ORIGINAL: sskianpour
This stuff's too technical for me. All I know is on my large 45 lb MB339 with a 600 foot runway at 5500 feet altitude, if I don't use crow, she goes off the runway at landing because she refuses to slow down, and goes into ground effect no matter how much flap is dialed in...with crow, she lands in 300 feet. I think the ''dragginess'' mentioned in this thread is what I like about crow, it makes planes that glide forever much more predictable. Same thing applies to my boomerang XL.
And my Kingcat NEVER bounces with crow. Just nice glide path to runway, flare and settle. Will be trying crow on my ultra bandit maiden this weekend. Will get back to you all on how that works out.
Cheers all,
Shaz
Technically, you have lesser air density causing lesser air mass flow on your wings and propulsions. Air density is a factor of lift and drag meaning, your plane require more airspeed and power. Engines up there has also lesser efficiency. I guess you have the same effect for same setting except without crow if you raise AoA by increasing elevator trim on landing and of course slight increase in power to compensate.