Recent content by pegus

  1. P

    What are the equations for selecting a motor for an RC plane?

    Good day, I am starting to design a new cargo RC plane and I end with this trouble. I want to select a motor but I do not know the required trust. Is there any equation or steps that I can apply to decide the motor?? Thanks!
  2. P

    Designing Ailerons for School Project Wing

    Good day everyone, I was designning the wing for a school project and I wonder if there is any equation for defining the aileron size. I am designing a straight rectangular wing. I just found on other forums that the aileron's length should be 0.25 of the wingspan and the aileron chord should be...
  3. P

    Rectangular vs Tapered vs Elliptical Wing planform

    No, I am planning to select the adequate wing planform for a project. We are designning a small cargo plane. But I just know that the elliptical wing has the best lift distribution, the tapered wing reduce the induced drag, and the rectangular is more economically and easier to manufacturate.
  4. P

    Rectangular vs Tapered vs Elliptical Wing planform

    I wonder what are the advantages and disvantages of the rectangular, tapered and elliptical wing planforms.
  5. P

    Wing Spar Location: Aerodynamic Center - S1223 Airfoil

    Hi, I wonder where is the best location for a wing spar thorugh its cord. Up to where I know it is on the Aerodynamic center (approximately 1/4 of the chord from the leading edge) because is the point on the chord where the lift acts. I am using a 17in chord S1223 airfoil.
  6. P

    Most accurate method for static analysis of a wing spar?

    Ok, so if my total lift force is 30lbs, and half of the wingspan is 51" (because I am analyzing half of the wing as cantilivier), the distributed lift will be (15lb/51"), right?
  7. P

    Most accurate method for static analysis of a wing spar?

    This analysis is to get the safety factor of the spar and the displacement on the tips when the plane is flying. Is a rectangular wing, and the spar will be located on the aerodynamic center (approximately 1/4 of the chord from the leading edge), up to where I know this is where the lift acts.
  8. P

    Most accurate method for static analysis of a wing spar?

    I am trying to figure out which is the most accurate way to perform the static analysis of a wing spar. Some partners told me to analyze it in cantiliver and the half of the lift force on the tip, but I do not think this is the proper way because the lift does not act on the tips. I was thinking...