FR2610287A1 - Device intended to prevent the dispersion, during their fall, of liquids or powders jettisoned in bulk from an aircraft - Google Patents
Device intended to prevent the dispersion, during their fall, of liquids or powders jettisoned in bulk from an aircraft Download PDFInfo
- Publication number
- FR2610287A1 FR2610287A1 FR8615260A FR8615260A FR2610287A1 FR 2610287 A1 FR2610287 A1 FR 2610287A1 FR 8615260 A FR8615260 A FR 8615260A FR 8615260 A FR8615260 A FR 8615260A FR 2610287 A1 FR2610287 A1 FR 2610287A1
- Authority
- FR
- France
- Prior art keywords
- sheath
- aircraft
- intended
- cap
- liquid
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 12
- 239000000843 powder Substances 0.000 title claims description 4
- 239000006185 dispersion Substances 0.000 title claims description 3
- 239000008187 granular material Substances 0.000 claims description 3
- 239000002985 plastic film Substances 0.000 claims description 2
- 238000010926 purge Methods 0.000 claims description 2
- 239000011324 bead Substances 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 229920006255 plastic film Polymers 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 229920003023 plastic Polymers 0.000 abstract description 2
- 239000004033 plastic Substances 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract 2
- 235000013580 sausages Nutrition 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229920002457 flexible plastic Polymers 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D1/00—Dropping, ejecting, releasing, or receiving articles, liquids, or the like, in flight
- B64D1/16—Dropping or releasing powdered, liquid, or gaseous matter, e.g. for fire-fighting
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/02—Fire prevention, containment or extinguishing specially adapted for particular objects or places for area conflagrations, e.g. forest fires, subterranean fires
- A62C3/0228—Fire prevention, containment or extinguishing specially adapted for particular objects or places for area conflagrations, e.g. forest fires, subterranean fires with delivery of fire extinguishing material by air or aircraft
- A62C3/0242—Fire prevention, containment or extinguishing specially adapted for particular objects or places for area conflagrations, e.g. forest fires, subterranean fires with delivery of fire extinguishing material by air or aircraft by spraying extinguishants from the aircraft
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Forests & Forestry (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Catching Or Destruction (AREA)
Abstract
Description
La présente invention concerne un dispositif destiné à soustraire un liquide largué d'un aéronef aux effets aérodynamiques qui entraînent sa dispersion pendant sa chute. The present invention relates to a device intended to subtract a liquid dropped from an aircraft to the aerodynamic effects which cause its dispersion during its fall.
Le larguage d'eau au-dessus des incendies de forêt, exécuté par les "bombardiers d'eau" (Canadairs ou autres) doits pour son efficacité1 être effectué à très basse altitude afin d'éviter la vaporisation de l'eau dans l'air avant son arrivée au sol. The release of water over forest fires, carried out by "water bombers" (Canadairs or others) must for its effectiveness1 be carried out at very low altitude in order to avoid the vaporization of water in the air before arriving on the ground.
Ceci implique l'utilisation d'avions spéciaux ou spécialement transformés, et la formation d'équipages très spécialisés dans le vol à très basse altitude et dans des conditions de relief et d'environnement souvent périlleuses. This implies the use of special or specially transformed aircraft, and the training of very specialized crews in flight at very low altitudes and in terrain and often dangerous environment conditions.
Le dispositif proposé autorise des larguages à plus haute altitude, et permet donc d 'utiliser des avions de transport classiques, équipés pour la circonstance d'un équipement amovible et qui, intervenant plus loin du sol pourront être dotés de leurs équipages habituels, et même peut-être pourront intervenir de nuit. The proposed device authorizes drops at higher altitude, and therefore allows the use of conventional transport aircraft, equipped for the occasion with removable equipment and which, operating further from the ground may be equipped with their usual crews, and even perhaps can intervene at night.
Ceci permet surtout d'éviter les frais financiers qu'implique l'achat d'appareils spécialisés et leur entretien permanent pour un temps d'emploi limité. This especially avoids the financial costs involved in purchasing specialized equipment and their permanent maintenance for a limited period of use.
Ce procédé peut aussi être employé pour le larguage d'autres liquides, poudres ou granulés dans des conditions similaires. This process can also be used for dropping other liquids, powders or granules under similar conditions.
Selon une réalisation préférentielle, le système est composé d'une partie amovible qui est fixée à l'appareil à la demande, et d'une partie larguable. La partie amovible est composée - d'une citernellXplanche I ) contenant le liquide ou les autres produits, munie - d'une porte de vidange commandable à distance; I'évacuation est prolongée
par une conduite (3) souple ou rigide, terminée par une buse (4) de forme tron
conique, fixée à l'intérieur d'un cylindre (5) qui permet la protection de la
partie larguable.According to a preferred embodiment, the system is composed of a removable part which is fixed to the device on demand, and of a releasable part. The removable part is made up of - a citernellXplanche I) containing the liquid or other products, fitted with - a remotely controllable drain door; The evacuation is prolonged
by a flexible or rigid pipe (3), terminated by a truncated nozzle (4)
conical, fixed inside a cylinder (5) which allows the protection of the
droppable part.
- la partie larguable est composée (planche 2) :
- d'un tube-support (7) rigide, de forme tronconique, qui vient coiffer la buse (4)
Il comporte un rebord (16), et des ouvertures (26) pour l'accrochage sur le
dispositif de verrouillage (20);
- d'une gaine en film plastique souple - polyéthylène ou autre - qui est enfilée
plissée sur ce tube-support, sa longueur est adaptée à la contenance de
la citerne. Cette gaine est fermée à sa partie postérieure qui est également
perforée de trous de quelques millimètres c;e diamètre.- the release part is made up (plate 2):
- a rigid support tube (7), frustoconical in shape, which covers the nozzle (4)
It has a flange (16), and openings (26) for hanging on the
locking device (20);
- a flexible plastic film sheath - polyethylene or other - which is threaded
pleated on this support tube, its length is adapted to the capacity of
the tank. This sheath is closed at its rear part which is also
perforated with holes a few millimeters in diameter;
Une coiffe (9) en plastique rigide englobe la gaine et le tube. A rigid plastic cap (9) encompasses the sheath and the tube.
Lors du stockage, tube et coiffe sont reliés par des clips (27) (planche 2) afin de constituer un ensemble aisément manipulable. Cette coiffe comporte un rebord (12)qui lui permet d'être saisie par le système de verrouillage (lO)et un fond perforé de fentes radiales (24). During storage, the tube and cover are connected by clips (27) (plate 2) in order to form an easily manipulated assembly. This cap has a flange (12) which allows it to be gripped by the locking system (10) and a bottom perforated with radial slots (24).
Le dispositif fonctionne de la façon suivante : lors de l'ouverture des portes (2) le liquide contenu dans la citerne (1) se précipite dans la conduite (3) et la buse (4). I1 bute sur le fond de la gaine (8) qui est plaquée sur le fond de la coiffe (9). The device operates as follows: when the doors (2) open, the liquid contained in the tank (1) precipitates in the line (3) and the nozzle (4). I1 abuts on the bottom of the sheath (8) which is pressed against the bottom of the cap (9).
La coiffe est libérée par le système de verrouillage (10) et la gaine ce dévide en même temps qu elle se remplit, formant ainsi une sorte de boudin qui chute jusqu'au sol. The cap is released by the locking system (10) and the sheath this unwinds at the same time as it fills, thus forming a kind of tube which falls to the ground.
Des anneaux élastiques (28) disposés de part en part, régulent le mouvement de dévidage de la gaine, si nécessaire, et cet selon la nature du liquide (ou poudre ou granulés) et la nature de l'aéronef et des conditions aérodynamiques propres à celui-ci. Elastic rings (28) arranged right through, regulate the movement of unwinding the sheath, if necessary, and this according to the nature of the liquid (or powder or granules) and the nature of the aircraft and aerodynamic conditions specific to this one.
Une conduite de purge (Il) complétée par des évents (13) assure l'évacuation de l'air contenu dans la conduite et la buse de façon à éviter ltécla tement de la gainqtsous l'effet de la compression,de l'air lors du remplissage. A purge pipe (II) supplemented by vents (13) ensures the evacuation of the air contained in the pipe and the nozzle so as to avoid the bursting of the gain under the effect of compression, air during filling.
Ces dispositions sont complétées par les perforations du fond de la gaine et de la coiffe.These provisions are supplemented by the perforations in the bottom of the sheath and the cap.
Des ouvertures fines (23) pratiquées dans la partie inférieure de la conduite, permettent l'évacuation de suintements éventuelslqui s'évacuent également par les perforations du fond de la gaine et de la coiffe, de façon à éviter l'accumulation d'eau dans la gaine et le déclenchement intempestif du dispositif. Les pertes de liquide, par ces ouvertures, lors du larguage, sont négligeables. Thin openings (23) made in the lower part of the pipe, allow the evacuation of possible seepage which is also evacuated through the perforations in the bottom of the sheath and the cap, so as to avoid the accumulation of water in the sheath and untimely triggering of the device. The losses of liquid, through these openings, during the release, are negligible.
Selon une forme de réalisation préférentielle, le système de verrouillage de la coiff e (9) est constitué de crochets (10) articulés sur la buse (4) par leur axe (17). La fermeture est assurée par des ressorts (29), et l'ouverture par des tirants (22) actionnés par un flotteur (21) articulé autour d'un axe (14). According to a preferred embodiment, the locking system of the cover (9) consists of hooks (10) articulated on the nozzle (4) by their axis (17). The closure is ensured by springs (29), and the opening by tie rods (22) actuated by a float (21) articulated around an axis (14).
Quand l'eau emplit la tuyère (4) le flotteur (2) remonte et déclenche l'ouverture des crochets. La fermeture peut être complétée par un dispositif de sécurité non représenté.When the water fills the nozzle (4) the float (2) rises and triggers the opening of the hooks. The closure can be completed by a safety device, not shown.
Selon les caractéristiques aérodynamiques de l'aéronef, le système de verrouillage peut être fait d'un simple poussoir auquel la coiffe s'arrache sous'la pression de l'eau (planche 3, figure 1). According to the aerodynamic characteristics of the aircraft, the locking system can be made of a simple pusher from which the cover is torn off under the pressure of the water (plate 3, FIG. 1).
Deux poignées (33) (planche 3, figure 2) que l'on peut enfoncer dans les orifices (15) permettent de retirer l'ensemble larguable. Two handles (33) (plate 3, Figure 2) that can be pushed into the holes (15) allow to remove the release assembly.
Les clips (27) retiennent ensemble le tube-support (7) et la coiffe (9) pour faciliter la manipulation, ils doivent être retirés avant la mise en place de l'ensemble sur la buse. The clips (27) hold the support tube (7) and the cap (9) together to facilitate handling, they must be removed before the assembly is placed on the nozzle.
Les clips servent donc au préconditionnement de l'ensemble larguable, qui peut ainsi être mis en place très rapidement. The clips are therefore used to pre-condition the release assembly, which can thus be put in place very quickly.
Selon une formule de réalisation préférentielle, la citerne
(pl.3 fig.3) est constituée d'une enveloppe souple, cylindrique (32). Le cylindre
est entouré d'anneaux élastiques de longueur réglable (33) reliés entre eux par par des liens non élastiques (34). According to a preferred embodiment, the tank
(pl.3 fig.3) consists of a flexible, cylindrical casing (32). The cylinder
is surrounded by elastic rings of adjustable length (33) linked together by non-elastic links (34).
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8615260A FR2610287A1 (en) | 1986-10-30 | 1986-10-30 | Device intended to prevent the dispersion, during their fall, of liquids or powders jettisoned in bulk from an aircraft |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8615260A FR2610287A1 (en) | 1986-10-30 | 1986-10-30 | Device intended to prevent the dispersion, during their fall, of liquids or powders jettisoned in bulk from an aircraft |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2610287A1 true FR2610287A1 (en) | 1988-08-05 |
Family
ID=9340449
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8615260A Withdrawn FR2610287A1 (en) | 1986-10-30 | 1986-10-30 | Device intended to prevent the dispersion, during their fall, of liquids or powders jettisoned in bulk from an aircraft |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2610287A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5549259A (en) * | 1994-02-17 | 1996-08-27 | Herlik; Edward C. | Innovative airtankers and innovative methods for aerial fire fighting |
-
1986
- 1986-10-30 FR FR8615260A patent/FR2610287A1/en not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5549259A (en) * | 1994-02-17 | 1996-08-27 | Herlik; Edward C. | Innovative airtankers and innovative methods for aerial fire fighting |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |