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  #11  
Old 09-15-2011, 01:52 PM
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gmcjetpilot gmcjetpilot is offline
 
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Quote:
Originally Posted by cmarbach View Post
It seems to me that if I hold my RV-7 (180 HP const speed prop) just off the runway eventually I have to increase the pitch enough that I think the tailwheel hits first and I get a little "hop" before it settles on the runway. No big bounce, but when I first touch I'm not staying on the ground either. Any hints to be better?

Your stall angle in ground effect is greater than your 3 point angle on all the ground. Just accept it or change your hold it off technique a little.

The solution is fly it on more and DON'T hold it off, aka "Wheel Landing". Some tail draggers that was the ONLY recommend way to land.

Yes you should land near stall, but with such a slick and low stall aircraft like the RV it's hard to three point it with short main gears, unless you fly it on a little. Have you done any two pointers? Have you flown it on with the tail up? Try it for a touch and go. Clearly this is a faster landing, and a better techqnique for windy conditions.

Some where beteen a hold it off tail wheel plop and two point is the three point in the RV. Some times a dab of power gets it. It's hard to do it consistantly. In the RV-4 with passenger and bags you tend to carry power and keep the tail up to avoid the tail wheel plop landing.

With the higher speed wheel landing (not a lot higher), if you bounce you might go flying again... avoid PIO (pilot induced oscillation).. either let it settle for a small hop, add power to stabilize and try again (runway permitting), or add power and go around. Again if the bounce is big add power and go around. Flying it on is fun.

With your technique you will almost always hit the tail wheel first. Also your technique is not a good idea in gusts, cross winds, you need a little airspeed for control authority, fwd slip for cross wind, a little power even .... Not every landing needs to be short or near stall. On the other hand landing too fast is recipe for something to bad happen and it to get out of control fast.
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  #12  
Old 09-15-2011, 07:29 PM
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L.Adamson L.Adamson is offline
 
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Quote:
Originally Posted by gmcjetpilot View Post
With the higher speed wheel landing (not a lot higher), if you bounce you might go flying again... avoid PIO (pilot induced oscillation).. either let it settle for a small hop, add power to stabilize and try again (runway permitting), or add power and go around. Again if the bounce is big add power and go around. Flying it on is fun.
That's what I did. Small bounce, followed by a slightly more bounce. I figured that would be the end of it. But then it was followed by a bigger bounce, in a nose low attitude, at a very slow speed. This bounce seemed to be from the landing gear.

Oh...............this was a nose wheeler, but was converted to a non-nose wheel in a few seconds. Shorter C/S prop..............too!

Other than that, I'm reading this "how to land" thread with interest. If I re-build, it will become a tail dragger. And that's because.............I hate doing things twice.

Note: I'd always power out of a big bounce, and have done it once. This was just a small bounce, probably from touching down too quick.

L.Adamson --- RV6A
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  #13  
Old 09-15-2011, 08:23 PM
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SkywayCaptain SkywayCaptain is offline
 
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The "RV Hop" is due to the tailwheel hitting first and then lowering the nose before the mains hit. The mains bounce back into the air below flying speed. Pulling back on the stick right after touchdown sometimes makes this worse. I like to land with the tailwheel about and inch or two high and allow the pitch attitude to lower just slightly after touchdown. This is the same as a "wheel landing" but with a lower speed (higher attitude). This makes for a greaser if done right and doesn't increase your landing distance to speak of, but requires a little more work than simply "letting it land" in the 3 point attitude. You may (will) have to push forward just a bit on touchdown if the runway is smooth esp. if you have a passenger (more aft CG). If you do bounce, it's too late... don't push forward on the stick, add power, better luck next time I used a similar technique when I flew Beech 18's. Some 18's would stall before you could get to the 3 point attitude esp. when empty (forward CG). Attempting a full 3 point landing in those conditions made for moderate excitement

Let me know when you guys figure out how to get perfect landings 100% of the time. I would like to know how to do this
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  #14  
Old 09-15-2011, 10:08 PM
yakdriver yakdriver is offline
 
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I've been coming over the fence at 60-65mph solo 65-70 with pax and get really consistent smooth three pointers. Used to use 70-75 solo and could rarely get a good landing. 65 is 1.3 vso in my airplane. Don
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  #15  
Old 09-16-2011, 03:11 AM
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mike newall mike newall is offline
 
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If you have a c/s prop - particularly the MT prop - consider leaving it a little way out on approach.

You do not have to have the prop fully fine to ensure adequate go round performance - just balance the performance needed.

Think about this - if you have a fixed pitch prop, you will land in full coarse......

The fine stop on most c/s props, especially 3 blade props give a huge amount of dynamic braking when the throttle is closed - usually too much for what is required.

So......

Either leave it set at - say 2300 on approach or leave a trickle of power to touchdown and aim for the mystical tailwheel 6"off the ground touchdown
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  #16  
Old 09-17-2011, 08:54 PM
patrokus patrokus is offline
 
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if you are landing on pavement you mighht try letting 5 lbs of air out of your tires. I keep 25lbs of air in my tires and I feel it helps a lot.
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