RCSD-2012-11 - RC Soaring Digest

At the end, I will provide you with the
result of my own rationale and deliver
a full glider definition set - a glider that
appears to be optimum and far cheaper
than any commercial design set, a glider
you can build either with foam and
composite materials, epoxy and bagging
or with structural techniques as I did.
How to structure a rationale
The rationale has three steps:
• Regulation analysis and classification
of points that appears important to win.
• Identification of the trigger elements of
a plane and their classification in relation
to the regulation and air conditions.
• Definition of the plane that meets such
trigger classification.
Regulation analysis
The F5J regulation is quite simple:
4 meter maximum for the wing span,
electric propulsion, 30 seconds to climb
up to 200m altitude, and a penalty of
0.5 point per meter gained with the
propulsion on.
You have to perform a ten minute flight
that includes the altitude gain with the
motor and a precision landing (1m 10
points).
Figure 1: This is the ancestor (2008/2009) of the Genoma: The “Pamespumas,” an F3B
plane from my friend P. Medard (PAtrick + MEdard + PUjol + MArc= Pasmespumas)
that I have transformed to experiment with yawing stability. This was a first revolution
for me. But not the last one!
November 2012 5