Now showing items 1-10 of 12
Effect of Follower Forces on Aeroelastic Stability of Flexible Structures
(Georgia Institute of Technology, 2004-07-09)
Missile bodies and wings are typical examples of structures that can be represented by beam models. Such structures, loaded by follower forces along with aerodynamics, exhibit the vehicle's aeroelastic instabilities. The ...
Rotorcraft trim by a neural model-predictive auto-pilot
(Georgia Institute of Technology, 2005-04-14)
In this work we investigate the use of state-of-the-art tools for the regulation of complex, non-linear systems to improve the methodologies currently applied to trim comprehensive virtual prototypes of rotors and ...
Investigation of a stop-fold tiltrotor
(Georgia Institute of Technology, 2009-07-09)
In 1967 the US Air Force solicited proposals for ``low-disc-loading [Vertical Takeoff and Landing] configurations suitable for high speed flight.' Bell Helicopter elected to respond with a proposal after initial analysis ...
Enhancement of roll maneuverability using post-reversal design
(Georgia Institute of Technology, 2009-06-22)
This dissertation consists of three main parts. The first part is to discuss aileron reversal problem for a typical section with linear aerodynamic and structural analysis. The result gives some insight and ideas for this ...
Enhancement of aeroelastic rotor airload prediction methods
(Georgia Institute of Technology, 2009-04-02)
The accurate prediction of rotor air loads is a current topic of interest in the rotorcraft community. The complex nature of this loading makes this problem especially difficult. Some of the issues that must be considered ...
Variable-Fidelity Hypersonic Aeroelastic Analysis of Thin-Film Ballutes for Aerocapture
(Georgia Institute of Technology, 2007-04-09)
Ballute hypersonic aerodynamic decelerators have been considered for aerocapture since the early 1980's. Recent technology advances in fabric and polymer materials as well as analysis capabilities lend credibility to the ...
Interfacing comprehensive rotorcraft analysis with advanced aeromechanics and vortex wake models
(Georgia Institute of Technology, 2007-12-12)
This dissertation describes three aspects of the comprehensive rotorcraft analysis. First, a physics-based methodology for the modeling of hydraulic devices within multibody-based comprehensive models of rotorcraft systems ...
Static and dynamic aeroelastic simulation of wings with state space aerodynamic models
(Georgia Institute of Technology, 2000-05)
A reduced-order meshless energy (ROME) model for the elastodynamics of mistuned bladed disks
(Georgia Institute of Technology, 2002-05)
Optimal aeroelastic trim for rotorcraft with constrained, non-unique trim solutions
(Georgia Institute of Technology, 2008-02-15)
New rotorcraft configurations are emerging, such as the optimal speed helicopter and slowed-rotor compound helicopter which, due to variable rotor speed and redundant lifting components, have non-unique trim solution spaces. ...