Polar with spoilers extended?

Marc Ramsey wrote:
I've
found that the Duo Discus does not take kindly to excessive speed on
approach. There is no elegant way to bleed off the excess energy, you
end up either floating down the runway, or forcing it down hot and
jamming on the brakes. It is best to maintain a proper approach speed
with full dive brakes and slip or S-turn as needed. I've heard that the
Libelle behaves in a similar fashion...

I've not tried that in my Libelle on finals (a full brake slip has
always fixed that situation very nicely to date - like hitting DOWN in a
lift) but I have tried it higher, when I wanted to get down quickly to
circuit height. Popping the brakes at 70+ kts with the wheel down gave
me a noticeable boost forward against the straps and I found I had to
push the nose down quite a bit further than I expected to maintain 70.
This is in an H201 with upper and lower surface brakes, not a B series:
at this speed a Libelle's brakes aren't as wimpy as many folks say they are.


--
martin@ | Martin Gregorie
gregorie. | Essex, UK
org |