WO1991003638A1 - Security igniter for propulsor - Google Patents

Security igniter for propulsor Download PDF

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Publication number
WO1991003638A1
WO1991003638A1 PCT/FR1990/000594 FR9000594W WO9103638A1 WO 1991003638 A1 WO1991003638 A1 WO 1991003638A1 FR 9000594 W FR9000594 W FR 9000594W WO 9103638 A1 WO9103638 A1 WO 9103638A1
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WO
WIPO (PCT)
Prior art keywords
igniter
primer
holder part
relay
safety
Prior art date
Application number
PCT/FR1990/000594
Other languages
French (fr)
Inventor
Alain Boely
Noël FULCHIRON
Original Assignee
Thomson-Brandt Armements
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thomson-Brandt Armements filed Critical Thomson-Brandt Armements
Publication of WO1991003638A1 publication Critical patent/WO1991003638A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
    • F02K9/95—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof characterised by starting or ignition means or arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
    • F42C15/34—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected by a blocking-member in the pyrotechnic or explosive train between primer and main charge

Definitions

  • the invention relates to a safety igniter for igniting thrusters.
  • the object of the invention is to achieve this aim and relates to a safety igniter for a thruster, the igniter comprising a primer (5) constituted by a primary pyrotechnic charge and a booster relay (1) comprising a secondary pyrotechnic charge, arranged in a relay body (2) forming an envelope; the igniter being characterized in that it further comprises:
  • an igniter body (3) forming an envelope, in which a bore ( ⁇ ..) is produced substantially axially, the igniter body being disposed substantially along the same axis (xy) as the relay body (2) and being attached to the latter;
  • FIG. 1 illustrates an embodiment of the igniter according to the invention in a safety configuration
  • an igniter according to the invention comprises a primer (5) formed of a primary pyrotechnic charge.
  • a booster relay (1) consisting of a secondary pyrotechnic charge.
  • the latter is contained in a relay body (2) comprising a plurality of orifices (22) putting the igniter in communication with the device to be ignited, the propellant for example, of which only one element is seen in the figures ( 12).
  • This relay body (2) is integral with the body of the igniter (3), itself made integral with the propellant by any known means.
  • Safety requires that in the event of inadvertent ignition of the primer (5), means are provided so that the gases inadvertently emitted do not reach the reinforcing relay (1) and that this rupture of the pyrotechnic chain ignition prevents any incident which could lead to the unplanned ignition of the thruster.
  • this result is obtained by ensuring the confinement of these gases so that they cannot precisely go to initiate the ignition booster relay (1).
  • a passage allows the gases emitted by the primer (5) to reach the relay (1).
  • the primer (5) is contained and fixed in a chamber, the envelope of which is a primer holder part (4) which is threaded through a bore of diameter ( ⁇ .,) Produced in the body (3) of the igniter. , and can slide in this bore ( ⁇ ..) along an axis (xy).
  • this axis (xy) is substantially coincident with the axis of the relay body (2) and of the load (1).
  • this primer holder part (4) has a so-called external shoulder (11) which abuts on a so-called internal shoulder (120) of the body (3) of the igniter when it is in the armed position c is to say operational ( Figure 2).
  • the primer holder part (4) comprises at one of its ends, a bore ( ⁇ réelle) in which a centering base (44) is fitted, forming an integral part of the relay body (2) .
  • this relay body (2) there is a channel (33) opening into a chamber (14) open to the secondary pyrotechnic component (1); this channel (33) ensures, when the igniter is armed, a passage for the gases between the two primary and secondary pyrotechnic charges of the igniter.
  • the end of the primer holder part (4) opposite the end carrying the bore ( ⁇ réelle), carries a thread (20) on which is screwed a nut (6) which rests on a shoulder of the sliding part (4).
  • a set of O-rings (8, 9 and 10) ensures the seal respectively between the primer holder part (4) and the outside of the igniter; between the sliding part (4) and the body (3) of the igniter; finally, between this sliding part (4) and the base (44) of the relay body (2) when the igniter is in the safety position (FIG. 1).
  • the sliding primer holder (4) is hand held in the unarmed, that is to say safety, position, illustrated in FIG. 1.
  • the channel (33) is closed by the part (4).
  • the sliding part (4) immobilized by the stop (7) cannot slide and the channel (33) remaining closed, the gases emitted by the combustion of the primary pyrotechnic charge (5) are confined.
  • the pyrotechnic chain being broken, the reinforcing relay (1) is protected and remains inert as well as the propellant.
  • the retraction of the stop (7) being previously (or simultaneously) carried out elsewhere, it causes the ignition of the primer (5) by the electrical inlets ( 11).
  • the pressure of the gases emitted can then cause the part (4) to slide.
  • the igniter is in the armed position: the channel (33) is released; the gases pass through it and ignite the secondary pyrotechnic charge (1) which then plays its role and ignites the propellant.
  • the invention applies to all types of igniters for propellant charges requiring a safety position capable of avoiding any risk of inadvertent ignition of the propellant charge.
  • the igniter according to the invention thanks to the arrangement of the primer (5) and the relay (1) on the same axis (xy) and the arrangement of the primer (5) in the moving part ( 4), is particularly compact and simple to produce. Finally, the dead volumes being thus reduced to a minimum, it is possible to use a primer (5) containing relatively little pyrotechnic charge, leading to a relatively small production of gas, which lends itself to confinement and does not require exhaust to the outside in case of accidental ignition.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)

Abstract

The invention relates to a security igniter intended to the firing of propulsors. The igniter is comprised of a sliding piece (4) which may take two positions: the first position so called 'security' position which provides for the confinement of gases emitted by the primary pyrotechnical charge (5) in the case where the latter will be fired without any ignition order; the second position called 'armed' position which provides for the passage of gases from the primary charge towards the second charge (1), the pyrotechnical chain being thus established. A retractable stop (7) provides for the safety of operation. The invention applies to any type of igniter for propulsive charges requiring a safety position.

Description

ALLUMEUR DE SECURITE POUR PROPULSEUR SAFETY IGNITER FOR PROPELLER
L'invention concerne un allumeur de sécurité destiné à la mise à feu de propulseurs .The invention relates to a safety igniter for igniting thrusters.
Différents types d'allumeurs existent actuellement sur le marché mais l'une des préoccupations majeures des utilisateurs est la sécurité de onctionnement. Notamment, il est impératif de supprimer tout risque d'allumage intempestif du propulseur même si ' l'inflammateur prend feu inopinément sous l'action par exemple de paramètres liés à l'environnement, tels que des champs électromagnétiques importants . L'invention a pour objet de réaliser ce but et concerne un allumeur de sécurité pour propulseur, l'allumeur comportant une amorce (5) constituée par une charge pyrotechnique primaire et un relais renforçateur (1) comportant une charge pyrotechnique secondaire, disposée dans un corps de relais (2) formant enveloppe ; l'allumeur étant caractérisé par le fait qu'il comporte en outre :Different types of igniters currently exist on the market but one of the major concerns of users is the safety of unctioning. In particular, it is imperative to eliminate any risk of inadvertent ignition of the propellant even if ' the igniter catches fire unexpectedly under the action for example of parameters linked to the environment, such as strong electromagnetic fields. The object of the invention is to achieve this aim and relates to a safety igniter for a thruster, the igniter comprising a primer (5) constituted by a primary pyrotechnic charge and a booster relay (1) comprising a secondary pyrotechnic charge, arranged in a relay body (2) forming an envelope; the igniter being characterized in that it further comprises:
- un corps d'allumeur (3) formant enveloppe, dans lequel est réalisé sensiblement axialement un alésage ( φ.. ) , le corps d'allumeur étant disposé sensiblement selon le même axe (xy) que le corps de relais (2) et étant fixé à ce dernier ;- an igniter body (3) forming an envelope, in which a bore (φ ..) is produced substantially axially, the igniter body being disposed substantially along the same axis (xy) as the relay body (2) and being attached to the latter;
- une pièce porte-amorce (4) , montée coulissante dans l'alésage ( φ.. ) , l'amorce (5) étant fixée à l'intérieur de la pièce porte-amorce (4) ; que dans le corps de relais (2) est réalisé un canal (33) , et que la pièce porte -amorce (4) peut occuper une première position, dite de sécurité, dans laquelle elle assure l'obturation du canal (33) , et une deuxième position, dite armée, dans laquelle elle libère le canal (33) , permettant ainsi le passage de gaz entre l'amorce (5) et la charge secondaire relais (1) . La présente invention sera mieux comprise à l'aide des explications qui vont suivre et des figures jointes , parmi lesquelles : la figure 1 illustre un mode de réalisation de l'allumeur conforme à l'invention dans une configuration de sécurité ;- a primer holder part (4), slidably mounted in the bore (φ ..), the primer (5) being fixed inside the primer holder part (4); that in the relay body (2) is made a channel (33), and that the primer holder part (4) can occupy a first position, called safety, in which it ensures the obturation of the channel (33), and a second position, called armed, in which it frees the channel (33), thus allowing the passage of gas between the primer (5) and the secondary relay load (1). The present invention will be better understood using the explanations which follow and the attached figures, among which: FIG. 1 illustrates an embodiment of the igniter according to the invention in a safety configuration;
- la figure 2 illustre cette même réalisation dans sa configuration de fonctionnement.- Figure 2 illustrates this same embodiment in its operating configuration.
Pour plus de clarté, les mêmes éléments portent les mêmes références dans toutes les figures .For the sake of clarity, the same elements are given the same references in all the figures.
Comme le montrent les figures 1 et 2 , un allumeur conforme à l'invention comporte une amorce (5) formée d'une charge pyrotechnique primaire . Celle-ci est destinée à enflammer un relais renforçateur (1) constitué d'une charge pyrotechnique secondaire . Ce dernier est contenu dans un corps de relais (2) comportant une pluralité d'orifices (22) mettant l'allumeur en communication avec le dispositif à allumer, le propulseur par exemple, dont on ne voit sur les figures qu'un élément (12) . Ce corps de relais (2) est solidaire du corps de l'allumeur (3) , lui-même rendu solidaire du propulseur par tout moyen connu.As shown in Figures 1 and 2, an igniter according to the invention comprises a primer (5) formed of a primary pyrotechnic charge. This is intended to ignite a booster relay (1) consisting of a secondary pyrotechnic charge. The latter is contained in a relay body (2) comprising a plurality of orifices (22) putting the igniter in communication with the device to be ignited, the propellant for example, of which only one element is seen in the figures ( 12). This relay body (2) is integral with the body of the igniter (3), itself made integral with the propellant by any known means.
La sécurité impose qu'en cas de mise à feu intempestive de l'amorce (5) , des moyens soient prévus pour que les gaz malencontreusement émis n'atteignent pas le relais renforçateur (1) et que cette rupture de la chaîne pyrotechnique d'allumage empêche tout incident pouvant aboutir à la mise à feu non programmée du propulseur .Safety requires that in the event of inadvertent ignition of the primer (5), means are provided so that the gases inadvertently emitted do not reach the reinforcing relay (1) and that this rupture of the pyrotechnic chain ignition prevents any incident which could lead to the unplanned ignition of the thruster.
Conformément à l'invention, ce résultat est obtenu en assurant le confinement de ces gaz de telle sorte qu'ils ne puissent précisément aller initier le relais renforçateur d'allumage (1) . En revanche, lorsque toutes les conditions d'allumage sont remplies, un passage permet aux gaz émis par l'amorce (5) d'atteindre le relais (1) .In accordance with the invention, this result is obtained by ensuring the confinement of these gases so that they cannot precisely go to initiate the ignition booster relay (1). On the other hand, when all the ignition conditions are met, a passage allows the gases emitted by the primer (5) to reach the relay (1).
La combinaison des moyens mis en oeuvre conformément à l'invention pour accomplir la double fonction de confinement d'une part et d'autorisation de passage des gaz d'autre part est maintenant décrite .The combination of the means used in accordance with the invention to achieve the double confinement function of a part and gas passage authorization on the other hand is now described.
L'amorce (5) est contenue et fixée dans une chambre dont l'enveloppe est une pièce porte-amorce (4) qui est enfilée dans un alésage de diamètre ( Φ ., ) réalisé dans le corps (3) de l'allumeur, et peut coulisser dans cet alésage ( Φ .. ) selon un axe (xy) . Il est à noter que cet axe (xy) est sensiblement confondu avec l'axe du corps de relais (2) et de la charge (1) . D'une part, cette pièce porte -amorce (4) comporte un épaulement dit extérieur (11) qui vient en butée sur un épaulement dit intérieur (120) du corps (3) de l'allumeur lorsqu'elle est en position armée c'est-à-dire opérationnelle (figure 2) . D'autre part, la pièce porte-amorce (4) comporte à l'une de ses extrémités, un alésage ( φ „) dans lequel s'encastre une embase de centrage (44) faisant partie intégrante du corps du relais (2) .The primer (5) is contained and fixed in a chamber, the envelope of which is a primer holder part (4) which is threaded through a bore of diameter (Φ.,) Produced in the body (3) of the igniter. , and can slide in this bore (Φ ..) along an axis (xy). It should be noted that this axis (xy) is substantially coincident with the axis of the relay body (2) and of the load (1). On the one hand, this primer holder part (4) has a so-called external shoulder (11) which abuts on a so-called internal shoulder (120) of the body (3) of the igniter when it is in the armed position c is to say operational (Figure 2). On the other hand, the primer holder part (4) comprises at one of its ends, a bore (φ „) in which a centering base (44) is fitted, forming an integral part of the relay body (2) .
Dans ce corps de relais (2) , on a aménagé un canal (33) débouchant dans une chambre (14) ouverte sur le composant pyrotechnique secondaire (1) ; ce canal (33) assure, lorsque l'allumeur est armé, un passage pour les gaz entre les deux charges pyrotechniques primaire et secondaire de l'allumeur.In this relay body (2), there is a channel (33) opening into a chamber (14) open to the secondary pyrotechnic component (1); this channel (33) ensures, when the igniter is armed, a passage for the gases between the two primary and secondary pyrotechnic charges of the igniter.
L'extrémité de la pièce porte-amorce (4) , opposée à l'extrémité portant l'alésage ( φ„) , porte un filetage (20) sur lequel vient se visser un écrou (6) qui s'appuie sur un épaulement de la pièce coulissante (4) . Un jeu de joints toriques (8, 9 et 10) assure l'étanchéité respectivement entre la pièce porte-amorce (4) et l'extérieur de l'inflammateur ; entre la pièce coulissante (4) et le corps (3) de l'allumeur ; enfin, entre cette pièce coulissante (4) et l'embase (44) du corps de relais (2) lorsque l'allumeur est en position de sécurité (figure 1) .The end of the primer holder part (4), opposite the end carrying the bore (φ „), carries a thread (20) on which is screwed a nut (6) which rests on a shoulder of the sliding part (4). A set of O-rings (8, 9 and 10) ensures the seal respectively between the primer holder part (4) and the outside of the igniter; between the sliding part (4) and the body (3) of the igniter; finally, between this sliding part (4) and the base (44) of the relay body (2) when the igniter is in the safety position (FIG. 1).
Le fonctionnement de l'allumeur conforme à l'invention est maintenant décrit.The operation of the igniter according to the invention is now described.
En position de sécurité, une butée escamotable (7) coincée entre la structure (12) du propulseur et l'écrou (6) , immobilise celui-ci. La pièce coulissante porte-amorce (4) est main tenue en position non armée, c'est-à-dire de sécurité, illustrée sur la figure 1. Le canal (33) est obturé par la pièce (4) . En cas d'allumage spontané et non voulu de l'amorce (5) , la pièce coulissante (4) immobilisée par la butée (7) ne peut coulisser et le canal (33) restant obturé, les gaz émis par la combustion de la charge pyrotechnique primaire (5) se trouvent confinés . La chaîne pyrotechnique étant rompue, le relais renforçateur (1) est protégé et reste inerte ainsi que le propulseur . En revanche, lorsqu'un ordre d'allumage est donné, l'escamotage de la butée (7) étant préalablement (ou simultanément) réalisé par ailleurs, il provoque la mise à feu de l'amorce (5) par les arrivées électriques (11) . La pression des gaz émis peuvent alors provoquer le coulissement de la pièce (4) . L'allumeur est en position armée : le canal (33) est libéré ; les gaz transitent par celui-ci et enflamment la charge pyrotechnique secondaire (1) qui joue alors son rôle et met à feu le propulseur.In the safety position, a retractable stop (7) wedged between the structure (12) of the propellant and the nut (6) immobilizes the latter. The sliding primer holder (4) is hand held in the unarmed, that is to say safety, position, illustrated in FIG. 1. The channel (33) is closed by the part (4). In the event of spontaneous and unwanted ignition of the primer (5), the sliding part (4) immobilized by the stop (7) cannot slide and the channel (33) remaining closed, the gases emitted by the combustion of the primary pyrotechnic charge (5) are confined. The pyrotechnic chain being broken, the reinforcing relay (1) is protected and remains inert as well as the propellant. On the other hand, when an ignition order is given, the retraction of the stop (7) being previously (or simultaneously) carried out elsewhere, it causes the ignition of the primer (5) by the electrical inlets ( 11). The pressure of the gases emitted can then cause the part (4) to slide. The igniter is in the armed position: the channel (33) is released; the gases pass through it and ignite the secondary pyrotechnic charge (1) which then plays its role and ignites the propellant.
L'invention s'applique à tous types d'allumeurs pour charges propulsives nécessitant une position de sécurité capable d'éviter tout risque d'allumage intempestif de la charge propulsive.The invention applies to all types of igniters for propellant charges requiring a safety position capable of avoiding any risk of inadvertent ignition of the propellant charge.
De plus, l'allumeur selon l'invention, grâce à la disposition de l'amorce (5) et du relais (1) sur un même axe (xy) et la disposition de l'amorce (5) dans la pièce mobile (4) , est particulièrement compact et simple de réalisation. Enfin, les volumes morts étant ainsi réduits au minimum, il est possible d'utiliser une amorce (5) contenant relativement peu de charge pyrotechnique, conduisant à une production relativement peu importante de gaz, qui se prête au confinement et ne nécessite pas d'échappement vers l'extérieur en cas de mise à feu accidentelle. In addition, the igniter according to the invention, thanks to the arrangement of the primer (5) and the relay (1) on the same axis (xy) and the arrangement of the primer (5) in the moving part ( 4), is particularly compact and simple to produce. Finally, the dead volumes being thus reduced to a minimum, it is possible to use a primer (5) containing relatively little pyrotechnic charge, leading to a relatively small production of gas, which lends itself to confinement and does not require exhaust to the outside in case of accidental ignition.

Claims

REVENDI C ATI ONS REVENDI C ATI ONS
1. Allumeur de sécurité pour propulseur, l'allumeur comportant une amorce (5) constituée par une charge pyrotechnique primaire et un relais renforçateur (1) comportant une charge pyrotechnique secondaire, disposée dans un corps de relais (2) formant enveloppe ; l'allumeur étant caractérisé par le fait qu'il comporte en outre :1. Safety igniter for propellant, the igniter comprising a primer (5) constituted by a primary pyrotechnic charge and a reinforcing relay (1) comprising a secondary pyrotechnic charge, disposed in a relay body (2) forming an envelope; the igniter being characterized in that it further comprises:
- un corps d'allumeur (3) formant enveloppe, dans lequel est réalisé sensiblement axialement un alésage ( Φ1 ) , le corps d'allumeur étant disposé sensiblement selon le même axe (xy) que le corps de relais (2) et étant fixé à ce dernier ;- an igniter body (3) forming an envelope, in which a bore (Φ 1 ) is produced substantially axially, the igniter body being disposed substantially along the same axis (xy) as the relay body (2) and being attached to it;
- une pièce porte-amorce (4) , montée coulissante dans l'alésage ( φ - ) , l'amorce (5) étant fixée à l'intérieur de la pièce porte -amorce (4) ; que dans le corps de relais (2) est réalisé un canal (33) , et que la pièce porte-amorce (4) peut occuper une première position, dite de sécurité, dans laquelle elle assure l'obturation du canal (33) , et une deuxième position, dite armée, dans laquelle elle libère le canal (33) , permettant ainsi le passage de gaz entre l'amorce (5) et la charge secondaire relais (1) .- a primer holder part (4), slidably mounted in the bore (φ -), the primer (5) being fixed inside the primer holder part (4); that in the relay body (2) is made a channel (33), and that the primer holder part (4) can occupy a first position, called safety, in which it ensures the obturation of the channel (33), and a second position, called armed, in which it frees the channel (33), thus allowing the passage of gas between the primer (5) and the secondary relay load (1).
2. Allumeur selon la revendication 1, caractérisé par le fait qu'en position de sécurité, une butée (7) empêche la pièce porte-amorce (4) de coulisser.2. Igniter according to claim 1, characterized in that in the safety position, a stop (7) prevents the primer holder part (4) from sliding.
3. Allumeur selon l'une des revendications précédentes, caractérisé par le fait qu'il comporte en outre un jeu de joints (8, 9 et 10) qui assure l'étanchéité respectivement entre la pièce porte-amorce (4) et l'extérieur ; entre la pièce porte-amorce (4) et le corps d'aUumeur (3) , enfin, entre la pièce porte-amorce (4) et une embase (12) du corps de relais (2) . 3. Igniter according to one of the preceding claims, characterized in that it further comprises a set of seals (8, 9 and 10) which provides the seal respectively between the primer holder part (4) and the outside; between the primer holder part (4) and the igniter body (3), finally, between the primer holder part (4) and a base (12) of the relay body (2).
PCT/FR1990/000594 1989-09-08 1990-09-07 Security igniter for propulsor WO1991003638A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8911747A FR2651834A1 (en) 1989-09-08 1989-09-08 SAFETY IGNITER FOR PROPELLER.
FR89/11747 1989-09-08

Publications (1)

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WO1991003638A1 true WO1991003638A1 (en) 1991-03-21

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EP (1) EP0443018A1 (en)
FR (1) FR2651834A1 (en)
WO (1) WO1991003638A1 (en)

Cited By (3)

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FR2733314A1 (en) * 1995-04-20 1996-10-25 Aerospatiale Gas generator e.g. thruster for space applications
FR3037619A1 (en) * 2015-06-22 2016-12-23 Snecma ENGINE IGNITER - RETRACTABLE ROCKER
CN110206660A (en) * 2019-06-04 2019-09-06 深圳零壹空间电子有限公司 Engine ignitor

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CN100419245C (en) * 2004-12-08 2008-09-17 中国北方工业公司 Delay igniter for composite enhanced distance bullet rocket engine

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FR2082375A5 (en) * 1970-03-12 1971-12-10 Aerospatiale
FR2584141A1 (en) * 1985-06-28 1987-01-02 Onera (Off Nat Aerospatiale) Pyrotechnic ignition device fitted with a safety mechanism
US4660472A (en) * 1985-10-07 1987-04-28 Morton Thiokol Inc. Optical through bulkhead initiator and safe-arm device

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US3111810A (en) * 1961-02-21 1963-11-26 Aerojet General Co Starting device
US3511183A (en) * 1968-03-06 1970-05-12 Ted Geffner Safety and arming mechanism for fuze
FR2082375A5 (en) * 1970-03-12 1971-12-10 Aerospatiale
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FR2733314A1 (en) * 1995-04-20 1996-10-25 Aerospatiale Gas generator e.g. thruster for space applications
US5827993A (en) * 1995-04-20 1998-10-27 Societe Nationale Industrielle Et Aerospatiale Pyrotechnic ignition device for a gas generator
FR3037619A1 (en) * 2015-06-22 2016-12-23 Snecma ENGINE IGNITER - RETRACTABLE ROCKER
WO2016207535A1 (en) * 2015-06-22 2016-12-29 Snecma Retractable rocket motor igniter
CN110206660A (en) * 2019-06-04 2019-09-06 深圳零壹空间电子有限公司 Engine ignitor

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FR2651834A1 (en) 1991-03-15
FR2651834B1 (en) 1994-04-22
EP0443018A1 (en) 1991-08-28

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