• • An unmanned aerial vehicle (UAV) commonly known as is an aircraft without a human pilot on board.
    UAVs are component of an unmaned aircraft system (UAS).
    The flite of UAVs may operate with various degrees of autonomy.
  • Remote control by human operator.
    Autonomously by onboard computer referred to as an autopilot.

Photography & Cinematography

• • Drone use for photography and cinematography also allows for remarkably nimble flying giving access to areas that were not possible before.
  • Just one UAV pilot, a camera operator and you’re up and running. In short, drones have literally revolutionised each industry.

Mapping

• • UAVs are the most powerful tool for safely capturing accurate aerial data quickly.
  • Taking advantage of our drones and mapping technology, you can also create collaborative maps and 3D models.

• • A quad copter, is a multi-rotor helicopter that is lifted and propelled by rotors.
  • Each rotor produces both a thrust and torque about its center of rotation .
  • The quad copter has four motors whose speed of rotation and the direction of rotation vary according to the user operate it.

• • Movement of drone about lateral axis .
  • If two rear propellors run at high speed, then the drone will move in forward direction.
  • If two front propellors run at high speed then the drone will move in the backward direction.

• • True x – the perpendicular distance between the centre of each motor is equal.
  • Wide x- more central space is often required to mount an action camera and battery on top of the frame.
  • Stretch x – stretch x is typically favored by racers.

• • Propeller converts rotational power from the engine into thrust.
  • The rotating blade of a propeller shares similar characteristics to a wing passing through the air.
  • A propeller blade generates thrust f through an aerodynamic lift force component, demands an engine torque q to overcome aerodynamic drag.
  • Additional factors – trailing vertex generation, tip losses, compressibility.

• • The operation of BLDC is based on the simple force interaction between the permanent magnet and the electromagnet. In this condition, When the coil A is energized, the opposite poles of the rotors and stator are attracted to each other. As result the rotator poles move near to the energized stator.

• • An electronic speed control will have 3- sets of wires.
  • One wire will plug into the main battery of an airplane.
  • The second wire will have a typical servo wire that plugs into the receiver’s throttle channel.
  • The third wire is used for powering the motor.
  • The main features of an electronic speed control include battery eliminator ciruit , low voltage cutoff, break, and to.

• • Battery size is the first point you need to consider because the size is often related to capacity.
  • The larger the battery, the more capacity stored and the longer it can fly.
  • A battery that is too large will add to the overall weight of the drone, thus reducing flight time and affecting the flight experience.
  • Therefore, you need to choose the capacity while keeping the maximum takeoff weight of the drone.

• • Low operation speed: UAVs fly at low speed making them slower compared to manned aircraft.
  • Vulnerable to hackers: UAVs vehicles are controlled at remote area thus they require a data link with the base control.
  • Invasion of privacy:Drones survey an area through a remote control. The high-power zoom lenses, see-through imaging, and its night vision make it easy to capture images or record activities in an area.