Spoiler placement and design.

"Bill Daniels" wrote in message
news

"B2431" wrote in message
...
Can anyone provide a site or advice on placement a details of
construction
and
design of spoilers?

Dan, U. S. Air Force, retired

What do you want the spoilers to do? Glide path control like a sailplane
or
slow an airplane down to flap/gear extension speed? If the latter, look
at
some Mooneys with speed brakes. If the former, visit a gliderport. There
are lots of variations.

One thing to keep in mind is that spoilers spoil the lift in a way that
redistributes it spanwise towards the wingtips. On sailplanes, this can
reduce the wing ultimate load factor from, say 5.5G to 3G - not a good
thing
if you are recovering from a dive.

Some people have even tried them as alternatives for ailerons - lots of
issues with this.

Bill Daniels


The Taylorcraft L-2M Grasshopper has wing spoilers, designed to kill lift.

On the subject of drooped ailerons and flaperons, I was just looking at an
Aztec with a Robertson STOL kit installed. The only mod I could see was
maybe a dam on the wing. I asked the IA where the hell the mods were, and
he said that the ailerons were drooped (30 degrees?) for takeoff. It was
supposed to get off in 700 feet, he said.