An Attitude Heading Reference System (AHRS) is used to compensate for rotational motion, facilitating vision-based navigation above smooth terrain by generating virtual images to simulate pure translation movement. The AHRS combines inertial and earth field magnetic sensors to provide absolute orientation measurements, and our recently developed calibration routine determines the rotation betwe...

TITLE In recent years the development of unmanned platforms has exasperated the concept of design and planning in aeronautics: for unmanned flight, in fact, the aerial segment is no longer the central issue and concepts like mission planning, mission and on board sensor management are becoming more and more critical. The majority of these functionalities have been separated from the aerial segm...

The problem of visual control of an indoor blimp autonomously is investigated in this chapter. Autonomous aerial vehicles have been an attractive platform for a wide range of applications, especially since they don’t have the terrain limitations the autonomous ground vehicles face. They have been used for advertisements, terrain mapping, surveillance and environmental research. Blimps are a spe...

In this paper, a performance prediction method is proposed for the design of stratospheric propeller. The Spalart–Allmaras (S–A) model was used to calculate airfoil FX63, and polynomial fitting utilized establish database lift drag coefficient. A computational fluid dynamics (CFD) applied at different altitudes prove feasibility method. CFD results were compared with vortex theory prediction; r...