Uav Definition and 22 Threads

Salaam I was reading an article about Lancet UAVs. Somewhere in the article, it says: I wonder if EPR here refers to Electron Spin Reseonance or Engine Pressure Rate? Since the above-said Lancets don't have jet engines, I thought it latter could not have been intended here. Thanks in advance...

Hello, I'm working on a project controlling a UAV (quadcopter) I'm trying to understand non-linear PID controllers. I know that a linear PID is given by: and a non-linear PID the konstant terms are replaced with functions My question is: how to i find these function and tune the paremeters, i...

Hi guys We have a problem we we are building a flight controller for a drone, but fail to understand how to construct the position controller. It takes the x, y positions and the angle in between them which we call yaw. How to compute the angles roll and pitch for the desired x and y positions...

Homework Statement We're driving with a Uav of 80 km/h The duration Δt is 2 h 45 min On a rainy day, our Uav' is 65 km/h If the distance is the same, how much more is the duration of the drive? So, technically we want the result of Dt = Δt' - Δt Homework Equations Uav = Δx / Δt The Attempt at...

Hi everyone, I am currently working on a Coanda UAV and I am aware that there's no mathematical model to express the lifting effects of Coanda. It is more of a physical description of airflow movement. Correct me if I am wrong! Thus, I am using the generic expression of lift to describe the...

Hi Guys! I'm doing a conceptual performance calculation and analysis on co-axial rotor UAV helicopter on hover. However, I'm having conflicting results and if anyone can help me, it would be very great. The design constant of the helicopter are as follows: MTOW = 20 kg κ = 1.15 (Induced Power...

Please can anyone advise of a UAV community that offers a membership where i will receive discounts and newsletters? This is currently a hobby of mine and i don't mind paying fro the service. Thanks in advance.

Hey, I am embarking on a drive to the arctic circle. I have spent a bit of time googling looking for a kite to pull behind my truck to film the adventure and can't find much useful information. Is there anyone that could design or point me in the direction of a place to design a decent kite to...

Hi everyone, I am a High School student (final year) and am doing an extra-curricular project. Having complete autonomy on what we do the project on, I choose to design a High-Altitude Long-Endurance (HALE) UAV, such as the QinetiQ Zephyr [http://www.airforce-technology.com/projects/zephyr/] or...

Hi Physics Community, I'm working on the design of an aileron less and tail engine small UAV (Wing span 800mm) but I got stuck in Stability and Control. I recall from a teacher that a V-tail design is good for those configurations. However, I cannot find references to calculate/estimate neither...

I am building a uav drone for a high school competition and I have the arduino uno R3 board but other websites said I need the ardupilot board. Can I build it with the arduino uno and do you know the materials I would need for the mechanical and electrical aspects of the drone? And if you also...

Hey guys. I want to design a UAV that can do mission such as detection of powerline's hotspot. I've no idea what is the best sensors should i use for this mini-uav? I've been looking at FLIR, but it's so expensive. so i think i should create my own sensors or use a cheaper one. Any idea what ir...

Hello, I've designed a FLC controller for an UAV and I want to analyze its dynamic stability. In all "Flight dynamics and control" books I've read, the analysis is based on transfer functions of the aircraft (and exemplified on a specific aircraft like Cessna 172) and of the pilot (human or...

Hey guys, I'm currently doing conceptual performance analysis of a UAV helicopter in hover. I'm having some conflicting results however, and if anyone could help me out, that would be great. Here are some of the basic design constants I'm working with: GTOW: 95kg κ = 1.15 (induced power...

Autonomous UAV usually employ GPS systems for navigation purpose. However, the accuracy of GPS systems lie between 1 to 10 m. If the autonomous UAV has to be employed in applications where the positional accuracy should not exceed 0.5 m, what are the best navigation assisting options available...

I'm working on a VTOL UAV with some upper classmen and I'm wondering if the design so far will be able to lift off the ground, and how much power (battery power that is) it'll need to hover at about 10 feet for 20 minutes. My concern is with ground effects and the amount of raw power needed to...

Hi, I have a small project coming up, based around modeling (and perhaps building) a small Micro UAV system. Its a small device with contra-rotating blades (for stability), and I want to perhaps model the control system using simulink but I really don't know where to start! The aim is for the...

Hi, Anyone has had experience with UAV control/signal design can tell me what is the typical flight speed (surveillance UAV), control range, link speed and control delay like? (Sorry, I am not a very good engineering student, furthermore control and signal not my discipline... I can only...

hi, i am a mechanical engineer currently working on the design of a UAV. Our rough sketch kind of resembles Burt Rutan's Long-EZ or Velocity. I am attaching a couple of sketches of the aircraft which my team and i have constructed using XFLR 5. We will also be using XFLR 5 and Profili for...

Im trying to calculate the variable acceleration of UAV being recovered on a patrol boat. I have the inital velocity, the final velocity, the mass. In the long run i need this acceleration to calculate the recovery distance. I can iterate a time step for the recovery so time is also known. can...

Trying to get some background for a potential news article about engineering challenges for aircraft fluid (primarily fuel and avionics cooling) systems – focusing on contrasts between designing for UAVs vs. manned aircraft. Engineers I already talked with have mentioned: designing...

Launching a UAV... Hey guys... Can someone help me to come up with some ideas on how to launch a UAV... Is air pressure launching a better idea than bungee launch? The aircraft weighs around 15 pounds. Is there a better idea? If its pressure launched...woudnt it be air that's used...