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#1
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2g to answer your question, I can recover from a 1/2 turn spin within 150ft but my response has to be instinctive and instantaneous, which it has gotten thru lots of practice.
You never answered my querry, when is the last time you practiced spins, spin entry, and recovery? Do you intimately know the subtleties of your birds behavior when super slow? Whens the last time you've taken 10 pattern tows and seen how steep you can approach a landing spot and stop short? Do you know how short you can stop? Do you practice very very minimum energy landings to be able to fly the ragged edges of control when you really need to? These are things every xc pilot should do yearly and definitely when in a new bird. |
#2
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To paraphrase advice from Wolfgang Langewiesche in Stick and Rudder: if *anything* surprising ever happens in a turn immediately unload (i.e aerodynamically) the wing.
IMO it should be ingrained in every pilot's mind that the instant he is surprised during a turn the he should move the stick forward - only after that should he analyse the situation. |
#3
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Well said jpg. I forgot that wolfgang quote. Thats more of a lifesaver than any "fly coordinated" mantra. Thanks
Dan |
#4
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On Thursday, September 19, 2019 at 6:25:24 AM UTC-5, wrote:
To paraphrase advice from Wolfgang Langewiesche in Stick and Rudder: if *anything* surprising ever happens in a turn immediately unload (i.e aerodynamically) the wing. IMO it should be ingrained in every pilot's mind that the instant he is surprised during a turn the he should move the stick forward - only after that should he analyse the situation. I try to teach myself to respond to a wing drop with stick forward and slightly into the wing drop (to reduce the AOA) and opposite (usually top) rudder. It's a good reflex to build. Andy Blackburn 9B |
#5
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Many gliders are not approved for deliberate spinning. Do you guys recommend spinning them anyway? My approach to spin avoidance is to monitor the airspeed, and to teach that if the nose ever goes down uncommanded to push the stick forwards.
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#6
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On 9/20/2019 1:21 AM, waremark wrote:
Many gliders are not approved for deliberate spinning. Do you guys recommend spinning them anyway? My approach to spin avoidance is to monitor the airspeed, and to teach that if the nose ever goes down uncommanded to push the stick forwards. Practice, practce, practice. Leads to (immediate) reaction(s), reaction(s), reaction(s). Good and useful stuff...at many levels IMO. Most of my flight time is in 3 ship types: 1-26; (V-tailed) HP-14; Zuni. The latter two both registered in the (USA's) Experimental category. The only one I spun was the 1-26.Seventeen turns max one direction; 6 turns max the other (after which it always self recovered in [as I recall] a slipping, spiraling, dive...which I never let continue very long). Difficult (in the asleep at the switch sense of things) to induce any sort of departure from controlled flight at my (light) weight, much less a spin...but a great ship in which to practice inadvertent departures...and fun to spin, too. Difficult to imagine a safer/better glider in which to "practice spinning." SN105, and - as always, when dealing with spinning - YMMV! I intentionally never spun the HP because I was unconvinced it had sufficient tail-feather power to break a fully-developed spin, and, no one was paying me to be a test pilot. Nor did my uncommanded-departure-practice suggest 'instant spinning' was in my immediate future. Like the 1-26 it, too, required serious/continuing inattention to induce even a hint of wing drop, and 'instantaneous' forward stick and opposite rudder quickly set things right within 90-degree of heading change (the most I ever let it go). The Zuni (as shown in the ship logs) *was* spun by a(n unpaid, I think, and intentional) test pilot, but never by me beyond the departure-related wing drop/initial rotation because of personal-skill-related concerns associated with overspeeding the diving recovery...buttressed by my personal rationale/concerns about the 'guaranteed repeatability' of fully-developed spin behavior in any bird. That said, it too was docility personified in its 'asleep at the switch' departure-related behaviors (which varied with flap settings). How do I know? Practice, practice, practice... And so...just to be explicit, *I* certainly don't recommend anyone play Joe Test Pilot in the spinning sense - *especially* if the ship's POH explicitly prohibits spins. There's a continuum of ship-behavior (and time) between an uncommanded departure from controlled flight, and a fully-developed spin, and 'practicing sensibly' along that continuum is what I seriously recommend. Readers are free to interpret such free advice as they wish...or misinterpret it, too. Memory, and muscle memory, are your friends when it comes to the unavoidable, ever-thin(ning) margin patterns and the (should be, dry chuckle) dreaded uncommanded departure from controlled flight...which continues to be a common source of pilot fatalities...a good 80+ years after general pilot knollich of spins, their causes, recommended-recovery-methodology therefrom (or not, sigh...) were 'essentially understood.' Practice - and common sense - can be your friends. :-) Bob W. --- This email has been checked for viruses by AVG. https://www.avg.com |
#7
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On Friday, September 20, 2019 at 2:21:19 AM UTC-5, waremark wrote:
Many gliders are not approved for deliberate spinning. Do you guys recommend spinning them anyway? My approach to spin avoidance is to monitor the airspeed, and to teach that if the nose ever goes down uncommanded to push the stick forwards. Is it about their age or design? I'm curious if there are any modern gliders (not motorgliders) not approved for spinning by design - which ones? Thanks. |
#8
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On Friday, September 20, 2019 at 4:31:25 AM UTC+1, Andy Blackburn wrote:
On Thursday, September 19, 2019 at 6:25:24 AM UTC-5, wrote: To paraphrase advice from Wolfgang Langewiesche in Stick and Rudder: if *anything* surprising ever happens in a turn immediately unload (i.e aerodynamically) the wing. IMO it should be ingrained in every pilot's mind that the instant he is surprised during a turn the he should move the stick forward - only after that should he analyse the situation. I try to teach myself to respond to a wing drop with stick forward and slightly into the wing drop (to reduce the AOA) and opposite (usually top) rudder. It's a good reflex to build. Andy Blackburn 9B I completely agree with that Andy. And you don't always have to be flying to do that, the reflex can be reinforced sitting at home repeatedly rehearsing it in your mind. |
#9
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On Friday, September 20, 2019 at 2:18:55 AM UTC-7, wrote:
On Friday, September 20, 2019 at 4:31:25 AM UTC+1, Andy Blackburn wrote: On Thursday, September 19, 2019 at 6:25:24 AM UTC-5, wrote: To paraphrase advice from Wolfgang Langewiesche in Stick and Rudder: if *anything* surprising ever happens in a turn immediately unload (i.e aerodynamically) the wing. IMO it should be ingrained in every pilot's mind that the instant he is surprised during a turn the he should move the stick forward - only after that should he analyse the situation. I try to teach myself to respond to a wing drop with stick forward and slightly into the wing drop (to reduce the AOA) and opposite (usually top) rudder. It's a good reflex to build. Andy Blackburn 9B I completely agree with that Andy. And you don't always have to be flying to do that, the reflex can be reinforced sitting at home repeatedly rehearsing it in your mind. You can also fly Condor which is a GREAT tool, but nothing beats spins in the real aircraft. For the first ten years of my soaring career I made spin training an annual occurrence, in part because the instructor is the best pilot I have ever flown with. I stopped a nimbus 4 that departed within ¼ turn above a ridge, because of that training. Twenty-five years later I still make an excuse to fly with this semi-retired instructor on occasion, more aerobatics. And I still learn something new each time we fly. Slow flight is also a great was to get to know an aircraft. |
#10
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Continuing the thread drift:Â* One day, many years ago, my partner in an
LS-6a asked me if I'd ever stalled it in landing configuration. He said it would depart in a lively manner.Â* So, one day at the end of a flight, and with altitude to spare, I practiced traffic pattern stalls in the landing configuration.Â* ...And it was lively!Â* After that, I paid a lot more attention to AoA and yaw string in the pattern. On 9/20/2019 9:09 AM, Jonathan St. Cloud wrote: On Friday, September 20, 2019 at 2:18:55 AM UTC-7, wrote: On Friday, September 20, 2019 at 4:31:25 AM UTC+1, Andy Blackburn wrote: On Thursday, September 19, 2019 at 6:25:24 AM UTC-5, wrote: To paraphrase advice from Wolfgang Langewiesche in Stick and Rudder: if *anything* surprising ever happens in a turn immediately unload (i.e aerodynamically) the wing. IMO it should be ingrained in every pilot's mind that the instant he is surprised during a turn the he should move the stick forward - only after that should he analyse the situation. I try to teach myself to respond to a wing drop with stick forward and slightly into the wing drop (to reduce the AOA) and opposite (usually top) rudder. It's a good reflex to build. Andy Blackburn 9B I completely agree with that Andy. And you don't always have to be flying to do that, the reflex can be reinforced sitting at home repeatedly rehearsing it in your mind. You can also fly Condor which is a GREAT tool, but nothing beats spins in the real aircraft. For the first ten years of my soaring career I made spin training an annual occurrence, in part because the instructor is the best pilot I have ever flown with. I stopped a nimbus 4 that departed within ¼ turn above a ridge, because of that training. Twenty-five years later I still make an excuse to fly with this semi-retired instructor on occasion, more aerobatics. And I still learn something new each time we fly. Slow flight is also a great was to get to know an aircraft. -- Dan, 5J |
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