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  1. Macm_020171

    Forcetec rivetess nutplates

    Is anybody familiar with these rivetless nutplates that seem to have good application in composite structures? https://fatiguetech.com/products/forcetec-rivetless-nut-plates Thanks
  2. Macm_020171

    Control surfaces electric actuators stops.

    Hello community, I wanted to know how electric actuators in light aircraft stops the rotation of the control surface to the motion limit +/- deg. Are actuators including an integrated stop system (electronic or mechanical)? Or this stopping feature has to be integrated into the airframe...
  3. Macm_020171

    Composite Airframe Design Stress stack up versus design stack up of plies

    New in the composite airframe design. I was given a stack up of plies from Stress analysis group based on sizing criteria. Stack up looks symmetric and balanced. But I was asked to validate from a design point of view optimizing weight and manufacturing constraints. What I'm supposed to do...
  4. Macm_020171

    Curved dimensions in CATDrawing

    Hello, How can I do a curved dimension in a CATDrawing. This is used in composite design, when a ply EOP dimension is required on a curved surface. Normally the value of the dimension has a curve hat to specify it's not a linear dimension.
  5. Macm_020171

    CG sensitivity

    Hello, What is making an aircraft design more or less sensitive to CG location. I heard in the past that aircraft might me more CG sensitive than other aircraft, so CG might be quickly or no so quickly out of the envelope.
  6. Macm_020171

    Fuel dump risks.

    Hello, Is it possible that when JP-8 or jet A-1 fuel is dumped during flight, cause damage to the paint and primer coatings. Thinking about military aircraft. I've seen F-16s refueling when the boom disengage the port, sometimes fuel is leaked over the fuselage. But if there is a need to dump...

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