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Re: Another Airbus down ....

Von: Brian Reay (see@website.invalid) [Profil]
Datum: 01.07.2009 19:05
Message-ID: <OHM2m.10699$Xb3.7448@newsfe17.ams2>
Newsgroup: uk.radio.amateur

"Brian Morrison" <bdm@fenrir.org.uk> wrote in message
news:20090701093949.3fe70761@peterson.fenrir.org.uk...
> On Wed, 1 Jul 2009 06:49:41 +0100
> "Brian Reay" <seewebsite@invalid.com> wrote:
>
>>
>> "Brian Morrison" <bdm@fenrir.org.uk> wrote in message
>> news:20090701001000.475fd295@peterson.fenrir.org.uk...
>> > On Tue, 30 Jun 2009 23:56:17 +0100
>> > Dave <davenpat@btopenworld.com> wrote:
>> >
>> >> Brian Morrison wrote:
>> >> > On Tue, 30 Jun 2009 23:22:34 +0100
>> >> > Walt Davidson <g3nyy@invalid.invalid> wrote:
>> >> >
>> >> >> overran the runway after aborting the takeoff well above
rotation
>> >> >> speed.
>> >> >
>> >> > That's what V1 is for, any problem at or above that speed and you
>> >> > take
>> >> > the problem into the air.
>> >>
>> >> So what is V2 about then?
>> >
>> > Minimum safe speed after rotation to maintain a positive climb rate,
>> > see here:
>> >
>> > http://en.wikipedia.org/wiki/V_speeds
>> >
>>
>> V1  relates to "stopping distance", not ability to "fly".
>>
>> Read your own reference.
>
> Er, where did I say that V1 related to flying?

Think about it. You get to V1, so don't have the runway to stop but can't
make V2, you are not  going to be flying anywhere.
I agree that, once pass V1 and V2 you would take off but only if you make
V2. In essence V1 is the last point were is it safe to abort intentionally.
If you go through V1 and don't make V2, you will end up in the gravel at the
end of the runway. The choice is to do so while rolling and braking or, if
you have managed to "get off" but not maintain flight, "drop in".

--
73
Brian G8OSN/W8OSN
www.g8osn.org.uk
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