Publications

Articles

  • DeNicola, L., L. Belluomini, S. Xiao, and A. M. Haidar, “Flight Test Validation of Thrust Axis Tactile Cueing System on AW609 Tiltrotor,” Vertical Flight Society’s 78th Annual Forum & Technology Display, Fort Worth, Texas, USA, May 2022. Download
  • Haidar, A. M., L. Belluomini, and A. A. Trezzini, “AW609 Civil Tiltrotor Drive Train Torsional Stability Analysis and Certification Test Campaign,” Vertical Flight Society’s 77th Annual Forum & Technology Display, Virtual, May 2021. Download
  • Lilliu, C., M. Favale, G. Tovo, A. A. Trezzini, N. Donini, and A. M. Haidar, “AeroServoElastic Test Campaign of the AW609 Civil Tilt-Rotor,” Vertical Flight Society’s 77th Annual Forum & Technology Display, Virtual, May 2021. Download
  • Haidar, A. M. and J. Palacios, “Modified Ball-type Automatic Balancer for Rotating Shafts: Analysis and Experiment,” Journal of Sound and Vibration, 496 (2021) 115927. Download
  • Haidar, A. M. and J. Palacios, “Effect of Number of Tracks and Balancing Masses on Passive Balancing Performance”, 2018 AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, AIAA SciTech Forum, (AIAA 2018-2214), Kissimmee, Florida, USA, Jan 2018. Download
  • Haidar, A. M. and J. Palacios, “Parametric studies on modified configurations of ball-type passive balancers for improved transient and steadystate responses,” Journal of Sound and Vibration, 432C (2018) 633-652. Download
  • Haidar, A. M. and J. Palacios, “Experimental Model Validation of a Passive Balancing Device for Supercritical Helicopter Driveshafts,” AHS International’s 72nd Annual Forum & Technology Display, Palm Beach, Florida, USA, May 2016. Download
  • Haidar, A. M. and J. Palacios, “A general model for passive balancing of supercritical shafts with experimental validation of friction and collision effects,” Journal of Sound and Vibration, 384 (2016) 273–293. Download
  • Haidar, A. M. and J. Palacios, “Passive Rotor Blade Balancing System for Unsymmetrical Ice Accretion,” American Institute of Aeronautics and Astronautics Region I Student Conference, Ithaca, New York, USA, 25 April 2014. Download

Lectures

  • Haidar, A. M. (2021, September), “Flight Testing of the AW609 Civil Tiltrotor.” Presented for the Penn State Chapter of the Vertical Flight Society, Pennsylvania State University, University Park, Pa. Download
  • Haidar, A. M. (2018, April), “Real-time Vibration Control of Supercritical Shafts via Passive Bearing.” Presented at the Center for Acoustics and Vibrations (CAV) Technology Transfer Workshop, Pennsylvania State University, University Park, Pa.

Theses

  • Haidar, A. M. (2018), “Vibration Control of Shafts via Automatic Passive Balancing,” Ph.D. dissertation, The Pennsylvania State University. Download
  • Haidar, A. M. (2015), “Comprehensive Model and Experimental Validation of Passive Vibration Suppression for Supercritical Rotary Machines,” M.S. thesis, The Pennsylvania State University. Download