Unmanned aerial vehicles (UAVs) come in many versions and due to their relatively small size and ability to fly without an on-board pilot (remote control or autonomously), have endless applications.
The two most general categories are fixed wing and the rotary. Each of these two types of unmanned aerial vehicles come with their specific advantages and disadvantages which are very important in deciding what kind of UAV you require for your particular application.
A rotary aircraft will give you superior manoeuvrability, indoors or out and are perfect for structural inspection, short range mapping and photography. Although they have limited endurance and speed, they more than make up for it with their versatility. Their Vertical Take Off and Landing (VTOL), allows them to operate from most terrains and within confined spaces. Fixed wing aircraft can fly high, fast and for long periods at a time. They are designed to be robust, easy to operate and can be launched by hand or from a catapult. They are ideal for long range surveys, surveillance, tracking and highly cost-effective tactical ISTAR.