CN101487681B - Cutting method for emergency opening lock catch of cabin door for passenger plane test flight service - Google Patents
Cutting method for emergency opening lock catch of cabin door for passenger plane test flight service Download PDFInfo
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- CN101487681B CN101487681B CN2009100250699A CN200910025069A CN101487681B CN 101487681 B CN101487681 B CN 101487681B CN 2009100250699 A CN2009100250699 A CN 2009100250699A CN 200910025069 A CN200910025069 A CN 200910025069A CN 101487681 B CN101487681 B CN 101487681B
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- cutter
- lock catch
- snap close
- cutting
- cabin door
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Abstract
The invention discloses a cutting method for a lock catch when a service door is emergently opened during test flight of passenger plane. The method includes the followings: (1) choice of cutting position: the cutting position is chosen to be at the inner side of the lock catch close to the edge of the service door; (2) determination of incision parameters: the incision is U-shaped, and the length and the width are respectively equal to the width and depth of a U-shaped groove of the lock catch; (3) choice of cutter: a flexible cutter is used, and the cutting ability is 1.25-1.35 times of the maximum thickness among three sections of the lock catch; (4) installation of cutter: the cutter is configured to be U-shaped and tightly stuck with the surface of the inner side of the lock catch; (5) initiation of cutter: after an insensitive electric detonator receives signals of explosion initiation, a silver micro-primacord fuse is initiated, and the primacord fuse is connected with the cutter through an energy amplifier; the energy amplifier carries out initiation on the cutter and cuts off the lock catch. The cutting method of the lock catch in the invention is fast and high-efficient, thereby avoiding the defect of connection of a plurality of cutters and having the benefit for the safety of test flight staff.
Description
Technical field
The cutting method of snap close when the present invention relates to a kind of passenger plane test flight service cabin door emergency opening.
Background technology
According to the 15 article of (four) regulation of CCAR-21R2 " civil aviation product and parts qualified authorization regulation " " except that aerodone or manned balloon; the applicant has all taked enough measures in the time of should proving each flight test, so that the group membership that takes a flight test can emergency escape and use parachute; ... ".For the group membership's that guarantees to take a flight test in the big passenger plane test flight process safety, need in the aircraft of taking a flight test, assemble the aerial emergency unlocking system of service cabin door.Should " system " adopt accurate blasting technique, essential can be when needed, instruction and action according to the captain, make emergency pressure relief in the aircraft passenger compartment, remove the constraint between service cabin door and the doorframe, and with service cabin door horizontal sliding one segment distance in the cabin, to hew out the Wheelchair Accessible of withdrawing for the group membership that takes a flight test.
Requirement in addition can not constitute injury to persons on board in the blasting process, can not destroy the structure and the airborne equipment at other positions of aircraft, can not cause unacceptable influence to the flight attitude of aircraft.
Summary of the invention
Goal of the invention: the objective of the invention is design feature, the cutting method of service cabin door snap close in a kind of passenger plane test flight is provided, so that disconnect being connected between service cabin door and the fuselage fast and effectively at existing service cabin door snap close.
Technical scheme: in order to realize the foregoing invention purpose, the technical solution used in the present invention is:
The cutting method of snap close during a kind of passenger plane test flight service cabin door emergency opening, this method comprises following content:
(1) cutting position is selected
The selection principle of cutting position is: can reliably disconnect being connected between snap close place door and the doorframe; After disconnecting, snap close can not produce obstacle to the horizontal sliding of follow-up service hatch door; Be convenient to the installation and the protection thereof of cutter.According to mentioned above principle, cutting position is chosen in the snap close inboard near the service cabin door edge.
(2) notch parameters determines
Notch parameters mainly comprises: the shape of otch, length and width; Otch be shaped as U-shaped, be to guarantee on snap close, to form the section that connects, the length of otch and width are equal to the width and the degree of depth of snap close U type groove respectively.
(3) type selecting of cutter
The principal element that type selecting is considered is cutting power, version and the hard and soft property of cutter.
Cutting power is defined as the maximum ga(u)ge that can cut off target plate.Because cutting power is made up of the penetrativeness of jet and the tear edge of explosion product, both ratios are about 7: 3, be the reliability of assurance otch perforation and the planarization of section, select a cutter for use, the cutting power of selected cutter is 1.25～1.35 times of maximum ga(u)ge in snap close U type groove lower wing plate, web and the upper flange.
Because the cross section of aircraft service cabin door snap close is a small size U type groove, for guaranteeing cutting effect, cutter should be able to be complementary with this shape when being provided with in U type groove, so select flexible linear cavity effect cutter.
(4) installation of cutter
The shape of cutter is set to the U type, fits tightly installation with the snap close inner surface;
For preventing splashing, weaken explosion wave and reducing noise of fragment emission and remaining jet effectively; protect the group membership's that takes a flight test personal safety; cutter is installed in protection and the fixture; rely on the architectural feature of snap close, propagation of explosion primacord, energy amplifying device, cutter and fixing and protector are integrated.
(5) cutter detonates
After the insensitiveness electric cap receives time break, the silver fine primacord that detonates, primacord links to each other with cutter through energy amplifier, and by this energy amplifier cutter that detonates, cuts off snap close.
Beneficial effect: use cutting method cutting lock catch of the present invention under the passenger traffic state, other method is a kind of method of quickness and high efficiency relatively; The line style beehive-shaped charge is other charging means relatively, helps reducing explosive consumption; The choosing of cutting position help taking a flight test group personnel's safety.
Description of drawings
Fig. 1 is an incision size schematic diagram of the present invention.
Fig. 2 is a kerf width size schematic diagram among Fig. 1.
Fig. 3 is a cutter structural representation of the present invention.
Fig. 4 is a method of ignition principle schematic of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is done further explanation.
Cutting position is chosen in the snap close inboard near the service cabin door edge.Groove depth 19.2mm, the groove width 26.1mm of this place's snap close U-lag; The thickness of U type groove lower wing plate, web and upper flange is respectively 6mm, 4.75mm, 2.5mm.
Notch parameters: as depicted in figs. 1 and 2, the length a of otch and width b are equal to the width and the degree of depth of lock buckling groove respectively; The degree of depth of joint-cutting c1, c2 and c3 equals three wall thickness of U type groove respectively; D is the width of joint-cutting, determines that by the cutter of appropriate selection d is 1mm herein.
It is the flexible jet cutter of cavity liner and sheathing material that cutter adopts with the lead-antimony alloy, and its powder charge is the A5 explosive, and explosive payload is 13.5g/m, can reliably cut the thick import aluminium alloy plate of 8mm.
Cutter and snap close inner surface fit tightly installation; The shape of cutter is set to the U type, and as shown in Figure 3, wherein, 21 is cavity liner, and 22 are powder charge, and 23 is metal shell.
For preventing fragment emission effectively, weaken explosion wave and reducing noise; protect the group membership's that takes a flight test personal safety; cutter is installed in protection and the fixture; rely on the architectural feature of snap close, propagation of explosion primacord, energy amplifying device, cutter and fixing and protector are integrated.
The method of ignition as shown in Figure 4,1 is the insensitiveness detonator; 2 is silver fine silver-colored primacord, and its diameter is Φ 1.0mm, and explosive payload is 360mg/m; 3 for expanding quick-fried type energy amplifier; 4 is cutter; 5 is loading wire of electric detonator.After insensitiveness electric cap 1 receives time break, the silver fine primacord 2 that detonates, primacord links to each other with cutter 4 through energy amplifier 3, and by this energy amplifier 3 cutter 4 that detonates, cuts off snap close.Show that through test of many times this method can reliable initiation.
This method is succeedd in the acceptance test of passenger plane test flight stage emergency opening of service cabin door system.
Claims (2)
1. the cutting method of snap close during a passenger plane test flight service cabin door emergency opening is characterized in that this method comprises following content:
(1) cutting position is selected: cutting position is chosen in the snap close inboard near the service cabin door edge;
(2) notch parameters is determined: otch be shaped as U-shaped, the length of otch and width are equal to the width and the degree of depth of snap close U type groove respectively;
(3) cutter is selected: select a cutter, its cutting power is 1.25～1.35 times of maximum ga(u)ge in snap close U type groove lower wing plate, web and the upper flange;
(4) cutter is installed: the shape of cutter is set to the U type, fits tightly installation with the snap close inner surface;
(5) cutter detonates: after the insensitiveness electric cap receives time break, and the fine primacord that detonates, primacord links to each other with cutter through energy amplifier, and by this energy amplifier cutter that detonates, cuts off snap close.
2. the cutting method of snap close during passenger plane test flight service cabin door emergency opening according to claim 1, it is characterized in that: in the content (3), described cutter is flexible linear cavity effect cutter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100250699A CN101487681B (en) | 2009-02-16 | 2009-02-16 | Cutting method for emergency opening lock catch of cabin door for passenger plane test flight service |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100250699A CN101487681B (en) | 2009-02-16 | 2009-02-16 | Cutting method for emergency opening lock catch of cabin door for passenger plane test flight service |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101487681A CN101487681A (en) | 2009-07-22 |
| CN101487681B true CN101487681B (en) | 2010-10-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100250699A Expired - Fee Related CN101487681B (en) | 2009-02-16 | 2009-02-16 | Cutting method for emergency opening lock catch of cabin door for passenger plane test flight service |
Country Status (1)
| Country | Link |
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| CN (1) | CN101487681B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102261873B (en) * | 2011-06-29 | 2013-12-04 | 公安部第一研究所 | Split opener for emergency channel entrance |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102211659B (en) * | 2011-05-04 | 2013-05-08 | 中国航空工业集团公司西安飞机设计研究所 | Explosive cutting rope protection method for airframe truss or frame structure |
| CN102285455A (en) * | 2011-05-04 | 2011-12-21 | 中国航空工业集团公司西安飞机设计研究所 | Protection method for explosively cutting aircraft fuselage structure |
| CN102243042B (en) * | 2011-06-29 | 2013-08-14 | 公安部第一研究所 | Integral type emergency channel entrance opening device |
| CN105698620A (en) * | 2016-03-23 | 2016-06-22 | 中国工程物理研究院化工材料研究所 | Detonation intensifier used for explosion propagation of small-explosive-quantity cutting rope |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4716831A (en) * | 1986-11-03 | 1988-01-05 | The Ensign-Bickford Company | Detonating cord connector |
| US5227579A (en) * | 1992-06-10 | 1993-07-13 | The United States Of America As Represented By The Secretary Of The Army | Manifold separation device |
| CN1978158A (en) * | 2005-12-05 | 2007-06-13 | 西安近代化学研究所 | Plane-cabin energy-collected cutting apparatus |
-
2009
- 2009-02-16 CN CN2009100250699A patent/CN101487681B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4716831A (en) * | 1986-11-03 | 1988-01-05 | The Ensign-Bickford Company | Detonating cord connector |
| US5227579A (en) * | 1992-06-10 | 1993-07-13 | The United States Of America As Represented By The Secretary Of The Army | Manifold separation device |
| CN1978158A (en) * | 2005-12-05 | 2007-06-13 | 西安近代化学研究所 | Plane-cabin energy-collected cutting apparatus |
Non-Patent Citations (3)
| Title |
|---|
| US 4716831 A,全文. |
| 纪冲,龙源,杨旭,刘建青,刘维柱.线型聚能切割器在工程爆破中的应用研究.爆破器材33 1.2004,33(1),32-35. |
| 纪冲,龙源,杨旭,刘建青,刘维柱.线型聚能切割器在工程爆破中的应用研究.爆破器材33 1.2004,33(1),32-35. * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102261873B (en) * | 2011-06-29 | 2013-12-04 | 公安部第一研究所 | Split opener for emergency channel entrance |
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| Publication number | Publication date |
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| CN101487681A (en) | 2009-07-22 |
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