Andrew Karazihttps://andrew-karazi-personal.karaziandrew-ak.chatgpt.site/Personal site of Andrew Karazi — engineer.Imposing controlled axial deflection on a rotating shafthttps://andrewkarazi.com/blog/rotary-to-axial-displacement-fixture/https://andrewkarazi.com/blog/rotary-to-axial-displacement-fixture/Design notes on a swashplate mechanism.Vibration testing noteshttps://andrewkarazi.com/blog/vibration-testing-notes/https://andrewkarazi.com/blog/vibration-testing-notes/Sine sweeps, random vibration, resonance, accelerometers, and test documentation, with calculated examples.Telling Drones from Birds with Micro-Doppler Radarhttps://andrew-karazi-personal.karaziandrew-ak.chatgpt.site/blog/microdoppler/https://andrew-karazi-personal.karaziandrew-ak.chatgpt.site/blog/microdoppler/Rotating-blade simulation results, analytic comparisons, and unresolved validation issues in a micro-Doppler study.