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Fly High AT-Lead

Drone Designing

A quadcopter, also called a quadrotor helicopter, quadrotor, is a multirotor helicopter that is lifted and propelled by four rotors. Quadcopters are classified as rotorcraft, as opposed to fixed-wing aircraft, because their lift is generated by a set of rotors (vertically oriented propellers).

Unlike most helicopters, quadcopters use two sets of identical fixed pitched propellers; two clockwise (CW) and two counter-clockwise (CCW). These use variation of RPM to control lift and torque. Control of vehicle motion is achieved by altering the rotation rate of one or more rotor discs, thereby changing its torque load and thrust/lift characteristics.

Early in the history of flight, quadcopter configurations were seen as possible solutions to some of the persistent problems in vertical flight; torque-induced control issues (as well as efficiency issues originating from the tail rotor, which generates no useful lift) can be eliminated by counter-rotation and the relatively short blades are much easier to construct. A number of manned designs appeared in the 1920s and 1930s. These vehicles were among the first successful heavier-than-air vertical takeoff and landing (VTOL) vehicles. However, early prototypes suffered from poor performance, and latter prototypes required too much pilot work load, due to poor stability augmentation and limited control authority.

There are several advantages to quadcopters over comparably-scaled helicopters. First, quadcopters do not require mechanical linkages to vary the rotor blade pitch angle as they spin. This simplifies the design and maintenance of the vehicle. Second, the use of four rotors allows each individual rotor to have a smaller diameter than the equivalent helicopter rotor, allowing them to possess less kinetic energy during flight. This reduces the damage caused should the rotors hit anything. For small-scale UAVs, this makes the vehicles safer for close interaction. Some small-scale quadcopters have frames that enclose the rotors, permitting flights through more challenging environments, with lower risk of damaging the vehicle or its surroundings. 

 

Topics to be covered

  1. Understanding rotary-wing aircraft and their Dynamics
  2. Exposure to Design and concepts of Embedded Systems behind Multi copters
  3. Fabrication of Quadcopter frame and its circuit
  4. Calibration and Testing of the developed Quadcopter
  5. Quadcopter Flying using Radio Control and competition

Course Outcomes

  1. Introduction to Rotary-wing aircraft
  2. Introduction to design and development of Multi Rotor Vehicles
  3. Understanding the Electronics circuitry involved in Quadrotor
  4. Learning about the working of accelerometer sensors, gyroscopes and controllers
  5. Hands-on experience for participants with DC motors, electronic speed controllers and Quadcopter Embedded control board
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