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Calculating the Lift to Drag Ratio of a Fixed Wing Drone

Abul Kalam Khanby
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The Lift to Drag (L/D) ratio is a key performance indicator for fixed wing drones. It is a measure of how efficiently a drone can convert engine power into lift and forward motion. Calculating the L/D ratio of a fixed wing drone can be a complex task, but with the help of simulation software like ANSYS Fluent, it can be made much easier. In this article, we will show you how to use ANSYS Fluent to calculate the L/D ratio of a fixed wing drone.

Step 1: Set up the simulation environment The first step in using ANSYS Fluent to calculate the L/D ratio is to set up the simulation environment. You will need to import the geometry of your fixed wing drone into ANSYS Fluent and specify the fluid properties, such as air density and viscosity. You will also need to specify the simulation conditions, such as the velocity of the fluid and the altitude of the drone.

Step 2: Define the boundary conditions Once the simulation environment is set up, you need to define the boundary conditions for your fixed wing drone. This includes specifying the inlet and outlet boundaries, as well as the wall boundary conditions. You will also need to specify the turbulence model that you want to use in the simulation.

Step 3: Solve the simulation Once the simulation environment and boundary conditions are defined, you can solve the simulation in ANSYS Fluent. This will calculate the lift and drag forces on the fixed wing drone, as well as other performance metrics such as the velocity and pressure fields.

Step 4: Calculate the L/D ratio Once the simulation is solved, you can use the calculated lift and drag forces to calculate the L/D ratio. The formula for the L/D ratio is L/D = Lift/Drag. The higher the L/D ratio, the more efficiently the drone is converting engine power into lift and forward motion.

In conclusion, using ANSYS Fluent to calculate the L/D ratio of a fixed wing drone is a powerful tool for optimizing drone performance. By simulating the fluid dynamics of the drone in flight, you can accurately predict the lift and drag forces and calculate the L/D ratio. With this information, you can make informed decisions about the design and configuration of your drone, leading to improved performance and efficiency.

Published by Abul Kalam Khan

He is an Author, Inventor, UAS Engineer, Blogger//Speaker and Entrepreneur. He has completed Aircraft Maintenance Engineering (AME). After the completion of the course, He shifted to Manila Aviation, Philippines to obtain the experience of Bell 407 Helicopter and Super King Air B200 aircraft. Also, accomplished accreditations in Human Factors, Aircraft Systems, Jet Engines, and Airframe, identified with wide-body aircraft, such as A320, A340, and B737. Later on, He joined a privately held UAV Company as a UAV Technical Engineer, where, during the exploration of Unmanned Aerial Vehicles, He transmuted his ‘Manned Aircraft’ knowledge into ‘Unmanned Aircraft’ and designed ‘India’s first Drone crash course study material’. Aside from Technical work, coordinated numerous workshops and training sessions to train the Engineering students regarding the Unmanned Aviation field as well as participated in the HALE/MALE sorts UAVs venture. Presently, He is working as a Director in a private UAV Manufacturing company (VAU Technovations LTD.). His recently formed UAV include VTOL UAV with Virtual Pilot and inventions comprise ‘Blended wing body flapless VTOL UAV, controlling with bleed air motion control system’ and more. As well as he authored a book, which comprises a detailed description related to all elements of the Unmanned Aircraft System. “Since, beginning He was very much interested in to produce something new, which never been done before to change the reality. The way, which drives this sort of deduction falls under the enterprising space, where somebody controls the entire Universal laws to reimage it by his own specific manner to make outlandishly conceivable.” By keeping an innovator mindset, after the completion of the course, He joined India based Start-Up company in the Drone sector. Where he got the undertaking to design ‘UAV Courses’ and the ‘Fledged Unmanned Device’ without any assistance. It becomes very hard to work, out of your prepared space. ‘Reimagination factor’ empowered him to plan ‘Practical UAV Courses’ as well as ‘Fledged Unmanned Device’ identified with numerous applications. During the working session, organized many training sessions and Signed MOUs with different colleges to train the engineering students in his own defined way. After that joined a couple of Start-Up companies (INDIA/South Africa) in a similar area as a Pioneer to deliver them ‘Initial Stage Boosting Strategies’ to cause them to survive in the market with limited resources. Parallelly, continues to contribute his own opportunity to tackle the genuine issues, which addressed by customers. Presently, working on, to be a Global competitor in the DRONE sector by manufacturing a completely indigenous Advanced Unmanned Aircraft System with Uniquely planned calculations. Awarded by many Engineering colleges for his work in DRONE Training Domain. In 2017, ‘Entrepreneur Magazine’ printed about his Business effort in DRONE Sector. In 2018, Nominated for ‘Visakhapatnam Manufacturing Leadership Award’. His invention sheaf comprises, ‘Blended Wing Body Flapless VTOL UAV, controlling with Bleed Air Motion Control System’, to solve out the Endurance related problem with the capability of carrying both Low-speed and High-speed operations at maximum stealth mode. ‘Unmanned Aircraft System for Under Bridge Bearings Inspection’ to solve out the inspection related problem of ‘Under Bridge Bearings’, The problem was addressed by one of the construction company. An extendable robotic arm with a camera is attached with the HUB of the air vehicle, which eases the ‘Bearings’ related inspections inside the ‘confined spaces’. ‘AI DRONE with Virtual Pilot’, Virtual pilot concept makes the controlling and troubleshooting of the air-vehicle easy. The purpose for to concoct the ‘Virtual Pilot’ is to ease the controlling and troubleshooting of the air-vehicle for the Non-Engineer operator. And the invention related to the defense sector comprises, ‘Lightning Strike System’, A MALE/HALE UAV payload system that channelizes the ionized plasma through MV channels to neutralize the targets. Additionally, Related to the Agriculture sector, the commercially launched ‘AGRORECK’ series ‘Pesticide spraying’ and ‘Multi-spectral imaging DRONES’ to solve the AGRO-related problems.

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