Thyunda said:
Vrach said:
Thyunda said:
Vrach said:
The airplane has seats. If you can fit into a seat, that seat has been made for you, regardless of your weight.
The luggage compartment does not have seats. It has a certain amount of space. And to prevent people from saying "oh I've got just the one bag, it's this grand piano right here", it's measured in weight.
So long answer: don't be stupid
Short answer: no
Take it you don't know much about planes then? Or how they organise the passengers to equalise weight?
I think it's a good idea. First off, it's rational. Maybe a little invasive, though. But...I suppose if you only weigh people who are obviously outside the optimal range, it should be okay. Fat people aren't exactly ignorant of their own weight, and they'd be prepared for it.
At the very least, it'll make an unhealthy lifestyle expensive, which would encourage a healthier population.
In theory.
If a plane is filled with fat people, will it go down? Cause if not, you need to read what I said again, as your response has nothing to do with what I've said.
Yes. Actually. There was a
Seconds From Disaster episode about a small commercial plane that went down immediately after taking off because it couldn't handle the weight of its overweight passengers.
Funny. I was weighed when I got on a small plane... (capacity of 15 passengers). Aviation safety authorities also tend to state that the smaller the plane, the heavier you have to assume each passenger is.
(The figures I saw suggested a large commercial jet goes with an average of 78 kg, while smaller ones use 82.)
Running a flight sim I also noticed that a small plane designed for 7 passengers, cannot actually fly with even 7 passengers of average weight without reducing the fuel load (and thus the range) to about 40% of maximum.
In any event, this is all kind of arbitrary. If a large aircraft is 90% empty. (Something I've experienced surprisingly often - in fact on one of these flights they let me on with about about 50% more than the luggage allowance without charging me), then the weight of the plane itself is going to mean a lot more than the weight of the passengers.
Take for instance the A380 - http://en.wikipedia.org/wiki/Airbus_A380
It's seating capacity is about 644 passengers for a typical configuration.
Typical Operating empty weight is listed as 276,800 kg (That's the plane + crew & everything needed to operate it except fuel)
Using typical figures for a plane that size (78 kg/ passenger + 20 kg luggage), 644 passengers weigh (50232 + 12880 kg) = 63112
The plane also has to shift the weight of it's fuel, so actual costs are surprisingly complex.
But it should be clear that the payload of a fully loaded A380 is just 22% of the overall weight of the aircraft.
That means, that (very) roughly speaking (remember, the way fuel is loaded and burnt makes the calculation non-linear), the cost of flying the aircraft from point A to point B when empty is around 80% of the cost of when it is full.
Therefore, so long as you don't actually overload the plane entirely, doubling or even tripling the weight of an individual passenger would not triple the operating cost, but increase it by a factor of (0.2*3)+0.8 = 1.4
Given that 80% of the cost is moving the aircraft itself around, the cost per passenger as defined by weight has to vary A LOT for it to mean anything.
if you increase a passenger's weight to 10 times normal, (Remember, that's 780 kg. Even people considered morbidly obese are rarely that much over 200. 780 would be world record candidate material), the increase in cost to move this passenger is still only:
0.8 + 2 = 2.8 times that of a more typical passenger.
And that assumes the plane is full.
If it is only 10% loaded, the passengers only represent 2% of the weight. Now this means the cost for one ordinary passenger is 1, the cost for our record-holding obese person is 0.97 + (10 * 0.03) = 1.27
For someone who is perhaps obese rather than a freak of nature, they'd be maybe 0.97 + (1.5 * 0.03) = 1.015
Can you honestly say that these figures are significant enough to bother with the kind of measures that would be required to figure out who is heavy enough to pay extra?
At least someone occupying more than one seat actually does legitimately cost twice as much to move around. (although this too is meaningless unless the plane is heavily loaded.)
The idea isn't worth the hassle really.