Backcountry Pilot • Had an interesting landing today.

Had an interesting landing today.

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Re: Had an interesting landing today.

Mr Scout, what's all the hype and hoopla man? :lol: please don't get all sideways on me and hide in a cave somewhere if I post my opinion [-o<
I have been biting my tongue on this one because it seems like every time I share my opinion, one of the Nevada crew they get their panties in a bunch and signs off for good :oops: But what they hey... I'm sorry if I gotta call foul when I see it...
mr scout wrote:I wonder if any of you guys ever do any of this crap more than once.

All the whining about power on and the engine quiting.


Whining? It's called conversation, and interaction. It's a lot more stimulating than having someone who doesn't know you from Moses bark at you because they think you are clueless... Interestingly enough all the internet 'know it alls' I have met have been dismal sticks at best, but some of the humble guys have been truly amazing 8)

mr scout wrote:I flew with a guy this week that spent two hours telling me how when the engine quits, your gonna be in the weeds, so on a hang it on the prop power on approach guess what I shut it off.........oh were gonna die!!!! guess what jr, push the nose down hard and ill be damn we made the runway.


I use power on approaches in all and every landing... undoubtedly the vast majority could have been made glider style. Unlike my Mr Scout though, I will fess up and say it's because I am just too damn lazy to fly a stabilized approach. This is no different than the 3pt / wheelie argument, lets face it absolutely every landing is going to end with the engine OFF This is not rocket science. Take a look at your stall speed with the power off, and then look at the stall speed with just a touch of power. It's very fashionable to claim you carry a ton of power on approach, but the truth is in most birds, that will put your tail down way before your mains. If the field is that short it is likely to be rough, and I myself do not want my t/w down first in the rocks. The stall speed difference with *just a touch of power* is going to be one or two mph different, most of the 'backcountry wonders' I've witnessed could make up for that difference by simply learning how to hit the intended touchdown point....
Mr Scout, you pax was clearly over doing it... but you just made his point for him. By chopping the throttle and making the field you proved that the "chop and drop" was not necessary =D> But guess what, go back and watch someone flying behind the curve into somewhere that it is necessary, and I bet you dollars to doughnuts fine sir, that not only will they not make the field if they chop the power, they won't make the field if they simply retard the power...The whole point of that technique is for the wing to quit flying when you chop.... :roll: If you are still flying when you chop, perhaps you could use a little dual? :shock: :lol: :lol: :lol:

mr scout wrote:High flat approach, where you gonna do those? you guys are just full of bad info for the rookie thinking you guys are real pilots.


I might ask where is the average joe going to take any airplane that couldn't be landed without power?

While learning to soar I noticed all glider pilots are snobs to powered pilots... now I understand... A bronze badge (read:rookie) the applicant will perform an accuracy landing to be no more than 500' total from intended touch down to stop. However most will accept no more than 400' max in a Schweitzer 2-33. I will have to dig a little, But as I recall on my commercial check ride I got +/- 100' for accuracy and 200' room to land. All that with no engine, and one dismal brake on a single wheel (not a bushwheel BTW...) I am not a good stick, but I got her done...
If more powered pilots learned energy management, to compliment the engine management there would be less Nevada guys signing on with aliases to defend CFIs that land in playgrounds :oops:

Mr Scout, I say again, I land with power all the time, and agree with your intention, just not your method of delivery :lol: I hope you don't get all busted up over this because I enjoy your posts and would love to look you up next time I'm in your neck of the woods to wring out the wings together...

oh and one last note:
mr scout wrote:Maybe those of you that ended up in the weeds for being stupid should have that in your signature so the new guys know.


Take care,
Rob, aka:been in the trees, weeds and wires....
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Re: Had an interesting landing today.

It occurred to me that I might add that in MY power on approaches, power reduction during power modulation is not synonymous with "chopping the power" as simulated by Mr. Scouts demonstration. Maintaining you glidepath via power could very well include any power setting from full to zero throttle. In fact during more technical landings my cub sounds more like a 2 stroke motocross bike on short final than your average airplane. However rest assured that in my case when the power is chopped for the duration, the flying is over...
Here is a classic example of this exercise, and it is clear that at any time in the game a power removal for any duration is going to spell game over, or in other words, an engine failure is going to bring him up short :lol: :


Rob, the weed eater
Last edited by Rob on Sat Apr 25, 2009 12:42 pm, edited 1 time in total.
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Re: Had an interesting landing today.

:shock: Hide in a cave, come on Rob you have been invited up here and you dont show, know one is hiding in caves, digging in mines maybe not hiding in caves. An Rob I dont think you single handedly caused anyone to leave but I have been wrong once or twice before 8)

Looks like it took my post to finally talk some sense about all the miss information given lately........Which should be obvious

Glad I could be of service to get some factual discussion started.

Whee when I talk about hanging on the prop is not a flat approach, I pull the nose of the Scout up to about 45mph indicated we are sinking like Jimmy Hoffa in a 55 gal barrel stabilizer is buffeting and its rudder work, let a wing drop and you may be toast. Here at 4000 ft elevation It will land and using about 250ft of runway and its an arrival with full power the last 20-30 ft if I was better it could be shorter but I don't want to hit the fence so I give myself some extra room.

Many people think they are hanging on the prop when in fact there just doing a slow power on approach. Which I demonstrated by simply pushing the nose down we could fly out of it and still make the field.

I almost always fly a power on approach, I feel I would rather make solid stabilized approaches and one horrible one if the engine failed rather than lots of crappy power off ones in case it does.

And I strongly feel the type of hang it on the prop stuff I am talking about should be practiced at altitude till you have it nailed and make sure your aircraft can even perform on. IT MAY NOT, DONT LEARN THAT CLOSE TO THE GROUND

Okie you will need to retrain your seat, the cool thing about the STOL system is you can slow down leave on a little power and recovery is instant. If you have a long runway go drag it into the air and hold it there just above the runway for a bit. You will see way more sky that your used too.
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Re: Had an interesting landing today.

mr scout wrote:Whee when I talk about hanging on the prop is not a flat approach, I pull the nose of the Scout up to about 45mph indicated we are sinking like Jimmy Hoffa in a 55 gal barrel stabilizer is buffeting and its rudder work, let a wing drop and you may be toast. Here at 4000 ft elevation It will land and using about 250ft of runway and its an arrival with full power the last 20-30 ft if I was better it could be shorter but I don't want to hit the fence so I give myself some extra room.


Thanks for correcting me Scout. Everyone I have ever discussed this with always meant a flat approach when they said "hangin it on the prop." Your approach sounds like one of the techniques Potts talks about in his book...but taken to the next level. That level of technique is far past my skill and I doubt my plane could do it at 5000 ft elevations I'm usually at. But toned down a bit with a little more speed will give you what I'm planning on trying to improve my approach. The published approach speed for my Luscombe is 70mph and that gives a nice smooth power off approach with lots of float :? I typically fly my approaches at 67mph with a little power...yeah, those 3mph make a difference when it comes to how much she'll float. I plan to decrease my speed by increasing my angle of attack and thus flying a steeper approach. I'll do this in steps and hopefully be able to slow my approaches to the 60mph range. I practiced 60mph approaches but they were done very flat and most of my speed was in the horizontal direction so the ground roll wasn't much shorter than a standard approach. I'm hoping to get my ground roll down under 500ft. My current best is 700ft but 900ft is what I expect to use on most of my landings. With Big Bar being only 1100ft long it makes me nervous to give it a try with only 300ft of extra runway.

Sorry about hijacking your thread Okie Bush Man.
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Re: Had an interesting landing today.

mr scout wrote:Whee when I talk about hanging on the prop


There's hanging on the prop, and then there's hanging on the prop. Practically, I think the way Mr. Scout describes a really slow power-on approach is not really hanging on the prop, but I often use it as a term for any kind of configuration where some of the weight of the aircraft is being born by thrust. A lot of power can enable you to mush the aircraft indefinitely. And then you have hanging on the prop, in the sense of an Extra 540 hovering with the nose pointed at the sky. Now I'm excited to go out and practice some of this stuff again...at altitude.

This forum, like many others, has lots of good information and lots of wrong information. There's no good way to evaluate who's got eleventy billion hours or real skills. We have guys who've crashed because of easily preventable mistakes, and we have guys who are heralded by thousands as mountain flying instructors, who are no longer with us. It's in the 2nd paragraph of the Newbie's Guide-- take anything you read here with a grain of salt. More experienced pilots, please do your best to correct those of us who are full of shit.
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Re: Had an interesting landing today.

Zane,

Where is your video of the Scouts departure last year out of JC. As I recall it was about 200lbs under gross.

And you have already been in the weeds, I guess I should have said trees........
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Re: Had an interesting landing today.

This can get into a good aerodynamics discussion, but I won't bore you. I'll share a quick lesson that we teach in the Navy about approaches using AOA gauges.

When you're flying that slow then you're on the "back side of the power curve." Simply put, to slow down and maintain the same amount of lift (eg, level flight or constant glideslope), you have to add power. Check out a "power required curve" that plots power required vs airspeed.

Practical application, when on a glideslope, use power to adjust your rate of descent and your nose attitude to adjust your airspeed. That explains why things got weird for Okie Bush Man when he was at about 1.1Vs and pulled off the power. All he accomplished was increasing his sink rate while slowing down. If he wanted to round out the flare he should have kept the power he had or even add a bit to get a deeper AOA.

Then, the aerodynamics changed when he got into ground effect. That's probably why he didn't bend his gear.

Danger! Now imagine that you are on the back side of the power curve (1.1Vs), dragging in to the sandbar at 30 feet ala Greg Miller, and you lose your engine. The only thing to do to keep from stalling is dump your nose. You may not have enough altitude.
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Re: Had an interesting landing today.

mr scout wrote::shock: ... come on Rob you have been invited up here and you don't show, know one is hiding in caves, digging in mines maybe not hiding in caves. An Rob I don't think you single handedly caused anyone to leave but I have been wrong once or twice before 8)...


guilty as charged :oops: but I'll give you fair warning next time I'm headed that way 8) The bad news is I'll be heading to Iowa this summer instead of Orvada, The good news is that, this means the next time I come through it will be for fun flying instead of work 8)
BTW... I'm sorry that last post revealed my assholiosis in full form :oops: it really wasn't intended to be a bash on Mr. scout post, but it sure looked like it before I was done.

Take care, Rob
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Re: Had an interesting landing today.

mr scout wrote:I wonder if any of you guys ever do any of this crap more than once.

All the whining about power on and the engine quiting.

I flew with a guy this week that spent two hours telling me how when the engine quits, your gonna be in the weeds, so on a hang it on the prop power on approach guess what I shut it off.........oh were gonna die!!!! guess what jr, push the nose down hard and ill be damn we made the runway.

High flat approach, where you gonna do those? you guys are just full of bad info for the rookie thinking you guys are real pilots.

Maybe those of you that ended up in the weeds for being stupid should have that in your signature so the new guys know.


I am a low hr pilot that practices short Field techniques regularly. If you really need to hang it on the prop you are after the numbers, and if the motor quits you push the nose forward to keep flying, not to make the runway (you are not going to make the runway).
An exception to this would be if you were practicing hanging on the prop and landing beyond the numbers. With that being said, if you are truly hanging on the prop and the motor quits you will make the runway but could very well be towing the plane to the hanger.
Glad to see you back posting again and stirring the stink. =D>
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Re: Had an interesting landing today.

My instructor defined "hanging on the prop" as the condition where you are operating the aircraft in the reverse part of the power curve. That is, to go slower, you need more power. Remember the the total drag curve is the sum of two components; induced drag from the wing, which gets higher the slower you go, and parasitic drag, which gets bigger the faster you go. The net result is a curve that starts high at low speed and goes down until approximately best glide speed is reached, and then goes up again.

Dragging it in, or hanging on the prop means you are well into the region where the power required goes up as you pitch the nose higher. On my little Savannah, I can add more and more power and at some point the airspeed indicator goes to zero, the gps says about 20mph, and the nose is pointed what seems like 45 degree high. (but probably not really) I have only practiced this at altitude because I would not want to suffer the consequences of a mistake or an engine failure.

Most folks are not all that close to a real reverse curve condition on landing. I agree that most of the contest winners are. Even on a more or less normal approach, cutting power definitely reduces lift, and gets you on the ground quicker.

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Re: Had an interesting landing today.

mr scout wrote:Where is your video of the Scouts departure last year out of JC.


http://vimeo.com/groups/backcountrypilot/videos/1273463
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Re: Had an interesting landing today.

1SeventyZ wrote:
mr scout wrote:Where is your video of the Scouts departure last year out of JC.


http://vimeo.com/groups/backcountrypilot/videos/1273463


OOOhh!, I get it now Mr Scout, that explains where you are coming from. :idea: :roll: :?
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Re: Had an interesting landing today.

When operating in the area of reverse command, and really hanging on the prop the approach looks much like that departure. I have a picture my wife took of one of these approaches and it looks like a take off.

I think you get the point of really hanging on the prop or just a slow power on approach that really isn't in the area of reverse command, but many think they are.

Any way go out and practise at altitude, once you get it mastered you will land way shorter and you will find yourself understanding a whole bunch more about what your bird is capable of when it has to be to save your ass.
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Re: Had an interesting landing today.

Clicked Twice
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Re: Had an interesting landing today.

Small Tail Caddy wrote:
mr scout wrote:I wonder if any of you guys ever do any of this crap more than once.

All the whining about power on and the engine quiting.

I flew with a guy this week that spent two hours telling me how when the engine quits, your gonna be in the weeds, so on a hang it on the prop power on approach guess what I shut it off.........oh were gonna die!!!! guess what jr, push the nose down hard and ill be damn we made the runway.

High flat approach, where you gonna do those? you guys are just full of bad info for the rookie thinking you guys are real pilots.

Maybe those of you that ended up in the weeds for being stupid should have that in your signature so the new guys know.


I am a low hr pilot that practices short Field techniques regularly. If you really need to hang it on the prop you are after the numbers, and if the motor quits you push the nose forward to keep flying, not to make the runway (you are not going to make the runway).
An exception to this would be if you were practicing hanging on the prop and landing beyond the numbers. With that being said, if you are truly hanging on the prop and the motor quits you will make the runway but could very well be towing the plane to the hanger.
Glad to see you back posting again and stirring the stink. =D>


Maybe I haven't been clear on a couple points, go out fly a normal approach, or maybe even one you know is to high, like you had to clear a bunch of trees. Then you pull up the nose and come down. Like I said try at altitude until your sure you and your aircraft are capable before you do it near the ground. Its not a maneuver to take lightly its dangerous.
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Re: Had an interesting landing today.

I just pulled out my "...bible" to see what Sparky had to say on this topic. He recommended carrying a little power on final, 1300 to 1600 rpm. However, his reasons were to provide better carb heat, and more reliable power up if a go-around is needed. It very explicitly states to slip if you're too high instead of reducing power to idle. Hmmm...I think I need to re-read a lot of that book. :roll: :oops:

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Re: Had an interesting landing today.

Actually, I think the area of reverse command covers a lot of ground. Power on approaches are a good way to get used to manipulating the throttle to control your decent rate, which becomes critical if you really want to use it to extreme, as Mr. Scout describes. The deck angle, however is controlled by a lot more factors than just airspeed alone. As you may have noticed in that you tube video of Jerry Burr he is very flat, but he is also going very very slow... That airplane a super light J3 / PA 11 with more wing tricks than most... I fly power on, to the ground in my cub and it tends to be a lot like Mr scout describes, but when I fly power on to the ground in my work plane it is very flat, even when it's slow for the airplane.
Here is a bit heavier plane, and the deck angle is alot more of what Mr. Scout is describing, in fact probably a lot more than Mr. scout is describing. This video was from Wayne still owned this plane, and I believe it was when it had the small motor in it, It later went to a 180hp, and 35" Bwheels... Wayne recently did some work on my cubs fuse, and I can't wait to get it back in the air 8)
Oh, and not to beat a dead horse or anything, but I just thought I'd point out that every LZ scene in this clip could be landed power off in a stock cub :oops:

Take care, Rob
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Re: Had an interesting landing today.

Just to help visualize the aproach angles I made this rough plot of a 3.5deg and 4.5 deg approach.

Image

You can see that to land at the same point you have to start your 4.5deg approach about a half a mile after you would have to start a 3.5deg approach. So if your engine quit and you still had some altitude you could push the nose over till you were at your 3.5deg approach speed and you'd easily make the runway.
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Re: Had an interesting landing today.

Whee, there is one small (okay big) problem with your logic........Without the fan working, you'll NEVER get to a 3.5 or a 4.5 degree glideslope with any of these high wing, fixed gear, lift strut wearing pigs....You need power, and a fair amount of it, to make that happen.

Based on my POH, Best Glide in my 172N is 65 kias, ZERO flaps, prop windmilling. Performance charts basically gives a 9:1 best glide ratio, or 6.3 degree glideslope. Throw in full flaps and 10 degrees is not only possible it is SOP. I'd guess that some headwind, low airspeed & High AOA with power and 20 degrees approach angle is achievable, although I have no way to document that. The 10 degree approach angle is higly evident when flying a normal, power off approach around the patch at a VASI equipped airport.....A typical VASI goes from white as the pure driven snow at 500' agl turning base to a 1/2 mile final to dead red at approx 50 - 60' agl on glideslope to the numbers.

3.5 degree glideslopes are closer to what airliners are capable of when cleaned up.....

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Re: Had an interesting landing today.

I totally agree with what you are saying Flyengr. But the idea remains the same...if flying a steep approach and your engine quits pitching for your standard approach speed, which will have a shallower approach angle , will get you to the runway.
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