Patents

• Haidar, A. M. and A. A. Trezzini, Leonardo Helicopters, “Method for Estimating the Rotor Torques of an Aircraft Capable of Hovering and Control Unit for an Aircraft Capable of Hovering,” US Patent US-20250051037-A1, United States Patent and Trademark Office, 13 February 2025.
• Haidar, A. M. and A. A. Trezzini, Leonardo Helicopters, “Method for Estimating the Rotor Torques of an Aircraft Capable of Hovering and Control Unit for an Aircraft Capable of Hovering,” European Patent EP4201811, European Patent Register, 24 July 2023.

Articles

• A. M. Haidar and N. Albuck, “Coupled Torsional Dynamics and Gear Contact Model to Predict Tiltrotor Drive System Loads,” POLARIS Innovation Journal Issue 49/2023, Oct 26, 2023.
• Albuck, N., T. Mathur, and A. M. Haidar, “Development of a Coupled Torsional Dynamics and Gear Contact Model to Predict Peak Loads in a Tiltrotor Drive System,” Vertical Flight Society’s 79th Annual Forum & Technology Display, West Palm Beach, Florida, USA, May 2023.
• 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.
• 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.
• 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.
• 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.
• 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.
• 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.
• 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.
• 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.
• 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. 

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.
• 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.
• Haidar, A. M. (2015), “Comprehensive Model and Experimental Validation of Passive Vibration Suppression for Supercritical Rotary Machines,” M.S. thesis, The Pennsylvania State University.