MyNameIsNobody Posted September 28, 2015 Report Posted September 28, 2015 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? Quote
Marauder Posted September 28, 2015 Report Posted September 28, 2015 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. Sent from my iPad using Tapatalk 1 Quote
Bob_Belville Posted September 28, 2015 Report Posted September 28, 2015 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. 2 Quote
Andy95W Posted September 28, 2015 Report Posted September 28, 2015 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. 1 Quote
Hank Posted September 29, 2015 Report Posted September 29, 2015 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. 1 Quote
jetdriven Posted September 29, 2015 Report Posted September 29, 2015 (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 September 29, 2015 by jetdriven 1 Quote
Shadrach Posted September 29, 2015 Report Posted September 29, 2015 It's happened to all of us. rotate 5-10 mph faster than normal. 1 Quote
Guest Posted September 29, 2015 Report Posted September 29, 2015 Sounds like wind shear.happened to all of us. As mentioned before, just add 5 or 10mph to your take off speed. Sent from my iPhone using Tapatalk Quote
MyNameIsNobody Posted September 29, 2015 Author Report Posted September 29, 2015 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. 1 Quote
Shadrach Posted September 29, 2015 Report Posted September 29, 2015 FWIW, you can also delay flap extension until just prior to rotation. The nice thing about hydraulic flaps is that the first notch can be deployed in about a second! 1 Quote
N201MKTurbo Posted September 29, 2015 Report Posted September 29, 2015 I usually rotate at normal speed but then immediately level off and accelerate in ground effects. Quote
HRM Posted September 29, 2015 Report Posted September 29, 2015 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. Quote
PMcClure Posted September 29, 2015 Report Posted September 29, 2015 (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 September 29, 2015 by PMcClure 2 Quote
bradp Posted October 1, 2015 Report Posted October 1, 2015 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. Sent from my iPhone using Tapatalk 2 Quote
PMcClure Posted October 1, 2015 Report Posted October 1, 2015 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. Sent from my iPhone using Tapatalk Agree - and you can't get too zealous in increasing your rotation speed or you can cartwheel (or wheelbarrow). 1 Quote
Jerry 5TJ Posted October 1, 2015 Report Posted October 1, 2015 ..... 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. 1 Quote
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