Drone Definition and 53 Threads

Last night, a suspected Russian one-way drone with an explosive warhead impacted the New Safe Confinement shelter over the ruins of Chernobyl’s #4 reactor. The explosion caused damage to at least the outer shell, with an unclear amount of damage to the interior of the facility. Officials...

[Mod note: This thread was originally posted in the moderator's forum, but has been moved to the main forum due to its potential value for the community. It started mainly humorous, but we've added serious content to make this a teachable moment.] As I think most of you probably know New...

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...

my answer = F = 1.6*9.81 - 1.2*9.81 = 3.924 N -> resultant force of the drone moving (weight minus the upward force) M= 1.2kg , mass of drone a= 3.31 m/s^2 , acceleration of drone u=0 m/s , initial speed of drone t=1s , time v = 3.27 m/s, final speed of drone and its not even in the options... 😶

I was wondering how fast you would need to spin a drone propeller to lift x amount of force and mostly how the rpm of the propeller affects the force of the airflow it releases. I’m incredibly new to physics in general and you can take everything I say with a grain of salt. I have no actual...

How much energy will drone batteries will consume if I have the following inputs, By using provided GPS flight path data I've calculated total horizontal distance using Haversine formula, and multiplying this distance with provided horizantal speed I've total horizontal flying time. By...

It may be old news but it still kinda sends a chill down my spine.During the "recent" 2020 war in Nargorno-Karabakh appearently the UN claims that an STM Kargu autonomous kamikaze drone loaded with explosives detected and attacked Haftar's forces in Libya with its artificial intelligence without...

Following is a frame carefully chosen from this drone footage. At about 0:29 into the video the drone is directly in front of one of the four faces (if you know Cairo, you will know which one) and moving from left to right. At that point I have paused and 'frame-stepped' till the moment before...

https://www.saildrone.com/press-release/ocean-drone-captures-video-inside-category-4-hurricane The Saildrone Explorer SD 1045 was directed into the midst of Hurricane Sam, which is currently on a path that fortunately will miss the US East Coast. SD 1045 is battling 50-foot waves and winds of...

This is really cool, IMO. They now can use drones launched off of aircraft carriers to do mid-air refueling of aircraft. The video shows a land-based launch and recovery of the drone, although it looks like the landing was arrested by a regular aircraft carrier cable...

I am looking for any information on how to build my first drone. I spent 7 days gathering information, selected components I though would work together, but after that I was criticised by people who said that those components would not match. Here is my post from reddit for example. I...

https://techcrunch.com/2020/12/03/space-startup-aevum-debuts-worlds-first-fully-autonomous-orbital-rocket-launching-drone/ The Ravn X launch vehicle is 80 feet long and has a 60-foot wingspan, with a total max weight of 55,000 lbs including payload. Seventy percent of the system is fully...

Hi, I am building a drone for a school project and I am also looking into how it flies. Recently I have been looking into angular momentum, torque, moment of inertia and angular acceleration. However I am struggling to understand moment of inertia and angular acceleration. If possible please...

Hi there, I am building a drone for a school project and I am looking at physics behind how it flies. I stumbled upon Bernoulli's principle and the Coanda effect but I am struggling to find out how it can apply to the rotors of a drone. I understand the primary aspect of as the fluid's speed...

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...

Now this may be quite an odd request but would it be possible for any of you to give me an insight into drone/quadcopter flight. I am building a drone for my school project and I am also focusing on the flight of it. I have found papers on drone flight however I am struggling to come up with any...

I have been researching the rocket pendulum fallacy and have gotten into some spirited debate on the subject. If I understand correctly... 1. if the thrust is perfectly in line with the centerline (and no outside forces act on the craft other than gravity) it does not matter where the source...

I have drone motor with propellers attached to the top of ring flywheels rim at the edge and the flywheel is 18 inches in diameter and weigh's 2kg. The drone motor with propellers rpm 5200 and thrust 900 grams. What rpm will the flywheel be rotating at.

Hello all, as my final project to attain my bachelors, I have tasked myself with designing some sort of device to collect insects from the canopy of soybean plants that can be suspended under a UAS (quad copter/drone). What I am trying to do is essentially build some sort suction device. The...

Is it feasible to design and development Smartphones apps which will access,control & monitor quadcopter Drones operating at 2.4 GHz & 9.8 GHz wireless frequencies? Thanks & Regards, Prashant S Akerkar

Hi, I am currently constructing a personal project, and I was wondering if anybody knew any thin material that was relatively light weight, cheap, and as strong as wood. I understand that carbon fiber exists, but this material is rather expensive. If anyone knows alternatives to using wood or...

I was flying my drone last week and then it hit me. What happens to the drone if you put it in hover mode in a moving car? It must be a closed roof car and can move at any speed. But what my question is, what will happen to the drone? In hover mode, a drone will just float where it is. But if...

We need to get humans out of the loop. Amazing how rugged they are after long falls.

I wonder what is the best figures for blades/prepellers - assuming I am trying to optimize battery life and my main usage for the drone is hoovering. I can not play with the arm length. I do consider 4 blades over 2 blades at the same propeller - not sure if it will help. Any feedback or idea is...

Hey, everyone, I have a question regarding quadcopters, when the set of the arms is of configuration X, to roll we increase the velocity of the two motors on the left/right and decrease the other motors on right/left, the question is when doing so the total angular velocity is zero that means...

A company named Drone Shield has developed a 'Drone Gun', which is capable of jamming a drone from up to 1.2 miles (approx. 2 km) away...

I have a project and in that project I'll count the wild life animals from a drone. I need to find a drone that doesn't make much sound also (maximum 60-70 dB), it must capable of a flight time 30 min and also can carry a IR camera. I find a drone callled Phantom 4 (Advanced or Pro)...

https://www.amazon.com/dp/B0111O7VIC/?tag=pfamazon01-20 I tried my nephew mini-drone inside my room and it's quite interesting.. it can hover in mid air and you can really navigate it. Some questions. 1. Sometimes there are flying cockroaches in my room. Can the minidrones propellers kill them...

Hello, I'm playing around with simulating drones (quadcopters) in Gazebo (an open source robotics simulator). The control system is made up of six PIDs (one for each degree of freedom) and I'm encountering trouble tuning the pids for pitch / roll control. In this case, the linear x / y and...

please refer some live feed drone camera with infrared and night vision and good picture clarity in minimum price . thank you

Hey, I'm working on a project to build a drone which is powered through air jets. The drone needs a valve control system which can control the flow rate (hence the thrust) going to each nozzle in order to adjust it's altitude and stabilty. I need to set up a circuit which can electronically...

I am planning to make a drone in near time. I have absolutely zero pre-requisite knowledge of the technical stuff and drone designs. I am going to start with a basic drone. Can somebody help me out as to how many types of drones are there, where should I commence etc?

Hi. Most modern camera quadcopters (drones) have a "follow" function, allowing them to follow and film a person. The DJI Phantom 4 does this by optical tracking, most other brands require that the person carry a smartphone or other wearable. How does this work? I assume the smartphone or...

Hello, I am trying to find out if there are any differences between how the Electric engine for car works vs how an Electric Engine for Drone works. I am sure the both consist of an Ignition coil, stator and rotor. However I have not been able to find the any schematics for a drones electric...

Hey guys its Saturday and the beer has been on menu. So the topic was " drones using magnet" and little magnets would be placed on propellers and thus they would circulate. Power generated from that could be used in micro controllers to control the movement of drone. Can someone tell me how to...

I saw this on Yahoo news earlier today. http://news.yahoo.com/belgian-drone-mixes-plane-quadcopter-technology-120407999.html?bcmt=1453122222785-ab7269f0-75d2-46ff-a4ad-24a433f07605&bcmt_s=u#mediacommentsugc_container From the article: The article is sadly lacking any photos of the drone, but a...

Hello, I'm a journalist interested in using an air-quality sensor on a drone, and I'm wondering how the airflow will affect the readings. This would be assuming that I will use a DJ Phantom 2 quadcopter with a GoPro underneath, the drone specs can be found at this link. For the project, we...

Setting info - take it as granted. Strategy - treat it as an open issue, if you see an alternative solution, please suggest it. Setting - natural conditions Planet to defend - Earthlike, tidal locked around red dwarf, water world, cold, 3 atm Main weakness point - gates - that allow...

Hello, I want to have a quadcopter drone type set up which can tell how far from land it is. I would go for GPS but I want it to take into consideration the tide, and in general I'm only talking a distance of 50-200m (within shore fishing distance). The ideal system would be a drone that can...

I would like to know how does the general equation about propellers thrust look like. How should I calculate the force to be big enough for a lift off? The object (a drone) is located in a spacecraft , which means the gravitational force is 0. Are there more variables that I should concern...

Hello everyone ! Its very first post here & with the go i want to know about basic reasons behind the liftup of quadcopters or drone going popular these days. Is it the propeller designing motor weight & speed battery power etc ...

Like the Secret Service needs another headache. :oldeyes: http://news.yahoo.com/spokesman-secret-recovers-device-white-house-095128139.html

I have read a discussion about a centrifugal fan on a wheel system The fan pulled air to itself and push the air outward from center. Most flying machines that I aware of push air down, as Newton describes. Since air is move downward, but toward machine could a new drone work this way...

Recently, Facebook suggested solar powered drones could be used to provide internet coverage in remote areas and they would basically act as low altitude 'geostationary' satellites. The current duration record for a solar drone is 2 weeks using energy stored in batteries during the day, to keep...

On the CBS "60 Minutes" program tonight, Amazon CEO Jeff Bezos showed reporter Charlie Rose a prototype of their "Octocopter" drone which is intended to deliver packages directly from a fulfillment center to a customer's doorstep: Amazon unveils futuristic plan: Delivery by drone This service...

Here is a problem I've been trying to sort out and I can't get, I think it's kind of an interesting one. Imagine a drone and a target point on a 2d plane. There are eight parameters: P = my position Q = target's position V = my velocity I = my moment of inertia w = my angular velocity s...

From a report four month ago: Confirmed Terrorist casualties 1/50 = 2% Child casualties: 176/3325 = 5% Of course, this counting method doesn't use Obama's convenient method of "all military aged males in the region". I wonder how much this contributes to their recruitment rate...

I've been having this urge to create my own flying robot, quadrotor or something similar with motors and rotating blades, I've thought up how it would fly, turn, and be powered. Still some problems like, I wanted to connect a camera to it, but how do I transmit video over distance, is the...

http://www.foxnews.com/politics/2011/12/05/us-military-sources-iran-has-missing-us-drone/ Foxnews reported that Iran captured a US drone. I'm not sure how much benefit the Iranians can get from a drone. They might be able to download its firmware/software; I doubt they could understand the...