1 / 12

Ryan T. Casey

RPI Masters Engineering Project: Preliminary Design and Optimization of Composite Tension-Torsion Strap for Rotor Systems 4/21/2010. Ryan T. Casey. CF Load Torsional Twist due to Pitch Input Small Flatwise Bending due to Pitch Housing Deflection. Tension-Torsion Strap.

cora-moses
Download Presentation

Ryan T. Casey

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. RPI Masters Engineering Project:Preliminary Design and Optimization of Composite Tension-Torsion Strap for Rotor Systems4/21/2010 Ryan T. Casey

  2. CF Load • Torsional Twist due to Pitch Input • Small Flatwise Bending due to Pitch Housing Deflection Tension-Torsion Strap MD500 Rotor System

  3. Methodology • Utilize Classic Laminate Theory to Determine Equivalent Material Properties • Create ANSYS models (static) • Determine Kts • Determine Stresses & Strains in Pitch Section, Lug-to-Pitch Section Transition • Lug Failure Modes • Optimize Geometry • Recommendations for Future Work

  4. ANSYS Models

  5. Preliminary Design Constraints • Lug Sizing - e/d = 2 • Use IM7/8552 (Carbon/Epoxy) Unidirectional Tape • Case1 (02/+-452/902/+-452/02) • Case2 (0/+-45/0) • Case3 (03/+-45/03) • Length Varies between 12-18 in • CFmax = 30000lb, Max Pitch Angle = +/- 10deg

  6. Stress Concentration (Kt)

  7. MSnt = 0.27 for max CF load 30,000lb Lug Analysis Net Tension Failure Load (Pnt) Bearing Failure

  8. FEA Results 0.4% Elongation

  9. FEA Results • Effect of Flatwise Bending Load on Shear Stresses • 0.5 deg flatwise displacement

  10. Final Configuration

  11. Recommendations

  12. Questions?

More Related