EP0785887B1 - Bouee aeroportee largable - Google Patents

Bouee aeroportee largable Download PDF

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Publication number
EP0785887B1
EP0785887B1 EP95935492A EP95935492A EP0785887B1 EP 0785887 B1 EP0785887 B1 EP 0785887B1 EP 95935492 A EP95935492 A EP 95935492A EP 95935492 A EP95935492 A EP 95935492A EP 0785887 B1 EP0785887 B1 EP 0785887B1
Authority
EP
European Patent Office
Prior art keywords
balloon
buoy
air
beak
opening
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.)
Expired - Lifetime
Application number
EP95935492A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0785887A1 (fr
Inventor
Vito Suppa
Pascal Bocquillon
Bernard Loubieres
Gilbert Oddoart
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thales SA
Original Assignee
Thomson CSF SA
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 CSF SA filed Critical Thomson CSF SA
Publication of EP0785887A1 publication Critical patent/EP0785887A1/fr
Application granted granted Critical
Publication of EP0785887B1 publication Critical patent/EP0785887B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B22/00—Buoys
    • B63B22/003—Buoys adapted for being launched from an aircraft or water vehicle;, e.g. with brakes deployed in the water
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B22/00—Buoys
    • B63B22/22—Inflatable buoys with gas generating means

Definitions

  • the present invention relates to airborne buoys which are intended to be dropped from an aircraft to float at the sea surface by supporting variable immersion of the sensors of measure whose signals are generally retransmitted by radio to the carrier aircraft. It applies inter alia to underwater detection.
  • the balloon also has on the flanks of its half upper pockets 108 which stabilize the movement of the buoy during its descent to avoid, or at least strongly imitate, oscillations.
  • these pockets have a triangular shape truncated towards the top and they extend substantially over the entire length of the part upper frustoconical of the balloon. They are fixed on the sides and open at the top and bottom. So the air rushes in, inflates them and escapes through the upper part which therefore plays the role of the hole located at the center of a parachute.
  • the balloon does not has no stabilization pockets located at the top. All on the contrary, these pockets are located on the lower part of the balloon. In in addition to the air inlets, if they are properly made in the wall of the balloon, are clearly located at the connection between the body and the ball and at the base of the pockets.
  • the invention proposes a buoy airborne airdrop intended to be dropped in flight from an aircraft, type comprising a body surmounted by an inflatable balloon provided at its upper part of aerodynamic stabilization pockets, mainly characterized in that the connection between the body and the balloon is tight and in that this balloon has at its bottom at least one spoiler 205 forming an air intake to allow inflation of the balloon under the aerodynamic air pressure after the buoy is released.
  • the spoiler has a shape triangular whose opening is directed towards the bottom of the balloon so to form a scoop for air and it comes to cover at its upper part a opening in the wall of the balloon ci forming air inlet in this one.
  • the buoy includes a valve check valve located on the inner wall of the balloon opposite the opening forming air inlet for the spoiler.
  • the spoiler is formed in one piece triangular fabric with a flexible blade at its bottom, the natural shape is curved to keep the spoiler open and which can be laid flat to allow the front balloon to be folded dropping the buoy.
  • the lower part of the spoiler is located approximately a third of the height of the frustoconical part bottom of the balloon.
  • the stabilization pockets aerodynamics have a reduced height and a higher opening enlarged to allow the buoy to be completely stabilized during its descent after ejection from the aircraft.
  • the buoy according to the invention includes a body 201 truncated on the drawing and whose length is substantially equal to a third of the length of the body 101 of the buoy according to the prior art.
  • This body has neither opening at its upper part, no shovel, unlike the one shown in figure 1.
  • the buoy also includes a bitronconical balloon 202 all quite similar in form and size to that of art prior.
  • This balloon is provided at its upper part with pockets of stabilization 208 whose appearance and role are similar to those of bags of the prior art, but the dimensions of which are, according to the invention, significantly reduced in height and whose upper opening is significantly wider.
  • the invention proposes to place on the lower part of the balloon, at least a spoiler 205 forming an air intake and which covers an opening 206 pierced in the wall of the balloon and forming an air inlet. This opening is closed on the inside of the balloon by a non-return valve 207 shown schematically in the figure.
  • a blade was attached to the lower part of the triangle flexible 310, made of flexible plastic for example, which can lie flat when of the balloon area when placed in its protective cover at when the buoy was made.
  • the flexible blade returns to its natural shape hoop and imposes on the triangular fabric piece a scoop shape, so that the air easily gets inside it. This air then enters the balloon through a circular opening 206 located at the height of the point of the triangle formed by the spoiler.
  • the check valve located inside the balloon is preferably formed by a piece of rectangular fabric of the same kind than that of the balloon, glued or welded by two of these opposite sides on the inner surface of the balloon so as to cover the opening 206.
  • This valve thus makes it possible to imitate the flow of air admitted during inflation of the balloon after ejection from the carrier aircraft, which limits the risks bursting of this balloon during inflation.
  • the buoy floats on the surface of the water, as shown in Figure 4, a small amount of water gets inside it, as already explained in the description of the prior art, and the non-return valve blocks the outlet of this water, and possibly air, when the balloon is shaken violently by a breaking wave. In this way, we ensure the maintenance of the buoyancy of the buoy even in the event of a storm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Toys (AREA)
EP95935492A 1994-10-18 1995-10-13 Bouee aeroportee largable Expired - Lifetime EP0785887B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9412411 1994-10-18
FR9412411A FR2725684A1 (fr) 1994-10-18 1994-10-18 Bouee aeroportee largable
PCT/FR1995/001351 WO1996011837A1 (fr) 1994-10-18 1995-10-13 Bouee aeroportee largable

Publications (2)

Publication Number Publication Date
EP0785887A1 EP0785887A1 (fr) 1997-07-30
EP0785887B1 true EP0785887B1 (fr) 1998-12-02

Family

ID=9467954

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95935492A Expired - Lifetime EP0785887B1 (fr) 1994-10-18 1995-10-13 Bouee aeroportee largable

Country Status (6)

Country Link
US (1) US5795203A (enrdf_load_stackoverflow)
EP (1) EP0785887B1 (enrdf_load_stackoverflow)
AU (1) AU693274B2 (enrdf_load_stackoverflow)
DE (1) DE69506437T2 (enrdf_load_stackoverflow)
FR (1) FR2725684A1 (enrdf_load_stackoverflow)
WO (1) WO1996011837A1 (enrdf_load_stackoverflow)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2744870B1 (fr) * 1996-02-13 1998-03-06 Thomson Csf Procede pour controler la navigation d'une antenne acoustique lineaire remorquee, et dispositifs pour la mise en oeuvre d'un tel procede
FR2776161B1 (fr) 1998-03-10 2000-05-26 Thomson Marconi Sonar Sas Antenne d'emission acoustique annulaire demontable
US6082675A (en) * 1998-08-17 2000-07-04 The United States Of America As Represented By The Secretary Of The Navy Standoff delivered sonobuoy
JP2000128087A (ja) * 1998-10-19 2000-05-09 Japan Aircraft Mfg Co Ltd 水上浮標装置
FR2800229B1 (fr) 1999-10-22 2002-04-05 Thomson Marconi Sonar Sas Transducteur acoustique sous-marin a large bande
FR2809580B1 (fr) 2000-05-26 2002-08-30 Thomson Marconi Sonar Sas Transducteur electrodynamique pour acoustique sous-marine
RU2166455C1 (ru) * 2000-07-05 2001-05-10 Центральный научно-исследовательский институт им. акад. А.Н. Крылова Способ умерения параметрической угловой качки осесимметричных буев
US8939056B1 (en) * 2012-04-20 2015-01-27 Barron Associates, Inc. Systems, devices, and/or methods for managing targeted payload descent
FR2995588B1 (fr) * 2012-09-18 2015-12-11 Dcns Systeme fonctionnel a changement de milieu air/eau tel que notamment de contre mesure sous marine destine a etre lance notamment a partir d'un batiment de surface
FR3015785B1 (fr) * 2013-12-20 2015-12-25 Thales Sa Antenne omnidirectionnelle compacte pour sonar trempe

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2219598B1 (enrdf_load_stackoverflow) * 1973-02-23 1978-12-01 Thomson Csf
IT1052833B (it) * 1974-12-17 1981-07-20 Thomson Csf Dispositivo di raffreddamento per componenti a forte dissipazione termica
FR2431419A1 (fr) * 1978-07-18 1980-02-15 Thomson Csf Bouee aeroportee largable
FR2450193A1 (fr) * 1979-02-27 1980-09-26 Thomson Csf Bouee aeroportee largable a declenchement inertiel
FR2464179A2 (fr) * 1979-08-28 1981-03-06 Thomson Csf Bouee aeroportee largable
US4379534A (en) * 1981-03-02 1983-04-12 The United States Of America As Represented By The Secretary Of The Navy Cargo lift system
FR2614598B1 (fr) * 1987-04-29 1989-06-09 Thomson Csf Bouee aeroportable largable, notamment pour ecoute sous-marine
FR2654065B1 (fr) * 1989-11-03 1993-05-28 Laloubere Jean Claude Ballon flotteur pour largage d'une charge a la surface d'un plan d'eau.
GB2250960B (en) * 1990-12-18 1994-08-17 Secr Defence Float for an air-launched sonobuoy

Also Published As

Publication number Publication date
AU3749395A (en) 1996-05-06
DE69506437T2 (de) 1999-04-22
FR2725684A1 (fr) 1996-04-19
EP0785887A1 (fr) 1997-07-30
FR2725684B1 (enrdf_load_stackoverflow) 1997-02-28
WO1996011837A1 (fr) 1996-04-25
DE69506437D1 (de) 1999-01-14
US5795203A (en) 1998-08-18
AU693274B2 (en) 1998-06-25

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