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Air travel has gotten more challenging and preparing

Hot air is less dense than cold air, meaning aircraft require more engine power to generate the same thrust and lift as they would in cooler climes. The conclusions are in part logistical and in part safety, as author and pilot Patrick Smith explains in his book, Cockpit Confidential.

“Hot air is less dense than cold, negatively affecting both lift and engine performance,” he writes. “The take-off roll will be longer and the climb shallower, and in very hot temperatures, a plane may no longer meet the safety margins for a particular runway – climb gradient parameters and the weight is determined for every take-off based on weather and runway length.

“Going a short distance with limited fuel is unlikely to be a problem, but full tanks or a heavy payload can put you up against the limits, and cargo or people will sometimes need to be bumped.”

  1. A range of 17,960 kilometers would not cut it on a route of 17,000 kilometers, there would have to be an allowance for possible headwinds, airport diversions and holding time awaiting landing.

    I would not want to be on an aircraft that had only a little more than one hour’s reserve fuel at uts destination.

  2. Are we moving to the Japanese overnight railway accommodation module – stacked tubes were people crawl into & lie down in to sleep or watch TV?

    Which is better for a 20 hour Sydney – London non stop flight for the passengers? Maybe say 2 x 8 hour “nighty night pills”.

    Other in flight services for long haul passengers- do you tax, nails , hair cutters , massages , etc?

    Long haul flights & recovery is ghastly.

  3. There is a metric here which the airlines like to call “cost” but we all know is actually “price” The aircraft can probably configured to do it. The problem is, that they cannot price the ticket rationally to make it attractive enough to their modelling s/w

    Most of the flying websites I visit have two major obsessions: how much is the ticket, and how much legroom and seat-width have they configured the aircraft for.

    Either they need “because we can” fiat override by the CEO and board, or they need to adopt a new pricing model. It’s a non-linear equation to match what you can fit inside an airplane, what you can sell a set at, and how many of them you can sell.

    1. since the reduction in first-class I’m thinking it’s more about bums on seats – filling the last seats with various strategies including code-share. Low cost airlines need to fill every seat – that is if they’re not making all their profit from the add-on ‘special’ hotel deals at remote airport sites in Croatia or wherever.

  4. Airlines may well be able to design aircraft that can fly longer and longer non-stop distances but I think ‘Passenger endurance’ will reach a limit. The thought of flying non stop to say New York doesn’t sound overly attractive and god forbid with children.


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