im designing case for outdoor antenna
It should stand wind forces and temperature from Khartoum to Alaska and UV degradation
the antenna size is 60x60x10 cm
what the recommend material for this application?
what the appropriate wall size for the antenna case?
I designing the mechanics of an antenna, the case of the antenna material would be from plastic, and have to be seal for 20 years in temperatures -40 c~50 c
what kind of o-ring of other sealing method should i use?
here calculation of beam natural frequencies at different fixing and free beam
http://web.mit.edu/2.75/fundamentals/FUNdaMENTALs%20Book%20pdf/FUNdaMENTALS%20Design%20Spreadsheets/Topic%208%20Structures%20Design%20Spreadsheets/Beam_frequency.xls
in beam fixing one end of the beam reduce the...