Parachute harness release and aircraft

Abstract

The application discloses a parachute harness release device and an airplane. A first explosion cavity and a rope passing channel are formed on a suspension point joint seat. An explosion pin comprises a rope winding end and an explosion end. The explosion end is provided with a sealing part. The rope winding end passes through the rope passing channel. The connection part between the rope winding end and the explosion end and the explosion end are arranged in the first explosion cavity. A sealed first air chamber is formed between the explosion pin and the first explosion cavity near the rope passing channel. A tensioning connecting piece is arranged on the suspension point joint seat and connected with the rope winding end. An igniter is arranged on the explosion end and used for releasing gas into the first air chamber. The tensioning connecting piece is disconnected, the rope winding end moves out of the rope passing channel, and a harness inner loop wound on the rope winding end is released. The parachute harness release device reserves a part of the length of the parachute rope. The parachute rope is released twice. The acceleration of the airplane and the pilot on the airplane when the parachute slows down is reduced. The possibility of injury is reduced.

Description

Technical Field

[0001] This invention relates to the field of whole-aircraft parachute technology, and more particularly to a parachute sling release device and an aircraft. Background Technology

[0002] A whole-aircraft parachute system is a pilot-controlled parachute escape system designed to save passengers and the aircraft in emergency situations where no other emergency procedures can guarantee safety. The parachute is typically connected to slings on the aircraft via several straps. The ability of these straps to be pulled taut determines the aircraft's attitude after deployment and the distribution of forces exerted by the parachute on the aircraft, thus affecting the occupants' chances of survival.

[0003] The design of a whole-aircraft parachute system must take into account the aircraft's structural shape and the crew's tolerance. When the parachute is deployed, if all the parachute lines are released at once, the descent speed is high, and the aircraft and the pilots on board will experience a large acceleration (G-force) during parachute deceleration. Furthermore, the pilots will not have enough time to adjust the aircraft's descent attitude. Summary of the Invention

[0004] To address the aforementioned problems, this invention proposes a parachute sling release device and an aircraft.

[0005] The technical solution adopted in this invention is as follows:

[0006] This application provides a parachute sling release device, including a sling connector, a tensioning connector, an explosive pin, and an igniter;

[0007] The lifting point connector seat has a first explosion cavity and a rope passage for the paracord sling to pass through;

[0008] The explosive pin includes a rope-wound end and an explosive end connected to the rope-wound end. A sealing portion is formed on the outer periphery of the explosive end. The rope-wound end passes through the lifting point connector seat and is arranged across the rope-threading channel. The explosive end is located in the first explosive cavity. The connection between the explosive end and the rope-wound end is located in the first explosive cavity, and the sealing portion of the explosive end contacts the side wall of the first explosive cavity, so that a sealed first air chamber adjacent to the rope-threading channel is formed between the explosive pin and the first explosive cavity.

[0009] The tensioning connector is mounted on the lifting point joint seat and connected to the side of the rope winding end away from the explosive end. The tensioning connector is used to fix the rope winding end on the lifting point joint seat.

[0010] The igniter is disposed on the explosive end, and the igniter has a gas outlet that communicates with the first gas chamber. The igniter is used to release gas into the first gas chamber.

[0011] The explosive pin has a rope-locking position and a rope-releasing position:

[0012] When the igniter does not release gas into the first gas chamber, the explosive pin is in the rope locking position. At this time, the rope winding end passes across the rope threading channel and is fixed to the suspension point connector seat through the tensioning connector. The rope winding end is used to wind and gather the inner circuit of the parachute sling.

[0013] When the igniter is activated and gas is released into the first gas chamber, the pressure inside the sealed first gas chamber increases to the point that the tensioning connector fails to connect, which drives the explosive end to move away from the rope end. At the same time, the rope end moves out of the rope passage, and the inner loop of the sling wrapped on the rope end is released. At this time, the explosive pin is in the rope release position.

[0014] In actual use, based on the time of the first opening of the parachute and release of the parachute harness, an electrical signal is sent to the igniter at a time interval. When the igniter receives the electrical signal, it quickly releases a large amount of gas into the first gas chamber, and forms sufficient pressure in the first gas chamber to drive the explosive pin to move away from the rope end away from the explosive pin, thereby causing the tensioning connector to fail and the rope end to move out of the rope passage. At the same time, the inner loop of the harness wrapped on the rope end is released.

[0015] By setting time intervals and using electrical signals to control the working time of the explosive pin and tensioning connector, the pilot can be conveniently assisted in opening and adjusting the parachute's attitude during landing, ensuring landing safety. At the same time, releasing the parachute harness in two stages can reduce the acceleration of the aircraft and the pilot during parachute deceleration.

[0016] In actual use, the outer peripheral sidewall of the rope-winding end, the outer peripheral sidewall of the explosion end, the end face of the sealing part near the rope-winding end, and the inner peripheral sidewall of the first explosion chamber form a sealed first gas chamber.

[0017] Furthermore, a second explosion cavity is formed inside the explosion end, and the igniter is disposed inside the second explosion cavity. A relatively sealed second gas chamber is formed between the outer side of the igniter and the inner side of the second explosion cavity.

[0018] The explosion end has an airflow channel connecting the second air chamber and the first air chamber.

[0019] Furthermore, the igniter includes a gas generator and a plug connected to the gas generator, the plug being used to achieve an electrical connection;

[0020] The gas generator is equipped with the gas outlet. The gas generator is an electrical component. When an explosion command is received, the gas generator releases gas into the first gas chamber through the gas outlet.

[0021] Furthermore, the gas generator is fixed to the end of the explosion end away from the rope-winding end by fasteners;

[0022] Alternatively, the gas generator can be secured by setting a retaining ring at the end of the explosion point away from the rope end.

[0023] Furthermore, the lifting point connector includes a base plate and a first wall and a second wall disposed on the base plate, the first wall and the second wall being spaced apart to form the rope threading channel;

[0024] The first wall has a first hole, which is a stepped hole with a large hole section and a small hole section. The large hole section is located on the side close to the second wall and is used to attach the rope end of the explosive pin.

[0025] Furthermore, the tensioning connector includes a cover, a break section, and a connecting section connected in sequence. The outer diameter of the cover is larger than the diameter of the small hole section, and the outer diameter of the break section is smaller than the outer diameter of the cover and / or the connecting section.

[0026] The cover is disposed on the side of the first wall away from the second wall, and the broken section and the connecting section pass through the small hole section and are fixed to the rope end of the explosive pin.

[0027] When the igniter introduces gas into the first gas chamber, the broken section of the tensioning connector is subjected to a tensile force along the axial direction of the explosive pin under the action of the explosive pin, causing the tensioning connector to tend to move away from the cover. Meanwhile, the cover of the tensioning connector abuts against the first wall. When the tensile force on the broken section exceeds its tensile strength, the broken section breaks, causing the explosive pin to move away from the cover.

[0028] Furthermore, the rope-wound end of the explosive pin has a connecting hole, the connecting section has an external thread, the connecting hole has an internal thread, and the tensioning connector is fixed to the explosive pin by a threaded connection.

[0029] Alternatively, the connecting hole may be a light hole, and the connecting segment may be interference-fitted with the connecting hole.

[0030] In practical use, the rope-winding end of the explosive pin can also have external threads, the connecting section can have a connecting hole, and the connecting hole can have internal threads. The tensioning connector and the explosive pin can be fixed by threaded connection.

[0031] Furthermore, the parachute harness release device also includes a first sealing element, the second wall forming the first explosion chamber on the side away from the first wall, the second wall having a second hole communicating with the first explosion chamber, the end of the rope end near the explosion end passing through the second hole, and the first sealing element being disposed between the rope end and the second hole to prevent gas leakage from the sealed first air chamber at the connection between the rope end and the second wall.

[0032] In actual use, the connecting hole at the rope winding end is a countersunk hole, or the connecting hole at the rope winding end is a through hole, and the tensioning connector is sealed to the rope winding end of the explosive pin.

[0033] Furthermore, the parachute harness release device also includes a fixing pin and a cotter pin. The fixing pin is sequentially disposed on the first wall and the second wall and cooperates with the cotter pin. The fixing pin is used to wind the outer loop of the parachute harness.

[0034] Furthermore, the parachute harness release device also includes a second seal and a stop ring, the second seal being disposed between the first explosion chamber and the sealing portion to prevent air leakage.

[0035] The stop ring is located at the end of the first explosion chamber away from the first wall. The inner diameter of the stop ring is larger than the outer diameter of the igniter and the body of the explosion end, while the inner diameter of the stop ring is smaller than the outer diameter of the sealing part.

[0036] The outer diameter of the explosive end of the explosive pin is larger than the outer diameter of the rope-winding end;

[0037] When the explosive pin is in the rope-releasing position, the stop ring is used to prevent the explosive pin from disengaging from the lifting point connector seat.

[0038] This application also provides an aircraft, including an aircraft body, a parachute, and a parachute strap release device, wherein the parachute is mounted on the aircraft body via the parachute strap release device;

[0039] The parachute sling release device is one of the parachute sling release devices described above.

[0040] By providing an aircraft with a controllable parachute sling release device, the aircraft and its occupants can land smoothly, reducing the possibility of injury.

[0041] The beneficial effects of this invention are:

[0042] The parachute harness release mechanism includes a pre-installed length of parachute lines, allowing for a two-stage release: the harnesses are released once when the parachute opens, and a second release occurs when the explosive pin is in the release position. This reduces the acceleration experienced by the aircraft and pilots during parachute deceleration, while also assisting the pilot in opening and adjusting the parachute's deployment attitude during descent, ensuring a smooth landing for the aircraft and occupants and minimizing the possibility of injury. Attached Figure Description

[0043] Figure 1 This is a cross-sectional view of the parachute harness release device in the rope locking position according to an embodiment of the present invention;

[0044] Figure 2 This is a cross-sectional view of the parachute harness release device in the rope-releasing position according to an embodiment of the present invention.

[0045] Figure 3 This is an axial side view of the parachute harness release device in the rope locking position according to an embodiment of the present invention;

[0046] Figure 4 This is a cross-sectional structural schematic diagram of the lifting point connector seat according to an embodiment of the present invention;

[0047] Figure 5 yes Figure 1 A magnified schematic diagram of part A in the diagram.

[0048] The labels for the attached figures are as follows:

[0049] 1. Lifting point connector; 101. Rope threading channel; 102. First explosion chamber; 110. Base plate; 120. First wall; 121. First hole; 130. Second wall; 131. Second hole; 2. Tensioning connector; 210. Cover; 220. Fracture section; 230. Connecting section; 3. Explosive pin; 310. Rope winding end; 320. Explosive end; 321. Sealing part; 322. Second explosion chamber; 323. Airflow channel; 4. Igniter; 410. Gas generator; 420. Plug; 5. Snap ring; 6. First seal; 7. Fixing pin; 8. Cotter pin; 9. Second seal; 10. Stop ring; 100. First gas chamber; 200. Second gas chamber. Detailed Implementation

[0050] The present invention will now be described in detail with reference to the accompanying drawings.

[0051] like Figures 1-5 As shown, this application provides a parachute sling release device, including a sling connector 1, a tensioning connector 2, an explosive pin 3, and an igniter 4;

[0052] The lifting point connector 1 has a first explosion cavity 102 and a rope passage 101 for the paracord sling to pass through;

[0053] The explosive pin 3 includes a rope-winding end 310 and an explosive end 320 connected to the rope-winding end 310. A sealing part 321 is formed on the outer periphery of the explosive end 320. The rope-winding end 310 passes through the lifting point connector seat 1 and is arranged to cross the rope passage 101. The explosive end 320 is located in the first explosive cavity 102. The connection between the explosive end 320 and the rope-winding end 310 is located in the first explosive cavity 102, and the sealing part 321 of the explosive end 320 contacts the side wall of the first explosive cavity 102, so that a sealed first air chamber 100 adjacent to the rope passage 101 is formed between the explosive pin 3 and the first explosive cavity 102.

[0054] The tensioning connector 2 is installed on the lifting point connector seat 1 and connected to the side of the rope end 310 away from the explosion end 320. The tensioning connector 2 is used to fix the rope end 310 on the lifting point connector seat 1.

[0055] Igniter 4 is installed on the explosion end 320. Igniter 4 has a gas outlet that is connected to the first gas chamber 100. Igniter 4 is used to release gas into the first gas chamber 100.

[0056] Explosive pin 3 has a rope locking position and a rope releasing position:

[0057] like Figure 1 As shown, when the igniter 4 does not release gas into the first gas chamber 100, the explosive pin 3 is in the rope locking position. At this time, the rope winding end 310 passes through the rope channel 101 and is fixed to the suspension point connector seat 1 through the tensioning connector 2. The rope winding end 310 is used to wind and gather the inner circuit of the parachute sling.

[0058] like Figure 2 As shown, when the igniter 4 is activated and gas is released into the first gas chamber 100, the pressure inside the sealed first gas chamber 100 increases to the point that the tensioning connector 2 fails to connect, which will drive the explosive end 320 to move away from the rope end 310. At the same time, the rope end 310 moves out of the rope passage 101, and the inner circuit of the sling wrapped on the rope end 310 is released. At this time, the explosive pin 3 is in the rope release position.

[0059] In actual use, based on the time when the parachute is first opened and the parachute harness is released, an electrical signal is sent to the igniter 4 at a time interval. When the igniter 4 receives the electrical signal, it quickly releases a large amount of gas into the first gas chamber 100 and creates sufficient pressure in the first gas chamber 100. This pressure drives the explosive pin 3 to move away from the rope end 310, causing the tensioning connector 2 to fail and the rope end 310 to move out of the rope passage 101. At the same time, the inner loop of the harness wrapped on the rope end 310 is released.

[0060] By setting time intervals and using electrical signals, the working time of the explosive pin 3 and the tensioning connector 2 can be controlled, which can conveniently assist the pilot in opening and adjusting the attitude of the parachute during the landing of the aircraft, thus ensuring landing safety. At the same time, releasing the parachute harness in two stages can reduce the acceleration of the aircraft and the pilot when the parachute decelerates.

[0061] In this embodiment, a second explosion cavity 322 is formed inside the explosion end 320, and the igniter 4 is disposed inside the second explosion cavity 322. A relatively sealed second gas chamber 200 is formed between the outer side of the igniter 4 and the inner side of the cavity of the second explosion cavity 322.

[0062] The explosion end 320 has an airflow channel 323 that connects the second air chamber 200 and the first air chamber 100.

[0063] In this embodiment, the gas released by the igniter 4 flows from the second gas chamber 200 to the first gas chamber 100 through the airflow channel 323. In other embodiments, the igniter 4 may also directly release gas into the first gas chamber 100.

[0064] like Figure 1 and Figure 3 As shown, in this embodiment, the igniter 4 includes a gas generator 410 and a plug 420 connected to the gas generator 410, the plug 420 being used to achieve electrical connection.

[0065] The gas generator 410 is equipped with a gas outlet. The gas generator 410 is an electrical component. When an explosion command is received, the gas generator 410 releases gas into the first gas chamber 100 through the gas outlet.

[0066] like Figure 5 As shown, in this embodiment, the explosion end 320 has a boss. By setting a retaining ring 5 at the end of the explosion end 320 away from the rope winding end 310 and cooperating with the boss, the gas generator 410 is fixed.

[0067] In other embodiments, the gas generator 410 is secured to the end of the explosion end 320 away from the rope end 310 by fasteners.

[0068] like Figure 1 and Figure 4 As shown, in this embodiment, the lifting point connector seat 1 includes a base plate 110 and a first wall 120 and a second wall 130 disposed on the base plate 110. The first wall 120 and the second wall 130 are spaced apart and form a rope passage 101.

[0069] The first wall 120 has a first hole 121, which is a stepped hole with a large hole section and a small hole section. The large hole section is located on the side near the second wall 130 and is used to set the rope end 310 of the explosive pin 3.

[0070] In this embodiment, the tensioning connector 2 includes a cover 210, a break section 220 and a connecting section 230 connected in sequence. The outer diameter of the cover 210 is larger than the diameter of the small hole section, and the outer diameter of the break section 220 is smaller than the outer diameter of the cover 210 and / or the connecting section 230.

[0071] The cover 210 is located on the side of the first wall 120 away from the second wall 130, and the broken section 220 and the connecting section 230 are fixed to the rope end 310 of the explosive pin 3 through the small hole section.

[0072] When the igniter 4 introduces gas into the first gas chamber 100, the broken section 220 of the tensioning connector 2 is subjected to a tensile force along the axial direction of the explosive pin 3 under the action of the explosive pin 3, causing the tensioning connector 2 to tend to move away from the cover 210. Meanwhile, the cover 210 of the tensioning connector 2 abuts against the first wall 120. When the tensile force on the broken section 220 exceeds its tensile strength, the broken section 220 breaks, causing the explosive pin 3 to move away from the cover 210.

[0073] In this embodiment, the rope-winding end 310 of the explosive pin 3 has a connecting hole, the connecting section 230 has an external thread, and the connecting hole has an internal thread. The tensioning connector 2 and the explosive pin 3 are fixed by threaded connection.

[0074] In other embodiments, the connecting hole is a light hole, and the connecting segment 230 is interference-fitted with the connecting hole.

[0075] In this embodiment, the parachute harness release device further includes a first sealing element 6. A first explosion chamber 102 is formed on the side of the second wall 130 away from the first wall 120. The second wall 130 has a second hole 131 communicating with the first explosion chamber 102. The end of the rope end 310 near the explosion end 320 passes through the second hole 131. The first sealing element 6 is disposed between the rope end 310 and the second hole 131 to prevent gas leakage from the sealed first gas chamber 100 at the connection between the rope end 310 and the second wall 130.

[0076] In actual use, the connection hole of the rope end 310 is a countersunk hole, or the connection hole of the rope end 310 is a through hole, and the tensioning connector 2 and the rope end 310 of the explosive pin 3 are sealed together.

[0077] In this embodiment, the parachute sling release device further includes a fixing pin 7 and a cotter pin 8. The fixing pin 7 is sequentially disposed on the first wall 120 and the second wall 130 and cooperates with the cotter pin 8. The fixing pin 7 is used to wind the outer loop of the parachute sling.

[0078] like Figure 1 and Figure 5 As shown, in this embodiment, the parachute harness release device further includes a second seal 9 and a stop ring 10. The second seal 9 is disposed between the first explosion chamber 102 and the sealing part 321 to prevent air leakage.

[0079] The stop ring 10 is located at the end of the first explosion chamber 102 away from the first wall 120. The inner diameter of the stop ring 10 is larger than the outer diameter of the body of the igniter 4 and the explosion end 320, while the inner diameter of the stop ring 10 is smaller than the outer diameter of the sealing part 321.

[0080] The outer diameter of the explosive end 320 of the explosive pin 3 is larger than the outer diameter of the rope-winding end 310;

[0081] When the explosive pin 3 is in the rope-releasing position, the stop ring 10 is used to prevent the explosive pin 3 from disengaging from the lifting point connector seat 1. That is, the igniter 4 and the explosive end 320 can pass through the stop ring 10, while the sealing part 321 is blocked by the stop ring 10.

[0082] This application also provides an aircraft, including an aircraft body, a parachute, and a parachute sling release device, wherein the parachute is mounted on the aircraft body via the parachute sling release device.

[0083] The parachute sling release device is one of the parachute sling release devices described above.

[0084] By providing an aircraft with a controllable parachute sling release device, the aircraft and its occupants can land smoothly, reducing the possibility of injury.

[0085] The above description is merely a preferred embodiment of the present invention and does not limit the scope of patent protection of the present invention. Any equivalent structural transformations made based on the description and drawings of the present invention, whether directly or indirectly applied to other related technical fields, are similarly included within the scope of protection of the present invention.

Claims

1. A parachute sling release device, characterized in that, This includes the lifting point connector, tensioning connector, explosion pin, and igniter; The lifting point connector seat has a first explosion cavity and a rope passage for the paracord sling to pass through; The explosive pin includes a rope-wound end and an explosive end connected to the rope-wound end. A sealing portion is formed on the outer periphery of the explosive end. The rope-wound end passes through the lifting point connector seat and is arranged across the rope-threading channel. The explosive end is located in the first explosive cavity. The connection between the explosive end and the rope-wound end is located in the first explosive cavity, and the sealing portion of the explosive end contacts the side wall of the first explosive cavity, so that a sealed first air chamber adjacent to the rope-threading channel is formed between the explosive pin and the first explosive cavity. The tensioning connector is mounted on the lifting point joint seat and connected to the side of the rope winding end away from the explosive end. The tensioning connector is used to fix the rope winding end on the lifting point joint seat. The igniter is disposed on the explosive end, and the igniter has a gas outlet that communicates with the first gas chamber. The igniter is used to release gas into the first gas chamber. The explosive pin has a rope-locking position and a rope-releasing position: When the igniter does not release gas into the first gas chamber, the explosive pin is in the rope locking position. At this time, the rope winding end passes across the rope threading channel and is fixed to the suspension point connector seat through the tensioning connector. The rope winding end is used to wind and gather the inner circuit of the parachute sling. When the igniter is activated and gas is released into the first gas chamber, the pressure inside the sealed first gas chamber increases to the point that the tensioning connector fails to connect, which drives the explosive end to move away from the rope end. At the same time, the rope end moves out of the rope passage, and the inner loop of the sling wrapped on the rope end is released. At this time, the explosive pin is in the rope release position.

2. The parachute harness release device as described in claim 1, characterized in that, A second explosion chamber is formed inside the explosion end, and the igniter is disposed inside the second explosion chamber. A relatively sealed second gas chamber is formed between the outer side of the igniter and the inner side of the second explosion chamber. The explosion end has an airflow channel connecting the second air chamber and the first air chamber.

3. The parachute sling release device as described in claim 2, characterized in that, The igniter includes a gas generator and a plug connected to the gas generator, the plug being used to achieve electrical connection; The gas generator is equipped with the gas outlet. The gas generator is an electrical component. When an explosion command is received, the gas generator releases gas into the first gas chamber through the gas outlet.

4. The parachute sling release device as described in claim 1, characterized in that, The lifting point connector includes a base plate and a first wall and a second wall disposed on the base plate. The first wall and the second wall are spaced apart and form the rope threading channel. The first wall has a first hole, which is a stepped hole with a large hole section and a small hole section. The large hole section is located on the side close to the second wall and is used to attach the rope end of the explosive pin.

5. A parachute sling release device as described in claim 4, characterized in that, The tensioning connector includes a cover, a broken section, and a connecting section connected in sequence. The outer diameter of the cover is larger than the diameter of the small hole section, and the outer diameter of the broken section is smaller than the outer diameter of the cover and / or the connecting section. The cover is disposed on the side of the first wall away from the second wall, and the broken section and the connecting section pass through the small hole section and are fixed to the rope end of the explosive pin.

6. A parachute sling release device as described in claim 5, characterized in that, The rope-wound end of the explosive pin has a connecting hole with an internal thread, the connecting section has an external thread, and the tensioning connector is fixed to the explosive pin by a threaded connection. Alternatively, the connecting hole may be a light hole, and the connecting segment may be interference-fitted with the connecting hole.

7. A parachute sling release device as described in claim 4, characterized in that, The parachute harness release device further includes a first sealing element. The second wall forms the first explosion chamber on the side away from the first wall. The second wall has a second hole communicating with the first explosion chamber. The end of the rope winding end near the explosion end passes through the second hole. The first sealing element is disposed between the rope winding end and the second hole to prevent gas leakage from the sealed first air chamber at the connection between the rope winding end and the second wall.

8. A parachute sling release device as described in claim 4, characterized in that, The parachute harness release device also includes a fixing pin and a cotter pin. The fixing pin is sequentially installed on the first wall and the second wall and cooperates with the cotter pin. The fixing pin is used to wind the outer loop of the parachute harness.

9. A parachute sling release device as described in claim 1, characterized in that, The parachute harness release device further includes a second seal and a stop ring. The second seal is disposed between the first explosion chamber and the sealing part to prevent air leakage. The stop ring is located at the end of the first explosion chamber away from the first wall. The inner diameter of the stop ring is larger than the outer diameter of the igniter and the body of the explosion end, while the inner diameter of the stop ring is smaller than the outer diameter of the sealing part. The outer diameter of the explosive end of the explosive pin is larger than the outer diameter of the rope-winding end; When the explosive pin is in the rope-releasing position, the stop ring is used to prevent the explosive pin from disengaging from the lifting point connector seat.

10. An aircraft, characterized in that, It includes an aircraft body, a parachute, and a parachute strap release device, wherein the parachute is mounted on the aircraft body via the parachute strap release device; The parachute sling release device is a parachute sling release device as described in any one of claims 1 to 9.

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