Browsing by Author "Dancila, Dragos Stefan"
Now showing items 1-8 of 8
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A Scaling Investigation of Feasibility and Hover Endurance for Electric Quasi Quadrotor Configurations
Venepalli, Budhyant; 0000-0002-6787-3274 (2020-08-05)Motivated by recent developments in distributed propulsion electric vehicles, an effort is made in the present study to numerically investigate the upper bound of hover endurance achievable by electric quasi-quadrotors at ... -
Airfoil-shaped Extension-twist-coupled Composite Star-beams For Rotor Blade Tip Applications
Mahadev, Sthanu (Aerospace Engineering, 2011-10-11)Rotorcraft blade tips provide the most effective region for aerodynamic control. Rotor blade airloads are proportional to dynamic pressure and as a consequence are typically the highest in the distal blade tip region. ... -
Computational Investigation of Energy Dissipation through Progressive Failure in Tailored Composite Structures via Explicit Finite Element Analysis
Srinivas, Anirudh (2021-08-16)In this study, energy dissipation in structures implementing a previously developed, analytically modeled, and experimentally validated composite tailoring concept is investigated using an explicit finite element approach. ... -
Development Of Ultra-high Temperature Material Characterization Capabilities Using Digital Image Correlation Analysis
Cline, Julia Elaine (Aerospace Engineering, 2011-10-11)Ultra-high temperature deformation measurements are required to characterize the thermo-mechanical response of material systems for thermal protection systems for aerospace applications. The use of conventional surface-contacting ... -
Extension Of A Progressive Failure, Energy Dissipation, Composite Tailoring Concept To A Healing Configuration
Divey, Shailesh Jayant (Materials Science & Engineering, 2011-10-11)A composite failure tailoring concept that results in a yield type response under tension has been proposed, modeled, and experimentally verified in prior research. The concept capitalizes upon a sequential, progressive ... -
Finite Element Based Cross-Sectional Buckling Optimization for a Constant Area, Pinned-Pinned Composite Column
Srinivas, Anirudh; 0000-0003-3319-7420 (2016-05-10)In archery, dynamic buckling compromises the target accuracy of arrows. For both dynamic and quasi-static buckling, the buckling load depends on the cross-sectional area moment of inertia, which can be increased by modifying ... -
Finite Element Based Stability Constrained Weight Minimization Of Sandwich Composite Ducts For Airship Applications
Khode, Urmi B. (Aerospace Engineering, 2011-10-11)High Altitude Long Endurance (HALE) airships are platform of interest due to their persistent observation and persistent communication capabilities. A novel HALE airship design configuration incorporates a composite sandwich ... -
FINITE ELEMENT BASED WEIGHT REDUCTION SUBJECT TO STABILITY CONSTRAINTS FOR AN AIRSHIP COMPOSITE DUCT
Umbrajkar, Soham M.; 0000-0001-9848-9825 (2016-05-10)The primary functions of High Altitude Long Endurance (HALE) airships are persistent observation and wide area direct line of sight communication. Traditional airships have an ellipsoidal type hull, which is characterized ...