which, using a connecting cable (1) and connecting wires (3), supplies voltage to the heating element (4), as a result of which the heating element (4) is heated to the temperature at which the material is destroyed from of which the locking loop (6) is made, the heating element (4) destroys the locking loop (6) at the point of contact, after which the spring of the pilot chute is released and it activates the reserve parachute.

Thus, thanks to the introduction of new elements and connections, the required technical result is achieved - an increase in the operational reliability of the device by reducing the likelihood of incomplete cutting of the closing loop of the reserve parachute and the likelihood of unauthorized operation of the device, increasing the service life of the device, and reducing the total cost of maintaining the device.

INFORMATION SOURCES

1. RU No. 2033946 1995

2. RU №135618 2013

3. RU 2112709 1998

4. RU 2024420 1994

5. RU 1793646 1995

6. RU 2023632 1994

7. RU 2040440 1995

8. RU 22928 2002

Claims (8)

A device for thermal cutting of the reserve parachute stitching loop, containing a body and a connecting cable, characterized in that a heating element is additionally introduced into it, two connecting wires connecting the heating element with a connecting cable, an adjusting bolt, while the body (2) is provided with a hole on the side part (5) for the stitching loop and drilled from below to a depth of L ₂ , while: L ₂ = 1/2 * L ₃ , where L ₂ is the depth of the drilled hole; L ₃ - the length of the entire body; in this case, the diameter of the drilled hole is equal to the diameter of the adjusting bolt (7), the upper part of the adjusting bolt (7) is covered with thermal insulation, the heating element (4) is placed and fixed in the hole for the locking loop (5), to the connecting cable (1) and the heating element ( 4) two connecting wires are fixed (3), a locking loop (6) is threaded into the hole for the locking loop (5), the adjusting bolt (7) is screwed into the hole drilled from the bottom of the body (2) and fixes the locking loop (6), while the length connecting wires is determined in accordance with the expression: L = L ₁ , where L is the length of the connecting wires; L ₁ is the distance from the top of the housing to the heating element.

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