SPORT ROCKETRY JANUARY/FEBRUARY 2020 29
the simpler and easier to master Rudder-
Elevator control.
In all, I decided to make the following
changes to Bob Parks's beautiful Phoenix
design so a beginner like me could build
and fly it:
1. I preserved the general outline of the
fuselage, including the critical thrust angle
for the motor tube.
2. I substituted a simple slab-sided
outline for the fuselage, easily cut from
balsa with 1/32" sheet plywood reinforce-
ment on the front half.
3. The key redesign is based on sub-
stituting an all-balsa, built-up polyhedral
wing with a flat-bottom airfoil, and with-
out ailerons. I used the wing design of
the "Midwest 2x4" glider, reinforced with
spruce spars, top and bottom, and covered
with Monocote™. I found the plans for
the 2x4 available on the Internet for free
download.
4. The control set-up of my model
based on rudder and elevator ("2-channel"
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Figure 2. Doomed prototype rocket powered
RC canard glider before launch.
