US3157885A - Automatically pressurized flying suit - Google Patents

Automatically pressurized flying suit Download PDF

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Publication number
US3157885A
US3157885A US17894062A US3157885A US 3157885 A US3157885 A US 3157885A US 17894062 A US17894062 A US 17894062A US 3157885 A US3157885 A US 3157885A
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US
United States
Prior art keywords
helmet
pressure
cylinder
suit
members
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
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English (en)
Inventor
Lobelle Marcel Jules Odilon
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.)
ML Aviation Ltd
Original Assignee
ML Aviation Ltd
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 ML Aviation Ltd filed Critical ML Aviation Ltd
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Publication of US3157885A publication Critical patent/US3157885A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B64D10/00—Flight suits
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B17/00—Protective clothing affording protection against heat or harmful chemical agents or for use at high altitudes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/38—Electronic maps specially adapted for navigation; Updating thereof
    • G01C21/3804—Creation or updating of map data
    • G01C21/3807—Creation or updating of map data characterised by the type of data
    • G01C21/3815—Road data
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/1842—Ambient condition change responsive
    • Y10T137/1939—Atmospheric
    • Y10T137/2012—Pressure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2544—Supply and exhaust type

Definitions

  • This invention relates to flying helmets, particularly those of the fully-pressurised type as disclosed in our copending application Serial No. 178,844, filed March 12, 1962.
  • Such helmets when used in conjunction with fullypressurised suits allow the wearer to continue normal flight even after sudden cockpit decompression, for example, after breakage of the canopy at high altitude.
  • Such helmets must be fitted to the suit by a pressuretight connection and when this is done there is a tendency on increase in internal suit and helmet pressure for the helmet to rise on the wearers head by stretching the fabric of the suit around the neck.
  • This is of course uncomfortable and provision has been made for fixing the helmet to the back and front of the suit by cords which include an adjustable strap so that the wearer can adjust the position of the helmet on change of pressure. Sudden decompression of the cockpit however automatically initiates immediate full pressurisation of the helmet, with the result that the helmet will rise very rapidly and probably injure the wearer, since he has no time to make the necessary manual adjustment.
  • apparatus for preventing such relative vertical movement includes two relatively movable members of which when in use the first is fixed to the suit and the second is connected to the helmet, and means responsive to the pressure in the helmet for maintaining the relative positions of the two members so that for any pressure within the helmet the helmet does not rise relative to the suit.
  • the first and second members are a cylinder and a piston respectively, the pressure within the cylinde-r being controlled by the pressure in the helmet.
  • a bellows arrangement could be used.
  • the pressure in the cylinder is conveniently obtained from a source of air at a pfessure much greater than the pressure within the helmet and the pressure in the helmet controls a valve for regulating the supply of this high pressure air to the cylinder, and an exhaust valve for the cylinder.
  • FIGURE 1 is a schematic perspective view of part of the front of a flying suit and helmet
  • FIGURE 2 is a schematic perspective view of the rear of the suit and the helmet.
  • FIGURE 3 is a diagrammatic sectional view through the suit and helmet.
  • the pilot Wears a helmet 1 and a suit 2 both of which can be pressurised if the cabin pressure in his aircraft falls below a certain value.
  • a helmet 1 and a suit 2 both of which can be pressurised if the cabin pressure in his aircraft falls below a certain value.
  • the helmet is provided with an oxygen mask 5.
  • Formed round the lower part of the helmet is a flange 6 and this cooperates with a corresponding flange 7 forming a rigid ring at the top part of the neck of the suit.
  • a cord 10 Fixed to the flange 7 are two eyelets 8 and 9 through which passes a cord 10. The free ends of this cord are clamped at 11 to a panel 12 which is sewn into the back of the pressure suit. The cord passes round a pulley 13 which is mounted to rotate in a sheave 14 connected to a strap 15 the length of which is adjustable.
  • the opposite end of the strap 15 is fixed to a piston 16 which is mounted to work in a cylinder 17 and is biased away from the top of this cylinder by a compression spring 18.
  • the .piston and cylinder are enclosed in a box 19 which is stitched to the front of the suit and is also held in position by a pair of straps 20.
  • the con tents of this box 19 are shown schematically in FIGURE 3 and are indicated generally by the arrow 21.
  • FIGURE 3 also shows a schematic section through the helmet and the suit and it will be seen from this that the suit includes an inner bladder 22.
  • This is sealed oil from the main body of the pressure suit and is connected to the interior of the helmet by a pipe indicated at 23. It is also connected by a further pipe indicated at 24 to a hollow expandable ring 25 surrounding the mans neck and stitched within the neck portion of the suit.
  • the bladder 22 is provided and on emergency this bladder and the helmet together with the ring 25 are all pressurised at the same time before the pressurising air is fed into the main body of the suit.
  • the ring 25 when inflated is elfective to seal off the interior of the helmet from the interior of the main part of the suit so that the high pressure air is unable to leak into the main part of the suit from the helmet.
  • Suits with the second bladder are well known in the art and the bladders are commonly known as partial pressure bladders.
  • Movement of the piston 16 Within the cylinder 17 is controlled by high pressure air from a capsule 26 which is also housed within the box 19.
  • This source could alternatively be fixed in the aircraft although if it is arranged this way there is a further connection between the pilot and the aircraft to be broken if the pilot has to be ejected.
  • the supply of air from the reservoir 26 is controlled by a slide valve 27 which is able to move to the right as seen in FIGURE 3 to uncover an orifice 23 leading into a chamber 29 which also communicates with a tube 30 leading into the cylinder 17.
  • Movement of the slide valve is controlled by a further piston 31 Working in a cylinder 32 and biased to the left-hand side of this cylinder as seen in FIGURE 3 by a compression spring 33.
  • This piston has a shank 34 the end of which is a tight fit within a smaller diameter extension 35 of the cylinder 32 and from this shank there projects a rod 36 which passes through a sealing gland 37 between the extension 35 and the chamber 29 and is fixed at its other end to the movable member 27 of the slide valve.
  • the outlet from the cylinder 17 is by way of a pipe 38 into a chamber 39 having an outlet orifice til from which a pipe 41 leads into the main body of the pressure suit.
  • the outlet orifice can be adjusted by movement of a needle 42 and this needle is carried on the end of a shank 43 which passes through a sealing gland 44 between the chamber 39 and a further chamber 45 and ends in a disc 46 which is free to move in an internal bore 47 formed in the sliding member 27.
  • the disc is biased to the right as seen in FIGURE 3 by a compression spring 48 and it will be seen that the mechanical linkage between the valves is such that when the slide valve is fully closed the needle valve controlling the exhaust from the cylinder is fully open.
  • apparatus for preventing relative vertical movement between said helmet and body portions comprising: a cylinder having an inlet and an outlet, said cylinder forming a first one of two relatively movable members; a piston mounted for movement within said cylinder and forming a second one of said members, one of said members being fixed to said suit and the other of said members having a connection to said helmet; a source of air at a pressure greater than the pressure within said helmet; a first valve connected between said source and said cylinder inlet and responsive to said helmet pressure for regulating supply of said air from said source to said cylinder; a second valve also responsive to helmet pressure and connected to said outlet of said cylinder for regulating the rate of exhaust of air from said cylinder, said response of said valves being such that said members maintain their relative positions whatever the value of said helmet pressure so that said helmet does not rise relative to said suit.
  • connection comprises a cord fixed to the hack of said suit, connected intermediate its length to said helmet,
  • Apparatus in accordance with claim 3 including a pulley mounted on said adjustable strap and wherein said helmet includes a pair of eyelets, one connected to each side thereof and wherein said cord is fixed at both ends

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Remote Sensing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Toxicology (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Pulmonology (AREA)
  • Automation & Control Theory (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
US17894062 1961-03-14 1962-03-12 Automatically pressurized flying suit Expired - Lifetime US3157885A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB931261A GB941494A (en) 1961-03-14 1961-03-14 Improvements relating to apparatus for use with flying helmets

Publications (1)

Publication Number Publication Date
US3157885A true US3157885A (en) 1964-11-24

Family

ID=9869557

Family Applications (1)

Application Number Title Priority Date Filing Date
US17894062 Expired - Lifetime US3157885A (en) 1961-03-14 1962-03-12 Automatically pressurized flying suit

Country Status (3)

Country Link
US (1) US3157885A (fr)
BE (1) BE615080A (fr)
GB (1) GB941494A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3286274A (en) * 1964-04-07 1966-11-22 James H O'kane Pressure suit tie-down mechanism
US3505677A (en) * 1966-12-26 1970-04-14 Ind Des Et Piel S I D E P Soc Diving casque
USD285741S (en) 1983-10-10 1986-09-23 Jean Gallet et Fils S.A. Combined helmet and mask
US5050240A (en) * 1990-05-14 1991-09-24 Kaiser Aerospace And Electronics Corporation Air cushion helmet support and ventilation system with air pressure regulator
EP1813528A1 (fr) * 2006-01-31 2007-08-01 Saab Ab Système de retenue pour casque

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB836925A (en) * 1957-06-20 1960-06-09 Eric Hardman Taylor Improvements in or relating to pressure helmets
US2973521A (en) * 1959-03-03 1961-03-07 Jr Richard J Mcgowan Full pressure suit helmet and torso tiedown system
US3042926A (en) * 1958-09-26 1962-07-10 Int Latex Corp Pressure suit for high altitude flying

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB836925A (en) * 1957-06-20 1960-06-09 Eric Hardman Taylor Improvements in or relating to pressure helmets
US3042926A (en) * 1958-09-26 1962-07-10 Int Latex Corp Pressure suit for high altitude flying
US2973521A (en) * 1959-03-03 1961-03-07 Jr Richard J Mcgowan Full pressure suit helmet and torso tiedown system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3286274A (en) * 1964-04-07 1966-11-22 James H O'kane Pressure suit tie-down mechanism
US3505677A (en) * 1966-12-26 1970-04-14 Ind Des Et Piel S I D E P Soc Diving casque
USD285741S (en) 1983-10-10 1986-09-23 Jean Gallet et Fils S.A. Combined helmet and mask
US5050240A (en) * 1990-05-14 1991-09-24 Kaiser Aerospace And Electronics Corporation Air cushion helmet support and ventilation system with air pressure regulator
EP1813528A1 (fr) * 2006-01-31 2007-08-01 Saab Ab Système de retenue pour casque
US20110093999A1 (en) * 2006-01-31 2011-04-28 Saab Ab Helmet restraint system
US8046846B2 (en) * 2006-01-31 2011-11-01 Saab Ab Helmet restraint system

Also Published As

Publication number Publication date
GB941494A (en) 1963-11-13
BE615080A (fr) 1962-09-14

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