An inflatable vision unit (IVU, sold under the trademark Emergency Vision Assurance System or EVAS) is an aircraft safety device which is deployed in the event of heavy smoke in the cockpit, and provides a volume of clear air with clear plastic windows on either side, through which the pilot can see key flight instruments and see out the front windscreen. As of October 2019[update], it was the only such device approved by the Federal Aviation Administration.[1]
Approximate deployed volume and shape of an inflatable vision unit, in gray
The EVAS device was invented by Bertil Werjefelt, with patents issued in 1994 and 2000.[2][3][4] Its installation cost is about US$30,000, roughly equivalent to a cockpit window pane, according to its inventor.[4]
OperationEdit
When stowed, the EVAS measures 3 by 8.5 by 10 inches (8 by 22 by 25 cm).[5] In the event that smoke in the cockpit obscures a pilot's vision and cannot be cleared by a smoke evacuation system, the IVU device is manually unstowed and inflated in under thirty seconds by using a pull tab, making contact with the instrument panel and windscreen.[5] By placing their smoke goggles against the window on the other side of the unit, the pilot is afforded a clear view of their instruments and windscreen.[5][1] The IVU includes a pump, 0.3-micron air filter, and battery to provide for two hours of operation in order to seek an emergency landing.[5][1][6]
AdoptionEdit
Calls by the Independent Pilots Association and other industry bodies to include the device in aircraft followed the September 2010 crash of UPS Airlines Flight 6, in which smoke in the cockpit was a major factor. The IPA represents UPS Airlines pilots. As of October 2010, the FAA had not mandated use of the device.[4]
As of October 2019, over 7000 IVU devices had been delivered, and the device was certified by ten aircraft manufacturers for use in 120 aircraft models.[1]Gulfstream Aerospace was the first manufacturer to incorporate the device, and as of October 2019 had equipped more than a thousand of its aircraft with the technology.[1] The device is available as a standard option on Gulfstream, Bombardier, and Dassault Falcon jet aircraft.[7] The manufacturer claims that the device is included on 86% of U.S. domestic cargo aircraft, and 72% of cargo aircraft worldwide.[8]
ReferencesEdit
^ abcdeHuber, Mark (October 20, 2019). "VisionSafe EVAS Now On More Than 1,000 Gulfstreams". AINOnline.com. Aviation International News. Retrieved 13 April 2021.
^US patent 5318250, Bertil R. L. Werjefelt, "Pilot Visual Assurance Apparatus for an Aircraft Cockpit", issued 1994-06-07
^US patent 6082673A, Bertil R. L. Werjefelt, "Emergency vision device", issued 2000-07-04
^ abcMacDonald, Janelle (November 10, 2010). "Could a low-tech device save lives on planes?". Wave 3 News. Retrieved 13 April 2021.
^ abcdCox, John (February 2, 2010). "Aero-TV: Safety Tip of the Week - The Emergency Vision Assurance System". Aero News Network. Retrieved 13 April 2021.
^"VisionSafe Emergency Vision Assurance System". VisionSafe. Retrieved 13 April 2021.
^"Union Support and Legislation". VisionSafe. Retrieved 13 April 2021.
October 19, 2023
inflatable, vision, unit, inflatable, vision, unit, sold, under, trademark, emergency, vision, assurance, system, evas, aircraft, safety, device, which, deployed, event, heavy, smoke, cockpit, provides, volume, clear, with, clear, plastic, windows, either, sid. An inflatable vision unit IVU sold under the trademark Emergency Vision Assurance System or EVAS is an aircraft safety device which is deployed in the event of heavy smoke in the cockpit and provides a volume of clear air with clear plastic windows on either side through which the pilot can see key flight instruments and see out the front windscreen As of October 2019 update it was the only such device approved by the Federal Aviation Administration 1 Approximate deployed volume and shape of an inflatable vision unit in grayThe EVAS device was invented by Bertil Werjefelt with patents issued in 1994 and 2000 2 3 4 Its installation cost is about US 30 000 roughly equivalent to a cockpit window pane according to its inventor 4 Operation EditWhen stowed the EVAS measures 3 by 8 5 by 10 inches 8 by 22 by 25 cm 5 In the event that smoke in the cockpit obscures a pilot s vision and cannot be cleared by a smoke evacuation system the IVU device is manually unstowed and inflated in under thirty seconds by using a pull tab making contact with the instrument panel and windscreen 5 By placing their smoke goggles against the window on the other side of the unit the pilot is afforded a clear view of their instruments and windscreen 5 1 The IVU includes a pump 0 3 micron air filter and battery to provide for two hours of operation in order to seek an emergency landing 5 1 6 Adoption EditCalls by the Independent Pilots Association and other industry bodies to include the device in aircraft followed the September 2010 crash of UPS Airlines Flight 6 in which smoke in the cockpit was a major factor The IPA represents UPS Airlines pilots As of October 2010 the FAA had not mandated use of the device 4 As of October 2019 over 7000 IVU devices had been delivered and the device was certified by ten aircraft manufacturers for use in 120 aircraft models 1 Gulfstream Aerospace was the first manufacturer to incorporate the device and as of October 2019 had equipped more than a thousand of its aircraft with the technology 1 The device is available as a standard option on Gulfstream Bombardier and Dassault Falcon jet aircraft 7 The manufacturer claims that the device is included on 86 of U S domestic cargo aircraft and 72 of cargo aircraft worldwide 8 References Edit a b c d e Huber Mark October 20 2019 VisionSafe EVAS Now On More Than 1 000 Gulfstreams AINOnline com Aviation International News Retrieved 13 April 2021 US patent 5318250 Bertil R L Werjefelt Pilot Visual Assurance Apparatus for an Aircraft Cockpit issued 1994 06 07 US patent 6082673A Bertil R L Werjefelt Emergency vision device issued 2000 07 04 a b c MacDonald Janelle November 10 2010 Could a low tech device save lives on planes Wave 3 News Retrieved 13 April 2021 a b c d Cox John February 2 2010 Aero TV Safety Tip of the Week The Emergency Vision Assurance System Aero News Network Retrieved 13 April 2021 FAQs VisionSafe EVAS www visionsafe com Retrieved 2022 02 04 VisionSafe Emergency Vision Assurance System VisionSafe Retrieved 13 April 2021 Union Support and Legislation VisionSafe Retrieved 13 April 2021 Retrieved from https en wikipedia org w index php title Inflatable vision unit amp oldid 1128195789, wikipedia, wiki, book, books, library,
