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Questions tagged [unmanned-aerial-vehicle]

An unmanned aerial vehicle (UAV), commonly known as a drone, is an aircraft without a human pilot on board. Its flight is controlled either autonomously by computers in the vehicle or under the remote control of a pilot on the ground or in another vehicle.

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How long does it take the Predator UAV to reach cruise altitude?

For applications such as UAVs, especially military ones like the Predators and Reapers, do the same regulations as light aircraft apply due to their structure? Or, does the absence of a human operator ...
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Drone regulations - understanding how to figure out

I'll preface my question by mentioning that, while this might not be the strictly on-topic, I think this community is the best that can explain the flight zones and the flight regulations. I own a ...
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Statistically, what are the failure points on sUAS (drone) aircraft?

It is generally recognized that operator error and unairworthy aircraft are the principle factor in sUAS (drone) system failures and accidents. But looking just at the hardware, are there published ...
mongo's user avatar
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Unmanned aerial vehicles communication link: frequency/spectrum?

I am studying airborne platform: HAP - high altitude platform LAP- low altitude platform UAV - unmanned aerial vehicle ITU gives frequency allocation bands for link between ground and HAP/LAP/UAV, ...
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Definition of Critical Part in type certification process

first time here :) I'm part of the team at Flytrex (flytrex.com) and we're working with the Aircraft Certification Office to certify one of the first UAS systems (drones) under new initiative to ...
Amit Regev's user avatar
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What is the take off and landing performance of the MQ-9?

At maximum takeoff weight (listed on wikipedia as 10,494 lb (4,760 kg), 11,700 pounds (5,300 kg) with upgraded landing gear), what is the minimum runway distance required (not including safety margin) ...
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Estimate the drag caused by wind on a free falling body

I'm trying to solve the following problem for my masters thesis: Estimate the drag caused by wind on a free falling body from H altitude. H is in range of 300-1000 meters. What would be the best way ...
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Could an air-breathing electric propulsion (ABEP) or other form of ion propelled aircraft fly on Mars?

I'm currently in a class for aircraft propulsion and I became interested in Ion propulsion. It seems there hasn't been many developments for a few years as far as viable aircraft utilizing the ...
thewanderingsophist's user avatar
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Which type of wing would be a better option for fixed-wing UAV? Mid or low?

In the context of VTOL hybrid Fixed-wing tiltrotor UAV, for the operation that would require low weight and more maneuverability for agricultural crop surveying, which option would be a good choice, ...
Tejas Raysad's user avatar
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What regulations govern UAV lights in Australia?

I'm a member of a student aviation club at my university, and we're working on a UAV. The club member working on our drone's power supply system has designed a system that uses externally-visible LED ...
nick012000's user avatar
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Can a quadcopter fly stable while its all 4 motors from different manufacturers?

What if we used 4 motors which all are from different manufacturers? Will it fly/hover ? All 4 brushless motors have same kv and dimensions. Like 2204 2300kv .
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What is the current regulatory progress regarding autonomous aircraft carrying passengers?

Are there any lobbying groups working towards this? Has there been any word whatsoever from the FAA on this topic yet?
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Are there any operational, combat capable multicopter drones (as of 2019)?

Are there any small operational military drones with any form of weapons system on board, as of 2019? I'm basically referring to a more powerful, more sophisticated and refined version of something ...
AlphaCentauri's user avatar
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Are there any aviation vehicles for Internet service?

Facebook announced on Wednesday (2018.06.27) that it is ending its Aquila drone program after four years of development. Aquila was a high-altitude platform station (HAPS) system designed to deliver ...
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Has the United States started a drone crop spraying program for farmers?

On "NHK World" (2018.06.01), a news segment showed Chinese farmers being taught to use drones to spray chemicals on their crops. The Chinese Government hopes to train all the farmers in an entire ...
jwzumwalt's user avatar
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Picking a NACA airfoil for a new propeller on a DJI drone?

The idea is to design a fairly simple propeller using Fusion software program that has a CONSTANT airfoil throughout (but that twists or changes in scale as it spans). I want a large coefficient of ...
dreddlord's user avatar
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Deriving Accurate Exit air velocity of rotor

My goal is to derive the equation for exit air velocity as a function of: Pitch angle RPM Rotor Radius Constants like ρ Assumptions: Vc is relative velocity of air upstream, and is = 0 Inflow is ...
Luke-McDevitt's user avatar
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How to find the equations used in an N2 diagram?

I am currently pursuing my research internship whose aim is to validate the airframe design estimation by FastUAV, an optimization framework (written in OpenMDAO) specifically tailored to unmanned ...
Miriam Scarano's user avatar
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What FAA or other regulations apply to autonomous quadcopters?

I am a software engineer and hobby roboticist and I have just successfully built a quadcopter drone with a full-fledged microcontroller (running firmware that I wrote myself) inside of it, that flies ...
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Calculating Lift of a closed-wing drone

A group of students and I are designing a theoretical closed-wing drone and need to calculate lift based on the NASA lift equation. We've designed fixed-wing aircraft before and when it came to ...
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VTOL Propeller Sizing and Executing a transition from VTOL to Forward Flight mission profile

Hi I am an engineering student, currently in the process of designing a compound UAV drone capable of both vertical and forward flight. I've made significant progress, having completed initial gross ...
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What happened to the SkyTote UAV?

The SkyTote UAV is a tail sitter VTOL UAV, which looks like the Convair XFY-1 Pogo (without the delta wing). I want to know whether this design ever transitioned successfully from hover to cruise mode....
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Is there a classification/group for UAVs with certain specs?

Is there a classification (like a name for UAVs that have max cruise velocity of 350km/hr) for UAVs please? So based on specs like range, velocity and altitude for example? Thanks, any resources with ...
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