Mr Travel wrote in
news:4736de5a$0$8689$4c368faf@roadrunner.com:
> Marty Shapiro wrote:
>
>> "Chilly8" wrote in news:fh3me6$j38$1@aioe.org:
>>
>>
>>
>>>
>>>Vegas only has ONE runway, that could handle 747-400 or
>>>A340 aircraft, needed for flights between vegas and China.
>>>7L/25R, with a length of 14495 ft, is the only runway long
>>>enough to handle 747 or A340 aircraft. A 747 needs at least
>>>11,000 feet of runway for takeoff, so all the other runways
>>>are not long enough.
>>>
>>>
>>>
>>
>>
>> Nonsense.
>>
>> Instead of using your silly game, why don't you try looking
>> at the
>> runway specifications for the 747 as provided by Boeing. If you had,
>> you would have known that a 747-400 can use a runway under 6,000' in
>> some conditions. You only need 7L/25R under max load and very high
>> density altitude conditions.
>>
>> At SFO, you can watch 747's take off from 28L (10,602') and
>> 1R
>> (8,646'). A friend took a great picture of one lifting off on 1R as
>> I overflew SFO at 3,500'. He was airborn by the middle of the
>> intersection of 1R with 28L and 28R, under 5,000' from the 1R
>> threshold.
>>
>> Zero wind, standard temperature, 0 gradient, 0' pressure
>> altitude, a
>> 747-400 with the CF6-80C2B1 engines can use a 6,500' runway at
>> 700,000 lbs
>
>>
>
> Do you expect a flight from LAS to PEK would be flying a minimum
> weight?
>
Please go back and read what the OP said - "A 747 needs at least
11,000 feet of runway for takeoff, so all the other runways are not long
enough" That statement is utter nonsense, as the Boeing specs for the 747-
400 clearly show.
As for KLAS to ZBAA, that would depend on 1) how much freight, 2) how
many passengers, and 3) the weather conditions (wind, pressure altitude,
and temperature). 25R/7L will almost always be required in the summer at
KLAS. The Boeing tables on their web site are all based on 0 wind and 0
runway slope. Increase the wind, and you need less runway. Up slope needs
more, down slope needs less.
Not all flights take off at max weight. You don't put more fuel
onboard than is necessary to meet your required reserves, as it costs fuel
to fly fuel.
Oh, 700,000 lbs is NOT minimum weight.
--
Marty Shapiro
Silicon Rallye Inc.
(remove SPAMNOT to email me) |