Derek Copeland wrote:
Jack,

I know that a UK pilot removed a transponder aerial
from his glider part way through a Nationals competition
because he was losing too much performance in relation
to his competitors in similar gliders. Also I fly a
Standard Cirrus, so I need all the performance I can
get!

You can't measure the performance loss that a transponder antenna on
your Std Cirrus, the drag is so little; nonetheless, the fiberglass
fuselage will let you mount one internally. The big advantage is it's
protected from ground and handling damage.

--
Change "netto" to "net" to email me directly

Eric Greenwell - Washington State, USA

www.motorglider.org - Download "A Guide to Self-launching Sailplane
Operation"