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Aug 5 at 8:05 comment added mike rodent Also off-topic. Please stick to the site's policy.
Jul 5 at 6:48 comment added Peter Kämpf If all you care about is the noise you hear, why don't you MOVE??? Is that too obvious?
Jul 5 at 6:31 comment added mike rodent @PeterKämpf I don't much see the point of off-topic views based on your slavish adoration of airlines and aviation. My question is about reducing noise over London. Any money/extra fuel considerations could be cancelled out by just having fewer flights and/or making flying more expensive. LHR just shouldn't be a hub because it's in the wrong place.
Jul 5 at 5:43 comment added Peter Kämpf it is a bit shortsighted to only look at the descent phase when adding up fuel consumption. If speedbrakes are emploey or the gear lowered prematurely, more energy is needed which has somehow to be put into the airplane before. This could either be a longer cruise or a higher start of the descent. Either way, the fuel which seems to have beed saved during the descent phase has already been wasted before.
Mar 27 at 13:26 vote accept mike rodent
Mar 26 at 12:58 comment added mike rodent @ROIMaison Tailwind, yes, not that surprising. Obviously certainly metereological conditions might make this sort of "composite slope" configuration less practical. In the case of LHR typically (not always) a tailwind (i.e. wind from the east) would result in a switch to "westerly operations" (planes landing from the west).
Mar 26 at 10:26 comment added ROIMaison There are some issues with 3.5 deg mentioned in the paper: "Operations in tailwind conditions on a 3.2° glide slope and a further increase to 3.5° may induce too high sink rates in piloted flight associated with the risk of a go-around." The way I understand it, the steeper descent allows less time to correct sink rates and increases the chance of go-around.
Mar 26 at 10:12 history edited mike rodent CC BY-SA 4.0
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Mar 26 at 9:46 history edited mike rodent CC BY-SA 4.0
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Mar 26 at 9:19 history answered mike rodent CC BY-SA 4.0