Now showing items 1-10 of 17
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 ...
Design, testing, and performance of a hybrid micro vehicle - the Hopping Rotochute
(Georgia Institute of Technology, 2009-05-04)
A new hybrid micro vehicle, called the Hopping Rotochute, was developed to robustly explore environments with rough terrain while minimizing energy consumption over extended periods of time. Unlike traditional robots, the ...
Simulation of magnetohydrodynamics turbulence with application to plasma-assisted supersonic combustion
(Georgia Institute of Technology, 2009-01-14)
The main objective of this thesis is to develop a comprehensive model with the capability of modeling both a high Reynolds number and high magnetic Reynolds number turbulent flow for application to supersonic combustor. ...
Stability and control issues associated with lightly loaded rotors autorotating in high advance ratio flight
(Georgia Institute of Technology, 2008-10-22)
Interest in high speed rotorcraft has directed attention toward the slowed-rotor, high advance ratio compound autogyro concept. The behavior of partially unloaded rotors, autorotating at high advance ratio is not well ...
A multi-fidelity framework for physics based rotor blade simulation and optimization
(Georgia Institute of Technology, 2008-11-17)
New helicopter rotor designs are desired that offer increased efficiency, reduced vibration, and reduced noise. This problem is multidisciplinary, requiring knowledge of structural dynamics, aerodynamics, and aeroacoustics. ...
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 ...
Aerodynamic design applying automatic differentiation and using robust variable fidelity optimization
(Georgia Institute of Technology, 2008-09-03)
In modern aerospace engineering, the physics-based computational design method is becoming more important. However, high-fidelity models require longer computational time, so the advantage of efficiency is partially lost. ...
A hybrid flow analysis for rotors in forward flight
(Georgia Institute of Technology, 2000-08)
On the flowfield and forces generated by a rectangular wing undergoing moderate reduced frequency flapping at low reynolds number
(Georgia Institute of Technology, 2001-05)