Highest pressure in CPP hub at low pitch?

Discussion in 'Props' started by tsimon, Jul 27, 2012.

  1. tsimon
    Joined: Jul 2012
    Posts: 1
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Gothenburg

    tsimon New Member

  2. jehardiman
    Joined: Aug 2004
    Posts: 3,690
    Likes: 1,077, Points: 113, Legacy Rep: 2040
    Location: Port Orchard, Washington, USA

    jehardiman Senior Member

    Blade AoA is always highest at bollard (well...crash back for highly skewed blades), even when de-pitched. So therefor the blade moment (and so CP gear torque) is greatest. FWIW, most propeller sections are designed around blade moment and root bending at bollard, and some are installed with RPM limits in that (and crash back) condition to prevent blade failure.
    1 person likes this.
Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.