Backcountry Pilot • Pulsing or smooth power application crossing the threshold?

Pulsing or smooth power application crossing the threshold?

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Re: Pulsing or smooth power application crossing the thresho

GumpAir wrote:Isn't mastering these "complicated manoeuvers" the point of all this backcountry flying stuff? :D

Gump



Perhaps I should clarify, as I see it the complication is not in the manoeuvre itself but in the added workload generated by the changing configuration and local prevailing conditions acting on the aircraft that the trainee must compensate for. However I fully agree with your statement on backcountry flying. They are only complicated until you get the hang of it.
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Re: Pulsing or smooth power application crossing the thresho

One of the guys I know gets it done, into some of the shortest places you can imagine:

https://www.youtube.com/watch?v=nez9FDrHJWY

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Re: Pulsing or smooth power application crossing the thresho

Zzz wrote:One of the guys I know gets it done, into some of the shortest places you can imagine:



Zzz,

Could you post the URL? Can not seem to see video. I tried coping into YouTube app but, nothing seems to work. iPAD w/ Chome.
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Re: Pulsing or smooth power application crossing the thresho

Zzz wrote:One of the guys I know gets it done, into some of the shortest places you can imagine:




Well of course...he is a Maule man, would you expect any less ???
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Re: Pulsing or smooth power application crossing the thresho

8GCBC wrote:
Zzz,

Could you post the URL? Can not seem to see video. I tried coping into YouTube app but, nothing seems to work. iPAD w/ Chome.


Hmm. Weird. It loads but doesn't react to a tap to play it. I diddled it with some double tapping finger magic and it eventually played within the page, but definitely something wrong there. I think it's a Chrome bug.
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Re: Pulsing or smooth power application crossing the thresho

Zzz wrote:
8GCBC wrote:
Zzz,

Could you post the URL? Can not seem to see video. I tried coping into YouTube app but, nothing seems to work. iPAD w/ Chome.


Hmm. Weird. It loads but doesn't react to a tap to play it. I diddled it with some double tapping finger magic and it eventually played within the page, but definitely something wrong there. I think it's a Chrome bug.

I'm using Safari and the same thing happens. Been doing it for a couple weeks now. ios 8 problem??? I've got it down to about 15 1/2 taps before they'll start to play!

CW
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Re: Pulsing or smooth power application crossing the thresho

clippwagon wrote:
Zzz wrote:
8GCBC wrote:
Zzz,

Could you post the URL? Can not seem to see video. I tried coping into YouTube app but, nothing seems to work. iPAD w/ Chome.


Hmm. Weird. It loads but doesn't react to a tap to play it. I diddled it with some double tapping finger magic and it eventually played within the page, but definitely something wrong there. I think it's a Chrome bug.

I'm using Safari and the same thing happens. Been doing it for a couple weeks now. ios 8 problem??? I've got it down to about 15 1/2 taps before they'll start to play!

CW


Interestingly, a "pulsing" technique seems to be required to get it to play. :D
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Re: Pulsing or smooth power application crossing the thresho

Tap once in the lower right hand corner of the video frame on the iPad. Not sure why it works, but it does. I haven't "upgraded" to iOS 8 yet, still waiting for some work issues to be sorted out with it still.
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Re: Pulsing or smooth power application crossing the thresho

CapnMike wrote:Tap once in the lower right hand corner of the video frame on the iPad. Not sure why it works, but it does. I haven't "upgraded" to iOS 8 yet, still waiting for some work issues to be sorted out with it still.


It worked! Thanks!
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Re: Pulsing or smooth power application crossing the thresho

There is a lot more to it than just pulsing the throttle. Basically, the objective is to fly the plane in stall in ground effect. So in addition to throttle the pitch and rudder become integrated in the movement of controls. To a lesser extent the ailerons due to loss of authority.

All of the movements should be minimized, but whatever it takes you are elected. The key is lots of practice. First in slow flight at altitude. The falling leaf drill is important to make reflexive before practicing close to the ground. I try for more smaller adjustments than a few larger inputs.

Then get down in ground effect on a calm day in straight flight. Then cross winds and turns in corridinated flight as close to the ground without touching as possible. You will touch plenty but everyone gets better. Drill, drill, drill. It is a developed psycho-motor skill so you have to engrain the reflexes.

I use pivot fields sometimes and fly the circles. First the outer and then progressively smaller. Be careful! Then try it up hill. Once you are on the limit weight can make a material difference so be prepared when you show a friend how good you are. Mike
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Re: Pulsing or smooth power application crossing the thresho

Well said Mike, everything but the ailerons. In low ground effect, coordination of aileron and rudder are dangerous. We make only cross controlled rudder turns in low ground effect. Coordinated turns on final mess up more landings than any other technique. We old guys call it the wing wag.
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Re: Pulsing or smooth power application crossing the thresho

Yesterday I was flying 3 90 watt solar panels to a customer, two on one lift strut and 1 on the other. They were about 40" long by 24" wide and weight about 15 lbs ea. My flight path took me right over one of my mountain landing sites, and I thought what the hell, let's shoot a landing! This was not the first time doing off airports sites with solar panels as an external load BTW.

Either I just got it too slow (this site demands a max slowness approach over a large bush) OR there was a little aero difference while carrying the external load, or a mixture of both, whatever, but damn, it "broke" (quit flying) and I was very thankful for the extremely rapid throttle response of the Zippered Rotax (lighter weight pistons, a noticeable different throttle response, instant almost). I thought of this thread...... and laughed, like I was going to worry about exactly HOW the throttle was advanced? ALL of it, ASAP worked in this case. I still smacked it down HARD (I have the Super Cub style Roberts Gear conversion, and it payed for itself on this "landing", but the plane was still flyable, though the extended rollout due to all that throttle got me into what I thought was unlandable terrain but turned out not so bad (the 29" Airstreaks also paid for themselves again) and it turned out I still had a flyable airplane and did not have to hike off the mountain. Whatever gets the job done, just like a three point or not on landing, hard to believe it's even up as a thread, whatever doesn't bend the airplane and saves me a walk works for me. I have to admit though, smooth apps sound better, as in not so desperate!
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