Yohannes Ketema

Yohannes Ketema

Yohannes Ketema

Contract Associate Professor,
Department of Aerospace Engineering and Mechanics

Contact

Akerman Hall
Rm 205D
110 Union Street SE

Minneapolis,

MN

55455

Education

Ph.D., Royal Institute of Technology, Stockholm, Sweden, 1992

Licentiate of Engineering: Royal Institute of Technology, Stockholm, Sweden, 1989

Masters of Science: Royal Institute of Technology, Stockholm, Sweden, 1987

Professional Background

Contract Associate Professor, Aerospace Engineering & Mechanics, University of Minnesota, 2003-Present

Director of Undergraduate Studies, 2003-2004

Contract Assistant Professor, Aerospace Engineering & Mechanics, University of Minnesota, 1993-2003

Teaching Assistant, Royal Institute of Technology, Stockholm, Sweden, 1986-1993

Research Engineer, Royal Institute of Technology, Stockholm, Sweden, 1993

Research Interests

Dr. Ketema's research broadly in the area of dynamics. He has studies the dynamics of active materials such as shape memory alloys, especially regarding their use for the purpose of vibration damping and control. Dr. Ketema has also done research in optimal trajectory generation for unmanned aerial vehicles, dynamics and stability of formations, orbital mechanics, and the mechanics of human walking. In particular, current research topics include optimal transfers between relative orbits of space vehicles, and the use of kinetic models of human gait for step-size determination for use in pedestrian navigation systems and related applications. 

For more information about Dr. Ketema's research click here

Currently Teaching Courses
AEM 4602W -- Aeromechanics Laboratory
AEM 5401 -- Intermediate Dynamics
Honors and Awards

2019: AIAA Associate Fellow

2010: Outstanding Instructor Award, Institute of Technology Student Board, University of Minnesota 

2008: Outstanding Instructor Award, Institute of Technology Student Board, University of Minnesota

2007: Outstanding Instructor Award, Institute of Technology Student Board, University of Minnesota

2005: Outstanding Instructor Award, Institute of Technology Student Board, University of Minnesota

2002: Outstanding Instructor Award, Institute of Technology Student Board, University of Minnesota

1999: Outstanding Instructor Award, Institute of Technology Student Board, University of Minnesota

1997: Outstanding Instructor Award, Institute of Technology Student Board, University of Minnesota

1996: Outstanding Instructor Award, Institute of Technology Student Board, University of Minnesota

Selected Publications

Y. Ketema, 2017, Asteroid Deflection Using a Spacecraft in Restricted Keplerian Motion, Acta Astronautica, Vol. 136, p. 64-79, (Journal Article) 

Y. Ketema, D. Gebre-Egziabher, M. Schwartz, R. Kirker, and C. Matthews, 2014, Use of Gait Kinematics in Sensor Based Gait Monitoring: A Feasibility Study, Journal of Applied Mechanics, Vol. 81, Issue 4, (Journal Article)

Y. Ketema and Y.J. Zhao, 2010, Controllability and Reachability for Micro-Aerial-Vehicle Trajectory Planning in Winds, Journal of Guidance, Control, and Dynamics,, 33, 3, (Journal Article) 

Y. Ketema and Y.J. Zhao, 2010, Micro Air Vehicle Trajectory Planning in Winds, Journal of Aircraft, 47, 4, (Journal Article) 

Ketema Y., 2009, Optimal Satellite Transfers Using Relative Motion Dynamics, Journal of Guidance Control and Dynamics, 32, 5, 1508-1518, (Journal Article)