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  1. gyro

    Method of heating acrylic sheet.

    Can anyone advise the most efficient method of heating acrylic sheet for forming windscreens? I have heard that electric, bar type heaters of the room heater type are used but isn't there something like the frequency of the radiation to be considered? If the radiation was the right frequency...
  2. gyro

    Heating acrylic sheet.

    Can anyone advise the most efficient method of heating acrylic sheet for forming windscreens? I have heard that electric, bar type heaters of the room heater type are used but isn't there something like the frequency of the radiation to be considered? If the radiation was the right frequency...
  3. gyro

    Adhesive for polycarbonate sheet. "Lexan"

    Does anyone know what is the best adhesive for glueing bracing bits to polycarbonate canopies and windscreens? I have been told that silicone causes micro cracks, what else is there that wont let go? I hope there is an expert out there! Cheers, Gyro.
  4. gyro

    Adhesive for polycarbonate sheet.

    I need to stick edge supports to polycarbonate sheet, as in a windscreen. Can anyone tell me what sort of adhesive will stick to it and keep on sticking? Thanks for any advice, Gyro.
  5. gyro

    Fasteners for composite panels.

    I have to find suitable fasteners to hold the engine covers on a new, rear-engined, composite aircraft. The two mating surfaces are two layers of 300gram bi-directional glass thick. It would be preferable to have the fasteners flush with the surface if possible, but a small bump could be ok. Has...
  6. gyro

    Joint failure by bolt bearing

    I am currently working on a strut connection where the strut end is a block of aluminium (quite thick)and on each side of this is 4130 steel plates that connect to the fuselage. What I wanted help with is when doing the bolting bearing stress calculations on the hole. I found that the ultimate...
  7. gyro

    Hydraulic rudder operation.

    I have constructed some small cylinders to actuate the rudder on an ultralight aircraft. They are 19mm and 12mm (3/4" and 1/2") bore diameters. Two cylinders are at the pedals and two back at the rudder. When in operation, all four pistons are moving at once as the opposite side...
  8. gyro

    Hydraulic cylinder seal friction.

    I have constructed some small cylinders to actuate the rudder on an ultralight aircraft. They are 19mm and 12mm (3/4" and 1/2") bore diameters. Two cylinders are at the pedals and two back at the rudder. When in operation, all four pistons are moving at once as the opposite side...
  9. gyro

    Forming polycarbonate sheet.

    Due to the nonexistence of firms who will / can make aircraft canopies in polycarbonate in this part of Australia, we find ourselves in the position where we must make a compound curved canopy around four feet long, two and a half wide and two deep at the deepest point. We have a mould for the...
  10. gyro

    FEA on linux

    Hello I am a an aeronautical engineer and I am thinking about trying to use a linux based fea program for composites. Is there many (any) fea programs that might be capable of this kind of thing I could get of the internet? I am thinking that it is likely that I will have to try and modify some...

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