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This paper details the control and guidance architecture for the T-Wing tail-sitter unmanned air vehicle, (UAV). The vehicle uses a mixture of classical and LQR controllers for its numerous low-level and guidance control loops. Different controllers are used for the vertical, horizontal and transition flight modes, glued together with supervisory mode-switching logic. This allows the vehicle to achieve autonomous waypoint navigation throughout its flight-envelope. The control design for the T-Wing is complicated by the large differences in vehicle dynamics between vertical and horizontal flight; the difficulty of accurately predicting the low-speed vehicle aerodynamics; and the basic instability of the vertical flight mode. This paper considers the control design problem for the T-Wing in light of these factors. In particular it focuses on the integration of all the different types and levels of controllers in a full flight-vehicle control system. Keywords: UAVs, Guidance, Control, VTOL, Tail-sitter [ABSTRACT FROM AUTHOR]

Bringing together educators from a range of backgrounds--psychology, sociology, social work, counseling, and teaching--this volume shows how Asian cultural values and beliefs can provide a lens through which to understand and envision how curriculum and pedagogy can be creatively adapted, not only in a local Chinese classroom context, but in a global context as well. This book begins with a foreword by William Ayers and an introduction by Betty C. Eng. This book is divided into three parts. Part I, Culture of the Classroom, contains the following: (2) Teaching About Filial Piety and Learning from Its Antecedents (Chau-kiu Cheung and Alex Yui-huen Kwan); (3) The Applicability of Peer Learning and Peer Assessment in Hong Kong: A Cultural Perspective (Raymond Wai-man Chan and Alice M. L. Chong); and (4) Turning Conflict into Collaboration (Kathy Kam Ping Leung). Part II, Contextualizing the Curriculum, contains the following: (5) Teaching Group Counseling in Hong Kong: The Experience of a Teaching Excellence Award Winner (T. Wing Lo); (6) Subjective Process and Outcome Evaluation of a Social Work Methods Course: Findings Based on the Perspective of the Students (Tak-yan Lee, Esther O. W. Chow and Joannes M. W. Lee); (7) Teaching Sexual Diversity in Hong Kong: Challenging Homophobia (Diana Kan Kwok); and (8) Critical Self-Examination of Homophobia: A Sexual Diversity Teacher's Personal Journey (Yuen Chun and Louisa Chan). Part III, Learner and Learning: Expanding the Classroom, contains the following: (9) Implementing Volunteer Program to University Students in Hong Kong: Enhancing Volunteer Participation Through Service Matching and Organizational Support (E. Suk Ching Liu, Joseph Wu, T. Wing Lo and Anna N.N. Hui); and (10) Project X: The Project for Learning Excellence: A First-Year, Non-Credit Bearing, Department-Based, Co-Curricular Course for Students in Social Sciences (Katty P. Ho, Alice M. L. Chong, Stephanie Fung Yee Lai and Remus Kai Chun Kwok).

This ‘pictorial' Chapter presents a historical perspective on unmanned aerial vehicles (UAVs) starting from Ancient Greece to the beginning of the 21st Century. The UAV history, from a very early dream to today's reality is illustrated through a series of figures with detailed legends that are arranged mostly chronologically; they reveal the unmanned vehicle evolution and designs over a period of almost 2,500 years. The Chapter, even though it is non-technical, offers an accurate glimpse of history and helps the reader understand the tremendous level of growth in the unmanned systems area. Almost all figures have been taken from archives and web sites available on-line. The list is by no means complete, but it is very informative. The Chapter layout and contents are similar to Chapter 1 of reference [10]. [ABSTRACT FROM AUTHOR]