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MyNameIsNobody Grand Master

MyNameIsNobody

Posted
Posted

I would appreciate some input/experiences from others that have had similar occur.  On take-off this weekend had a gusty cross-wind.  Take-off run was uneventful.  I rotated at 70mph with take-off flaps and had positive climb and wham stall horn/audible stall in ear piece and plane dropped out momentarily.  Gear and flaps still down.  Recovered lift and climbed/retracted gear and flaps after clear of departure end trees...

Windsock was all over between SW/W/Dropping and then even NW for a moment...I think I caught a NW momentary gust...

Anyone else experience this?  Suggestions?  Could have taken off from Grass field E/W runway...Maybe a better choice with those winds?

Marauder Grand Master

Marauder

Posted
Posted
I would appreciate some input/experiences from others that have had similar occur.  On take-off this weekend had a gusty cross-wind.  Take-off run was uneventful.  I rotated at 70mph with take-off flaps and had positive climb and wham stall horn/audible stall in ear piece and plane dropped out momentarily.  Gear and flaps still down.  Recovered lift and climbed/retracted gear and flaps after clear of departure end trees...

Windsock was all over between SW/W/Dropping and then even NW for a moment...I think I caught a NW momentary gust...

Anyone else experience this?  Suggestions?  Could have taken off from Grass field E/W runway...Maybe a better choice with those winds?

Yeah, I have experienced this. On windy, especially crosswind days, I rotate at a bit higher speed.

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Bob_Belville Grand Master

Bob_Belville

Posted
Posted

I would appreciate some input/experiences from others that have had similar occur.  On take-off this weekend had a gusty cross-wind.  Take-off run was uneventful.  I rotated at 70mph with take-off flaps and had positive climb and wham stall horn/audible stall in ear piece and plane dropped out momentarily.  Gear and flaps still down.  Recovered lift and climbed/retracted gear and flaps after clear of departure end trees...

Windsock was all over between SW/W/Dropping and then even NW for a moment...I think I caught a NW momentary gust...

Anyone else experience this?  Suggestions?  Could have taken off from Grass field E/W runway...Maybe a better choice with those winds?

Sounds like you lost airspeed due to the shifting winds. If you're not being blown off the runway I agree with Marauder that getting speed up while on the ground will give you a greater margin if the wind shifts on you.

  • Like 2
Andy95W Grand Master

Andy95W

Posted
Posted

Most instructors teach to add 1/2 the gust factor for approach speed.  The same rationale could be applied to rotation speed for takeoff.

But then you had to go and mention flaps on takeoff.  Sigh.  :)

  • Like 1
Hank Grand Master

Hank

Posted
Posted

Since you only gave directions of the wind and the other runway, I would also lean to wind shift. When it's twitchy, I'll rotate at 75 mph instead of my normal 70, but still get stall chirps while climbing out through 80 mph.

also, just like landing in strong gusty winds recommends flap reduction, so does taking off in similar conditions.

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jetdriven Grand Master

jetdriven

Posted
Posted (edited)

I would argue that shifty or gusty winds actually increase the need for takeoff flaps. The airplane has more lift at slow speed and stalls at a lower speed.  

 

You our did fine Scott, recovered speed and carried on. These planes do not do well below ~70 mph.  

Edited by jetdriven
  • Like 1
Guest

Guest

Posted
Posted

Sounds like wind shear.happened to all of us. As mentioned before, just add 5 or 10mph to your take off speed.

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MyNameIsNobody Grand Master

MyNameIsNobody

Posted
  • Author
Posted

O.K, concensus is to add ground speed before rotation.  Could have done this.  Appreciate this.  Pretty good drop...I was tracking runway so....hope it would have been O.K., but I was along for the ride for a couple seconds.  As Ferrell said in Anchorman...Wow, THAT escallated quickly.  Thanks for input guys!

 

I was expecting some shananigans with the major wind shifts on sock I was seeing.  75MPH it is if/when I encounter that again.

  • Like 1
HRM Grand Master

HRM

Posted
Posted

Yep, wind shear.

A few years ago I flew out towards Louisiana on a gorgeously sunny spring day towards a small airport that had just resurfaced their runway. Note the singular. Anyway, it was quite gusty and I had a great time doing landings there.

At one point I noticed a peculiar chirping sound and since I was fairly new to my Mooney, I did not know what it was. Then I realized that Mother Nature was flicking the tab on the stall switch with those gusty winds. It was just too cool for words.

Become one with the plane grasshopper. 

PMcClure Mentor

PMcClure

Posted
Posted (edited)

My technique for gusty crosswind take offs is to hold a little forward pressure on the yoke to keep the nose wheel firmly planed on the ground until I an ready to take off. I also increase the rotation speed. This helps maintain control on the ground and also makes sure the plane does not take off momentarily in a wind shift or gust. I don't claim to be an expert, just passing along what I do. 

Edited by PMcClure
  • Like 2
bradp Grand Master

bradp

Posted
Posted
My technique for gusty crosswind take offs is to hold a little forward pressure on the yoke to keep the nose wheel firmly planed on the ground until I an ready to take off. I also increase the rotation speed. This helps maintain control on the ground and also makes sure the plane does not take off momentarily in a wind shift or gust. I don't claim to be an expert, just passing along what I do. 

I've found in conditions where wind is gusty and from varying and unpredictable direction, I've gotten into an uncomfortable feeling of cartwheeling if a direct crosswind becomes a quartering tailwind down the runway. Just be ready to reverse your nose down pressure at a moments nose-tice.

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PMcClure Mentor

PMcClure

Posted
Posted

 

I've found in conditions where wind is gusty and from varying and unpredictable direction, I've gotten into an uncomfortable feeling of cartwheeling if a direct crosswind becomes a quartering tailwind down the runway. Just be ready to reverse your nose down pressure at a moments nose-tice.

 

 

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Agree - and you can't get too zealous in increasing your rotation speed or you can cartwheel (or wheelbarrow). 

  • Like 1
Jerry 5TJ Grand Master

Jerry 5TJ

Posted
Posted

..... These planes do not do well below ~70 mph.  

Depends:

  • When light my "C" model will fly along happily in landing configuration at 70 mph all day (literally, at 5 GPH or so)
  • The "R" wants about 70 knots in landing configuration to be comfortable.
In dealing with gusty winds I find more speed, less than full (or no) flap plus wider and longer runways are helpful.

  • Like 1

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