John R. Copeland wrote:
> "Jim Carter" <jim.carter@[EMAIL PROTECTED]
> wrote in message
> news:jAjBj.15285$0o7.14324@[EMAIL PROTECTED]
>> Watching the videos of the heavies crabbing to a landing in high cross
>> winds prompts me to ask: why don't they use asymmetrical thrust instead
>> of kicking it straight in the flare?
>>
>> Even in a single, why don't we see more forward slips to a landing
>> instead of crab, kick, and pray?
>>
>> Have these techniques gone the way of the steam gauges?
>>
>
> You want to rethink that a little, Jim?
> How would asymmetrical thrust align the aircraft with the runway?
>
> Also, forward slips are used to lose altitude. Sideslips compensate
> crosswinds.
>
> But to answer that question anyway, neither steam gauges nor sideslips
are
> gone. I use both of them in my light twin, except that I try to keep my
> transition from crab to slip reasonably smooth, and combined with my
> pre-landing flare.
When I went thru multi training we used asymmetrical thrust a lot in
Oklahoma (cause the wind never stops) to control approach attitudes. I
hadn't thought the lag time was still that significant on the modern
turbofans, so I made a bad assumption that the technique would be
applicable to the heavies.
It's been so long now I'm not sure I remember the technique right off
hand,
but I believe we carried more power on the upwind engine and banked into
the wind. We didn't have to ride the rudders like in a single engine and
it
was much easier, prettier, and somewhat more stable in a crosswind.
You're right - I got my slips reversed. Side slip into the wind, forward
slip toward the runway. It's all relative to the line of travel.
I wonder what the response time is for the large modern turbofans.
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