Unmanned aerial vehicle

Polymethacrylimide (PMI) rigid foams as the core material for composites used in buses, aerospace launch vehicles, commercial and military aeroplanes, unmanned aerial vehicles, helicopters, ships, high-speed trains. Formula One racing cars, high-performance bicycles, cross-country skis. .. 

Mini-UAV Design of a Mini-UAV(Unmanned Aerial Vehicle) using a Fuel Cell Propulsion System. Development of a knowledge centre on PC technology. 

Fast response is possible with swelling-based sensing mechanisms. For example, the mapping of a chemical plume caused by a release into the air could employ such a sensor positioned on an unmanned aerial vehicle (UAV). With this vehicle traveling at 40 miles/h, subsecond response times would be required to locate and map out the released analyte. An example of this is shown in Fig. 16, which describes a thin film of poly(2,2-bistrifluoromethyl-4,5-difluoro-l,3-dioxole-co-tetrafluoroethylene), Teflon AF placed on an interferometer which in turn was placed in the nose cone of an UAV, which was positioned in a wind tunnel with the wind moving at 40 mph. Small amounts of toluene vapor were introduced into the air stream to get an idea of whether the sensor would work in such an application. The sensor responded quickly, established equilibrium in seconds, and reversibly returned to baseline after the material passed. 

The pCAD provided for the first time true real-time agent detection capabilities with subsecond equilibrated agent responses. It offers robust performance for ground and unmanned aerial vehicle applications in an environment with dynamically changing humidity and temperature a palm-sized system fabricated with commercial off-the-shelf components and low-power operation with no consumables. 

UAV UGV USAF USAMRICD unmanned aerial vehicle unmanned ground vehicle U.S. Air Force U.S. Army Medical Research Institute of Chemical Defense... 

Drone is a type of unmanned aerial vehicle (UAV). That was invented in 1974. Although drones are mostiy used in military and defense services, gradually these are finding places in other applications such as search and rescue, disaster relief, aerial survey and surveillance, transportation of medicines and essentials to... 

Unmanned Aerial Vehicle-Borne Hybrid Optical Sensor... 

Drones (Unmanned Aerial Vehicles) and Targeted Killing. 222... 

Cao, L. Harrington, P.B. Harden, C.S. McHugh, V.M. Thomas, M.A., Nonlinear wavelet compression of ion mobility spectra from ion mobility spectrometers mounted in an unmanned aerial vehicle. Anal. Chem. 2004, 76, 1069-1077. 

Recent aircraft design has focused on the development of unmanned aerial vehicles (UAVs). This class of aircraft has been successfully adapted to perform many of the same roles as manned aircraft but at lower cost. The absence of a pilot eliminates many of the safety and life support requirements and also changes the control objectives. For example, rapid acceleration or a bumpy trajectory can hinder a pilot s ability to cOTitrol the aircraft but do not affect the control system of a UAV. Another advantage of UAVs is that they can be used in environments that are xmdesirable for humans. This may include a combat zone or a toxic chemical plume. Moreover, many mission profiles do not require a large payload, and UAVs can be built much smaller to perform these missions because they do not have to support the extra weight of a pilot. Advancements in miniaturization have simultaneously made it possible to build smaller and smaller aircraft. 

Micro- and Nanoscale Anemometry Implication for Biomedical Applications, Fig. 9 (a) An unmanned aerial vehicle installed with shear stress sensor skin along the leading edge of the delta wing. The inset... 

Xu Y, Jiang F, Newbem S, Huang A, Ho C-M, Tai Y-C (2003) Flexible shear-stress sensor skin and its application to unmanned aerial vehicle. Sens Actuators A 105 321-329... 

Flexible shear-stress sensor skin and its application to unmanned aerial vehicles. Sens Actuators A 105 321-329... 

Certain types of weapons have been considered so horrendous that their use has been proscribed by international law. Important examples of such restrictions include the Biological and Toxin Weapons Convention (1972), the Chemical Weapons Convention (1993) and the recent Convention on Cluster Munitions (2010). These conventions have made valuable contributions to the protection of life. However, they also have limitations. For example, major producers and users of cluster munitions, including Israel, Russia and the United States, have not signed the CCM. Furthermore, there are always temptations to find ways around such legislation or to develop entirely new types of weapons. Two of the many such possibilities will be noted here the use of drugs as weapons and the use of drones (unmanned aerial vehicles). 

In 1998, Scaled Composites, an aerospace research company, unveiled the Proteus aircraft (Figure 23.18), designed for long duration high altitude operations, intended for piloted as well as unmanned aerial vehicle missions. 

Scaled Composites used an all graphite construction for a two blade controllable pitch unit for the Raptor unmanned aerial vehicle, which could be converted to a manned configuration. 

---