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Crosswind Landings... But airspeed?



 
 
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  #1  
Old September 29th 05, 07:21 AM
Jmarc99
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Default Crosswind Landings... But airspeed?

After having read all the posts in the previous thread, no one said a word
about de right airspeed to keep along the final approach... whatever this is done
with a sideslip or crabbing.

I am wondering what should be the right airspeed (calculated or not, 1.3 Vs + wind speed)
to get in a crosswind landing.

What about a straight 90 degrees crosswind, or more?

I wouldn't turn back ON the old "Crosswind Landings" thread!
Just wish to talk about the airspeed to get according different wind speeds and gusts!

jmarc

  #2  
Old September 29th 05, 08:16 AM
Duncan McC
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In article , jmarc99
@sympatico.ca says...
After having read all the posts in the previous thread, no one said a word
about de right airspeed to keep along the final approach... whatever this is done
with a sideslip or crabbing.

I am wondering what should be the right airspeed (calculated or not, 1.3 Vs + wind speed)
to get in a crosswind landing.

What about a straight 90 degrees crosswind, or more?

I wouldn't turn back ON the old "Crosswind Landings" thread!
Just wish to talk about the airspeed to get according different wind speeds and gusts!


There, yer just said it - wind speeds and gusts (namely gusts).
Nothin' to do with crosswinds (same speed applies).

Admittedly, if you're going to take a slightly longer flare (to get
'crossed up' and lined up), one might consider adding an extra knot or
two to allow for that - as well as the extra drag while yer crossed up.

--
Duncan
  #3  
Old September 29th 05, 01:25 PM
GSA
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I was learnt to adjust the airspeed in the following way:

(normal landing speed 90 kmh)

- when you need to move your stick more than halfway to the left or
right to keep the plane horizontal, you are flying too slow...

- when you try to fly 90 and airspeed is varying between 70 and 110, fly
110, so airspeed will always be more than 90.
  #4  
Old September 29th 05, 02:10 PM
Bert Willing
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Well, I learned that when I need to move the stick out of center to keep the
glider horizontal, something is wrong...

--
Bert Willing

ASW20 "TW"


"GSA" a écrit dans le message de news:
...
- when you need to move your stick more than halfway to the left or right
to keep the plane horizontal, you are flying too slow...



  #5  
Old September 29th 05, 02:48 PM
Jmarc99
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"GSA" wrote in message
l...
I was learnt to adjust the airspeed in the following way:

(normal landing speed 90 kmh)

- when you need to move your stick more than halfway to the left or right
to keep the plane horizontal, you are flying too slow...

- when you try to fly 90 and airspeed is varying between 70 and 110, fly
110, so airspeed will always be more than 90.


I agree with all that, when the wind is straight on the runway!

But, I wander if this is true whatever the wind direction is 90 degrees,
or worst, let say 180 degrees. Is the rule 1,3 Vs + wind speed still right
to use,
when your final is downwind?

jmarc...


  #6  
Old September 29th 05, 03:38 PM
Nyal Williams
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Your aircraft flies through the air; that's aerodynamics.
Neither your wings nor your ASI can identify crosswind
or downwind; tha'ts geography. They connect only at
touchdown


At 14:06 29 September 2005, Jmarc99 wrote:

'GSA' wrote in message
. nl...
I was learnt to adjust the airspeed in the following
way:

(normal landing speed 90 kmh)

- when you need to move your stick more than halfway
to the left or right
to keep the plane horizontal, you are flying too slow...

- when you try to fly 90 and airspeed is varying between
70 and 110, fly
110, so airspeed will always be more than 90.


I agree with all that, when the wind is straight on
the runway!

But, I wander if this is true whatever the wind direction
is 90 degrees,
or worst, let say 180 degrees. Is the rule 1,3 Vs
+ wind speed still right
to use,
when your final is downwind?

jmarc...






  #7  
Old September 29th 05, 03:39 PM
Nyal Williams
external usenet poster
 
Posts: n/a
Default

Your aircraft flies through the air; that's aerodynamics.
Neither your wings nor your ASI can identify crosswind
or downwind; tha'ts geography. They connect only at
touchdown


At 14:06 29 September 2005, Jmarc99 wrote:

'GSA' wrote in message
. nl...
I was learnt to adjust the airspeed in the following
way:

(normal landing speed 90 kmh)

- when you need to move your stick more than halfway
to the left or right
to keep the plane horizontal, you are flying too slow...

- when you try to fly 90 and airspeed is varying between
70 and 110, fly
110, so airspeed will always be more than 90.


I agree with all that, when the wind is straight on
the runway!

But, I wander if this is true whatever the wind direction
is 90 degrees,
or worst, let say 180 degrees. Is the rule 1,3 Vs
+ wind speed still right
to use,
when your final is downwind?

jmarc...






  #8  
Old September 29th 05, 08:27 PM
GSA
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Default

Bert Willing wrote:
Well, I learned that when I need to move the stick out of center to keep the
glider horizontal, something is wrong...


With crosswind I land with 'crossed' controls, so the stick is out of
the center... but the plane isn't horizontal then, my fault
  #9  
Old September 29th 05, 08:46 PM
Andy
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Jmarc99 wrote:
After having read all the posts in the previous thread, no one said a word
about de right airspeed to keep along the final approach... whatever this is done
with a sideslip or crabbing.



Beware of flying indicated airspeed during a slipping approach. The
pitot/static system on some giders will give large indicated airspeed
errors when slipping. As an extreme example my ASW-19 read zero
airspeed in a full rudder slip, probably due to the nose pot pitot.
You need to know your glider and fly the appropriate attitude rather
than the ASI.

Andy

  #10  
Old September 30th 05, 08:12 AM
Bert Willing
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With crosswind, I crab and I touch down with crossed controls. Crossed
controls on final means higher stall speed, unreliable ASI readings and is a
nono.

--
Bert Willing

ASW20 "TW"


"GSA" a écrit dans le message de news:
...
Bert Willing wrote:
Well, I learned that when I need to move the stick out of center to keep
the glider horizontal, something is wrong...


With crosswind I land with 'crossed' controls, so the stick is out of the
center... but the plane isn't horizontal then, my fault



 




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