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  1. Hamid 'Smith' Salehi

    PID Tuning For High power model rockets

    Hello friends, how professional model rocket designers adiust / tune the PID parameters of high power model rockets for their stability? I mean those who use an active stabilizer system with canards, because TVC cannot be used easily in high power model rockets, are they using a software for...
  2. H

    Parachute drag coefficient on openrocket

    Hey folks! l am a student freshman level at university. l am planning to build HPR and have a problem. l want to use Dacron polyester material for my parachute. l am not sure whether Cd is correct on openrocket software or not. As Nasa resources, ıt would be 1.75. But as openrocket software ...