WO2016165722A4 - Pyrotechnic emergency device for landing gear - Google Patents
Pyrotechnic emergency device for landing gear Download PDFInfo
- Publication number
- WO2016165722A4 WO2016165722A4 PCT/DZ2015/000003 DZ2015000003W WO2016165722A4 WO 2016165722 A4 WO2016165722 A4 WO 2016165722A4 DZ 2015000003 W DZ2015000003 W DZ 2015000003W WO 2016165722 A4 WO2016165722 A4 WO 2016165722A4
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pyrotechnic
- aircraft
- landing gear
- hydraulic
- battery
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C25/00—Alighting gear
- B64C25/02—Undercarriages
- B64C25/08—Undercarriages non-fixed, e.g. jettisonable
- B64C25/10—Undercarriages non-fixed, e.g. jettisonable retractable, foldable, or the like
- B64C25/18—Operating mechanisms
- B64C25/26—Control or locking systems therefor
- B64C25/30—Control or locking systems therefor emergency actuated
Landscapes
- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Air Bags (AREA)
Abstract
The invention combines the use of two types of energy. It relates to an auxiliary pyrotechnic device operating in complete autonomy without using any source of energy or the control appliances of the aircraft. The device provides ultimate emergency manoeuvring in the event of complete blockage of the deployment of the landing gear. Said device is autonomous and generates a high level of hydraulic power from a reserve of hydraulic oil compatible with that of the aircraft stored at zero pressure in actuating cylinders actuated by a pyrotechnic charge stored in a gas generator. The technique of said device consists in using the force of the solid gases (propellant) to create a high hydraulic pressure that can move the cylinders and the hooks of the landing gear. The design of said device is characterised by the duplication of the components so as to reduce risk of failure.
Claims
WO 2016/165722 REVENDICATIONS MODIFIÉES PCT/DZ2015/000003 reçues par le Bureau international le 09 Octobre 2016 (09.10.2016) WO 2016/165722 AMENDED CLAIMS PCT / DZ2015 / 000003 received by the International Bureau on October 09, 2016 (09.10.2016)
1- Dispositif de secours pyrotechnique pour la sortie des trains d'atterrissage des aéronefs caractérisé par l'emploi de l'énergie pyrotechnique comme puissance initiale agissant sur des vérins propulseurs pour le déploiement de la flèche et des volets du train d'atterrissage en cas de panne des circuits hydrauliques ou électriques de l'appareil, et ainsi ce dispositif est caractérisé par un fonctionnement autonome total ne nécessitant aucun raccordement électrique sur les circuits électriques de l'aéronef et, est déclenché d'une manière manuelle suite à une décision de l'équipage. A pyrotechnic emergency device for the exit of aircraft landing gear characterized by the use of pyrotechnic energy as initial power acting on propulsion cylinders for the deployment of the boom and flaps of the landing gear in case failure of the hydraulic or electrical circuits of the device, and thus this device is characterized by a total autonomous operation requiring no electrical connection to the electrical circuits of the aircraft and is triggered manually following a decision of the crew.
2- Dispositif pyrotechnique selon la revendication 1 caractérisé par l'emploi de l'énergie pyrotechnique convertie en énergie hydraulique dans un circuit indépendant équipé de sa propre alimentation par batterie pour son déclenchement. 2- pyrotechnic device according to claim 1 characterized by the use of pyrotechnic energy converted into hydraulic energy in an independent circuit equipped with its own battery power for triggering.
3- Selon les revendications 1 et 2, dispositif de secours adaptable sur tous les circuits hydrauliques existants des trains d'atterrissage avec montage qui se fait par des connexions au niveau des vérins et des crochets, ne provoquant aucune perturbation ou interférence en mode fonctionnement normal de l'aéronef. 3- According to claims 1 and 2, emergency device adaptable to all existing hydraulic circuits landing gear assembly which is made by connections at the jacks and hooks, causing no disturbance or interference in normal operating mode of the aircraft.
4- Dispositif, selon les revendications 1 et 2, caractérisé sur la base du principe de la conversion des gaz solides sous forme de pastilles de propergol confinées dans deux générateurs de gaz (GG) et (PG) en une puissance hydraulique
produite par deux vérins propulseurs (65a) et (65b), pour agir sur l'ouverture des crochets et la sortie des vérins du train d'atterrissage en mode secours. 4- Device according to claims 1 and 2, characterized on the basis of the principle of conversion of solid gases in the form of propellant pellets confined in two gas generators (GG) and (PG) in a hydraulic power produced by two propulsion cylinders (65a) and (65b), to act on the opening of the hooks and the output of the jacks of the landing gear in emergency mode.
5- Dispositif selon les revendications 3 et 4 conçu en kit de différentes puissances pyrotechniques et de volume hydraulique variable selon les spécificités de chaque aéronef. 5- Device according to claims 3 and 4 designed as a kit of different pyrotechnic powers and variable hydraulic volume depending on the specificities of each aircraft.
6- Dispositif de secours pyrotechnique selon les revendications 1, 2, 3, 4 et 5 alimenté par une batterie (1) dans la figure 2 indépendante des circuits électriques de l'aéronef. 6- Pyrotechnic emergency device according to claims 1, 2, 3, 4 and 5 powered by a battery (1) in Figure 2 independent of the electrical circuits of the aircraft.
7- Assistance électrique de la batterie (1) par une fiche auxiliaire (4) de secours en cas de défaillance d'alimentation par la batterie. 7- Electrical assistance of the battery (1) by a backup auxiliary plug (4) in case of power failure by the battery.
8- Selon les revendications 6 et 7, alimentation des boîtiers électriques de commande (12a), (12b), (12c) par deux sources électriques, soit par la batterie (1), soit par la fiche (4) dans la figure 2. 8- According to claims 6 and 7, supply of electrical control boxes (12a), (12b), (12c) by two electrical sources, either by the battery (1), or by the plug (4) in Figure 2 .
9- Dispositif selon la revendication 8 équipé de trois boîtiers de commande (12a), (12b), (12c) étanches et protégés par des couvercles de sécurité 53 pour éviter les manipulations accidentelles. 9- Device according to claim 8 equipped with three control boxes (12a), (12b), (12c) sealed and protected by safety covers 53 to prevent accidental manipulation.
10- Selon la revendication 9 chaque boîtier de commande (12) comprend trois boutons de déclenchement du dispositif. 10- According to claim 9 each control box (12) comprises three buttons for triggering the device.
11- Selon les revendications 9 et 10 chaque boîtier de commande (12a), (12b), (12c) comprend un bouton (R13) séparé
11- According to claims 9 and 10 each control unit (12a), (12b), (12c) comprises a separate button (R13)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DZ150197 | 2015-04-13 | ||
| DZ150197 | 2015-04-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2016165722A1 WO2016165722A1 (en) | 2016-10-20 |
| WO2016165722A4 true WO2016165722A4 (en) | 2016-12-15 |
Family
ID=57126096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DZ2015/000003 WO2016165722A1 (en) | 2015-04-13 | 2015-05-27 | Pyrotechnic emergency device for landing gear |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2016165722A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112173085B (en) * | 2020-09-25 | 2023-03-28 | 中国直升机设计研究所 | Hydraulic control system and method for retraction and release of helicopter undercarriage |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6311927B1 (en) * | 2000-07-11 | 2001-11-06 | Lockheed Martin Corporation | Emergency landing gear extension system using pyrotechnic operated high pressure bottle |
| ES2872881T3 (en) * | 2012-06-04 | 2021-11-03 | Aerocontrolex Group Inc | Purge actuator assembly |
| CN103466083B (en) * | 2013-08-30 | 2015-12-02 | 中航飞机起落架有限责任公司 | A kind of emergent pressurized strut |
-
2015
- 2015-05-27 WO PCT/DZ2015/000003 patent/WO2016165722A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016165722A1 (en) | 2016-10-20 |
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