Recent Advancements in Air Technology

Introduction to Influence of Forward and Descent Flight on Quadrotor Dynamics

The  focus  of  this  chapter is  an  aircraft  propelled with  four  rotors,   called  the  quadrotor. Quadrotor was among the first rotorcrafts ever built.  The first successful quadrotor flight was recorded in 1921, when  De Bothezat  Quadrotor remained airborne for two  minutes and  45 seconds. Later he perfected his design, which  was then  powered by 180-horse  power engine and was capable of carrying 3 passengers on limited altitudes. Quadrotor rotorcrafts actually preceded the  more  common helicopters, but  were  later  replaced by them  because  of very sophisticated control  requirements Gessow  & Myers  (1952). At the moment, quadrotors are mostly  designed as small or micro aircrafts capable of carrying only surveillance equipment. In the future, however, some designs, like Bell Boeing Quad TiltRotor,  are being  planned for heavy  lift operations Anderson (1981); Warwick (2007). In the last couple  of years, quadrotor aircrafts have been a subject of extensive research in the field of autonomous control systems. This is mostly because of their small size, which prevents them  to carry  any passengers. Various  control  algorithms, both  for stabilization and  control,…

Boomi Nathan

Active Flow Control by Using Plasma Actuators

Abstract Active flow control has recently received an increasing attention since it allows to directly manipulate the flow-field around a…

Boomi Nathan

Morphing Technologies: Adaptive Ailerons

Abstract European Union is involving increasing amount of resources on research projects that will dramatically change the costs of building…

Boomi Nathan
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