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Heliox is a breathing gas mixture of helium (He) and oxygen (O 2). It is used as a medical treatment for patients with difficulty breathing because this mixture generates less resistance than atmospheric air when passing through the airways of the lungs, and thus requires less effort by a patient to breathe in and out of the lungs.
The following is the list of purpose-built passenger jet airliners.It excludes turboprop and reciprocating engine powered airliners. It also excludes business jets and aircraft designed primarily for the transportation of air cargo.
Heliox's low density produces a lower Reynolds number and hence higher probability of laminar flow for any given airway. Laminar flow tends to generate less resistance than turbulent flow. In the small airways where flow is laminar, resistance is proportional to gas viscosity and is not related to density and so heliox has little effect
The aircraft involved was a Boeing 767-269ER registered as N251MY with serial number 23280. [4] The 131st Boeing 767 built, it first flew on January 30, 1986, and was delivered to Kuwait Airways approximately seven weeks later. While owned by Kuwait Airways, the airframe was leased at times to EgyptAir, Qatar Airways, and Polynesian Airlines.
Single-seat counter-insurgency aircraft based on the Cavalier Mustang/North American P-51 Mustang: PA-49 0 Proposed single-engine turobprop variant of the Altaire PA-50 Freedom Family 0 Four-seat personal/trainer aircraft to replace the Cherokee PA-60 Aerostar: 1967 1,010 Six-seat pressurized twin, Piper purchased the design from Ted R. Smith ...
The aircraft would replace some of the airline's fleet of Boeing 747-400s. [23] Options for 18 Boeing 787 aircraft, part of the original contract signed in 2007, have been converted into firm orders for delivery between 2017 and 2021. [24] On 26 June 2013, British Airways took delivery of its first Boeing 787 Dreamliner.
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