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Hangar Flying / Alternate Lift Tab material
« on: March 01, 2005, 11:34:15 PM »
The stock, 2024-T3, .125 lift tabs are good for about 30 g's in the VariEze installation, and a bit less (of course) on a Long-EZ. They are quite well overdesigned for either airplane. As previously stated, you will obliterate the F-22 bulkhead in overload well-before the lift tabs become the weak link.
An alternate material like CRES (Corrosion REsistant Steel) is really not necessary, nor will it necessarily be a desireable substitute for aluminum. One has to worry about proper passivation (controlled development of a satisfactory oxide layer on the surfaces of the CRES) prior to any bonding or embedding into composite structures. Suffice to say, an improperly passivated CRES surface can actually corrode rapidly at bond or protrusion zones, due to lack of a properly established oxide layer.
Stick with the plans. There is nothing wrong nor weak in the canard attach configuration.
-Joe Person
Tech Counselor 4418
Structures & mech systems (aircraft) engineer
An alternate material like CRES (Corrosion REsistant Steel) is really not necessary, nor will it necessarily be a desireable substitute for aluminum. One has to worry about proper passivation (controlled development of a satisfactory oxide layer on the surfaces of the CRES) prior to any bonding or embedding into composite structures. Suffice to say, an improperly passivated CRES surface can actually corrode rapidly at bond or protrusion zones, due to lack of a properly established oxide layer.
Stick with the plans. There is nothing wrong nor weak in the canard attach configuration.
-Joe Person
Tech Counselor 4418
Structures & mech systems (aircraft) engineer