Numerical modeling using ANSYS Fluent
Budget: $30 – $250 USD
Using the specifications and constraints shown in the drawings (next page), design and simulate both fixed wing and rotary wing drone. For the fixed wing drone, maneuverability is controlled using the ailerons and elevators, not the EDF fans, even though the motions can be achieved by adjusting the thrust forces on the EDF fans. In order word, both EDF fans must produce the same amount of thrust. Normally, elevators are used for pitching control. However, it can be done with the combination of ailerons. Only non-accelerating condition is analyzed, where the drone is cruising at constant speed. Make sure that all simulated airspeeds produce sufficient lift force to support the weight of the drone and the thrust force is able to overcome the drag encountered. For the rotary wing drone, pitch and roll motions are controlled purely by the main rotor. The tail rotor is responsible to counterbalance the reaction torque on the main rotor as well as controlling the yaw motion. By adjusting the angle of attack of a particular rotor blade, the lift force on the rotor can be varied, which results the tilting of the drone depending on the direction of the force applied. Normally, the attack angles of the rotors are synchronized by connecting to a swashplate for cyclic control. If the attack angles of all rotors are identical, it is called the collective pitch. Mechanism of the swashplate and the internal structure of EDF are not required for the simulation. After completing the design and simulations, address the following questions.
1- Consider a fixed wing drone moving at constant speed, ܷ. Find, ܷ, for your design. All control surfaces
(ailerons, elevators, and etc.) must be flush with the wing. Specify the mass flow rate of air through the EDF to
reach the design speed, ܷ.
2-Using the operating conditions in part (a), adjust the ailerons and elevators to achieve turning, ascending and
descending motions. Determine the rate of ascending and descending as well as the turning radius.
3-Varies the mass flow rate of the EDF and calculate the corresponding velocity of the drone or airspeed so that all
forces are in balance. Find at least three more sets apart from the speed used in part (a).
4-Consider a stationary rotary wing drone hovering in the air. The rotor of the rotary wing is spinning at constant
angular velocity, Ω. Find, Ω, for your design. Specify the attack angle of the rotor blade
5-Using the operating conditions in part (d), adjust the attack angle of the rotor blades to achieve forward,
backward, and sideways motions. Determine the velocity of each motion.
**Apart from the above questions, you are required to perform general procedures such as design modeling, apply adequate meshing, setup the numerical model and boundary conditions, run numerical calculations, validation the data from the literatures, present and defend your work during the viva, and write and submit your assignment report. You can refer to the following drawings for further details of design constraints.
THE DRAWING FILES ALREADY DONE
1- Consider a fixed wing drone moving at constant speed, ܷ. Find, ܷ, for your design. All control surfaces
(ailerons, elevators, and etc.) must be flush with the wing. Specify the mass flow rate of air through the EDF to
reach the design speed, ܷ.
2-Using the operating conditions in part (a), adjust the ailerons and elevators to achieve turning, ascending and
descending motions. Determine the rate of ascending and descending as well as the turning radius.
3-Varies the mass flow rate of the EDF and calculate the corresponding velocity of the drone or airspeed so that all
forces are in balance. Find at least three more sets apart from the speed used in part (a).
4-Consider a stationary rotary wing drone hovering in the air. The rotor of the rotary wing is spinning at constant
angular velocity, Ω. Find, Ω, for your design. Specify the attack angle of the rotor blade
5-Using the operating conditions in part (d), adjust the attack angle of the rotor blades to achieve forward,
backward, and sideways motions. Determine the velocity of each motion.
**Apart from the above questions, you are required to perform general procedures such as design modeling, apply adequate meshing, setup the numerical model and boundary conditions, run numerical calculations, validation the data from the literatures, present and defend your work during the viva, and write and submit your assignment report. You can refer to the following drawings for further details of design constraints.
THE DRAWING FILES ALREADY DONE