Cibin Joseph

Cibin Joseph
Brigham Young University | BYU · Department of Mechanical Engineering

Doctor of Philosophy
Research Associate at BYU

About

10
Publications
3,784
Reads
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32
Citations
Additional affiliations
July 2014 - December 2020
Indian Institute of Technology Ropar
Position
  • PhD Student
Description
  • Rotorcraft aeromechanics would be the broad field that pertains to my work here. I worked on vortex lattice methods and their applications on multi-rotor/wing systems. I've also worked on dynamic stall, rotorcraft CFD and a few rotorcraft trim problems.
Education
July 2010 - July 2014
Government Engineering College, Thrissur
Field of study
  • Mechanical Engineering

Publications

Publications (10)
Conference Paper
Full-text available
Large-scale gradient-based Multidisciplinary Design Optimization (MDO) can aid in the exploration of high-dimensional design spaces for novel air vehicle concepts, thereby leading to more efficient and economic designs. This paper builds on past works where we demonstrated large-scale physics-based MDO capabilities and applied these to NASA’s lift-...
Article
Full-text available
We present compact closed-form expressions of the lift and moment coefficients predicted by thin-airfoil theory for camber line geometries of the NACA 4 and 5-digit airfoils and a generalized polynomial thin-airfoil. For the generalized camber curve, the solution is achieved by means of the integral form of the beta function. These general solution...
Preprint
Full-text available
The development, validation, and applications of an object-oriented free-wake solver for multi-rotor and fixed-wing systems are outlined here. Advantages of utilizing the object-oriented philosophy for modeling the multi-rotor/wing free-wake problem are described. To explore the feasibility of utilizing conventional desktop workstations, the vortex...
Conference Paper
Full-text available
Cheeseman's factor for ground effect-based on image sources-has widely been used to account for the increase in thrust experienced by a lifting rotor in ground effect. However, for elevations lesser than half the rotor radius, the factor is known to drastically over predict this thrust augmentation. Even though these elevations may not be viable to...
Conference Paper
Full-text available
A well-known phenomenon in rotorcraft, the ground effect, occurs when a rotor is at close proximity to the ground creating an obstruction to the trailing wake from the rotor. This results in an increase in thrust and a decreased inflow through the rotor disk, in turn affecting handling qualities. Until recently, analytical modelling of ground effec...
Conference Paper
Full-text available
Rotorcraft flying in close proximity to ground are known to generate a larger thrust due to the shed wake being obstructed by the ground. The effect has been well researched and empirical corrections are available in literature. However, studies on the influence of side walls on ground effect is still lacking. Such studies may be applied to full sc...

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