Bøger af Harijono Djojodihardjo

This textbook is intended as a core text for courses on aeroelasticity or aero-elasto-mechanics for senior undergraduate/graduate programs in aerospace and mechanical engineering. The book focuses on the basic understanding of the concepts required in learning about aeroelasticity, from observation, reasoning, and understanding fundamental physical principles. Fundamental and simple mathematics will be introduced to describe the features of aeroelastic problems, and to devise simple concurrent physical and mathematical modeling. It will be accompanied by the introduction and understandings of the mechanisms that create the interactions that generate the aeroelastic phenomena considered. The students will also be led to the relation between observed phenomena, assumptions that may have to be adopted to arrive at physical and mathematical modelling, interpreting and verifying the results, and the accompanied limitations, uncertainties and inaccuracies. The students will also be introduced to combine engineering problem solving attitude and determination with simple mechanics problem-solving skills that coexist harmoniously with a useful mechanical intuition.

Coand¿ effect, a day-to-day observable phenomenon, is elucidated as a flow control technique. Its utilization for Micro-Air Vehicle is elaborated comprehensively using fundamental principles in aerodynamics for Coand¿ effect lift generation in hovering and translation, and Newtonian equation of motion to exemplify basic flight mechanic maneuvering examples. Relationships between pertinent design parameters such as Coand¿ jet dimensions and power requirements can be utilized for preliminary design considerations.