|
|
1 - Mid-cockpit
brace
This series of articles will attempt to
explain why it is impossible to certify a G202:
The loads imposed by the JAR23 for a -10g aircraft with two pilots
on board, with a test temperature of 72°C, create very high
stress forces which tend to open the fuselage and separate the
mid-cockpit brace from the fuselage sides.
The solution adopted by CAP Aviation for
the CAP 222 is:
- new materials with better mechanical properties at high temperatures;
- fuselage spars all along the fuselage sides;
- new design of the mid-cockpit brace itself in order to optimize
the load distribution;
- larger bonding surfaces supporting shear load rather than peel
load.
This solution was successfully tested up to 17g with no damage
and the new fuselage was validated for the certified aircraft.
| A kit plane is one
thing, a certified aircraft is another. The less stringent
regulations used to develop kit planes are very useful to
quickly design and market new products, but it is impossible
to reuse the original kit design if you want to certify an
aircraft. |
|
