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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42 views

What is the certification basis of tactical UAVs like MALE RPAS?

What is the certification basis of Medium Altitude Long Endurance Remotely Piloted Aircraft System (MALE RPAS) tactical UAVs? Is it based on CS-25?
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Why is the Eurodrone (MALE RPAS) equipped with turbo props in pusher configuration?

https://upload.wikimedia.org/wikipedia/commons/thumb/9/9c/EuroMALE_ILA_2018_%2801%29.jpg/1920px-EuroMALE_ILA_2018_%2801%29.jpg Why is the Eurodrone (Medium Altitude Long Endurance Remotely Piloted ...
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Is the FAA expected to issue more regulations soon on drone usage in rural areas?

There are exponential increases in funding for small drone startups. When is the next publication period for the FAA to issue regulations on use of small drones in suburban areas?
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Question on sUAS course in lieu of knowledge test for Part 61 certificate holders [duplicate]

If I am a PPL already, it appears that you can just take a course and pass a quiz to satisfy requirements for part 107 as such: "If you are a part 61 pilot certificate holder and you have a ...
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238 views

On the LAANC map for sUAS operations, why does the permitted ceiling drop to zero southeast of KGFL?

Above is a screenshot1 from the LAANC map for obtaining authorization to operate sUAS (model airplanes, "drones", etc), centered on KGFL, which is Floyd Bennett airport near Glens Falls NY. ...
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How do I keep the neighboring Remote Control Airfield from flying over my property?

I live in the North Georgia Mountains. The neighboring remote control airfield was put in front of my house where my mountain view is. I have no issue with them flying over their lease, just not over ...
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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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56 views

What classification of aerial vehicle would a manned quadcopter or octocopter be?

US here, if it makes a difference (w.r.t. FAA regulation, etc.). There's a new upcoming class of aerial vehicles, similar to drones, however they are gigantic and they are manned -- that is, manned (...
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Why would a turboprop be better than an internal combustion engine for a UAV?

Let us consider a UAV, long endurance high altitude (~26,000ft). Why would a user (most probably military) go for a turboprop rather than an internal combustion engine?
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Yaw rate of a multi-rotor

Is there any type of relation that limits yaw rate of a multi-rotor (i.e quadcopter)? Something like this relation for fixed wing aircraft: $R = \frac{v^2}{g \tan(b)}$, where $R$ is the minimum ...
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Is it possible to get permission to fly in the DCA “no drone” area?

The entire immediate Washington D.C. area is in a “no drone zone”, in a 15 mile radius from DCA. Are there ways to get an exemption for activities such as film making, property inspections, etc?
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Can I fly this six motor drone? [closed]

My body weight; 70kg, Drone weight; 50kg, Props length 0.7m, 6 motors (2hp each), Total weight 120kg, Total horsepower 12, Each motor runs 3000rpm, Please can I fly it. Thanks!!! drawing of the drone
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Is hybrid propulsion widely used by UAVs?

Is it common to have hybrid propulsion in UAVs used for terrain mapping with long endurance, short range and altitude? Is the technology and research mature enough to make hybrid propulsion? ...
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Can the lift equation be used for the Ingenuity Mars Helicopter?

I am currently working on a basic simulation of the Mars Helicopter Ingenuity, and I am having trouble interpreting the outputs I am receiving from the lift equation. The equation reads as follows: L =...
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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 ...
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Why aren't we using drone blimp/hybird airship for delivery? [duplicate]

Currently, the heaviest weight a commercial drone (the type that delivers Amazon package, not the type that delivers tons of stuff) can lift is 4.5kg with a 30-45 minute battery life. A drone blimp/...
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286 views

Single vs Twin motor for an electric RC airplane

I'm designing a fixed wing UAV for a project. I need an airplane that can fly for at least 200 minutes. Obviously, it means a big battery and thus a lot of added weight. I've been debating whether or ...
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How to use a set of Pressure Transducer to mimic pitot static tube for VTOL vertical airspeed indicator?

May i know if i have 3 pressure transducer, 1 facing upwards and the other downwards to measure the vertical velocity of a VTOL (Vertical Takeoff and Landing aircraft) and another 1 on the nose of the ...
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292 views

How should a private pilot renew their part 107 certificate?

I got a Part 107 (Commercial Drone) Certificate by passing the test more than two years ago, so it's expired now. I just became a private pilot, and I know that private pilots can get a Part 107 ...
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342 views

Can drones/UAVs fly over international waters without being subject to the FAA's regulations?

Can UAVs or drones (consumer/commercial scale) operate over international waters (12 miles out from the shore) without being regulated by the FAA? Just wondering if companies can do things like ...
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For electric aircraft, is MTOW = Empty weight + Maximum payload?

Electric aircrafts and most drones have simple powertrains, and their weight does not vary along the flight. After reviewing this thread I assume that: MTOW = Empty weight (batteries incl) + max ...
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What is the general trend of payload fraction for an RC propeller plane?

What is the general trend of payload vs total weight for a radio controlled propeller aircraft? I am simply using this formula: $$Wo = \frac{Wpayload}{(1-((We/Wo)+(Wp/Wo)))}$$ I could get We/Wo (...
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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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Why does Google's Wing drone have dimples?

The question What operational aspects of Alphabet's Wing drone delivery service will be the same as that of an airline? includes a cropped photo of a google drone from FAA Certifies Google's Wing ...
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How does a remote pilot land a fixed-wing UAV?

How does a remote pilot land a big fixed wing UAV, whose takeoff weight could be several tons and have to land at a airport with runways? I saw in the TV, these big UAV normally has on-board cameras ...
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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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225 views

What indication has the FAA given that phrases like “surface area of Class E airspace designated for an airport” do or don't include E4 “extensions”?

This question pertains to the airspace of the USA. The dashed magenta shape on the sectional chart around KGUP depicts the horizontal extent of the Class-E-to-surface at KGUP. Inside this perimeter, ...
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Why do most commercial solid-state Inertial Measurement Units (IMUs) measure angular rate and not angular acceleration?

The vast majority of MEMS-based IMUs are formed by an accelerometer and a gyroscope, providing linear acceleration and angular rate measurements respectively. However, having available the angular ...
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1answer
209 views

How to calculate the number of blades?

Inspired by building a new drone, I got lost in curiosity. What if I have a fixed length of rotor blades and a target amount of lift I want to, well, lift. How do you calculate the number of blades? ...
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What are some alternate methods of communication with aircraft (specifically small drones)?

I've been thinking about his alot but I've yet to find an answer. Most of the time drones use radio, wi-fi, GPS and Bluetooth signals to communicate with their controllers but all of these methods ...
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259 views

Why do UCAV/UAV designs mostly use lambda wings instead of pure delta wings?

Why do recent UCAV/UAV designs mostly use lambda wings (such as Taranis and Dassault nEUROn) instead of pure delta/diamond wings (such as X-47A Pegasus and Lockheed D-21)? As for stealth ...
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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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133 views

Solutions to improve the aerodynamic behavior of a UAV

So I'm working at a project of a UAV with the follow characteristics: Rectangular planform Conventional tail The fuselage is just a metal/aluminum rod So we need to improve its aerodynamic behavior/...
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191 views

How to calculate aerodynamic efficiency at minimum power conditions?

The drag polar of a propeller driven aircraft is $C_{D}=0.039+0.071 C_L^2$. The lift curve slope of the wing ($C_{L_\alpha}$) is 0.09/deg and zero lift angle ($\alpha_{L=0})= -1.5^o$. Stall angle of ...
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Would using a drone to pay for something count as commercial use?

If I were a drone hobbyist, and I flew a drone over to someone to give them money in exchange for something, would that count as commercial use and therefore be illegal? Here’s an example scenario: I’...
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What kind of drone might be able to fly so high that it “operate(s) outside national boundaries”?

In the question What is a propellant burner trailer? I mention that CNN and NPR have pointed out that the US president recently tweeted a surveillance photo of an explosion of a rocket on a launch ...
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Are there any plans to make the QF-16 into a drone for actual combat missions, or a fully autonomous fighter?

It appears to a naive layman like myself that the QF-16 is an excellent platform to use for remote controlled missions akin to that of other drones. Except that the F-16 appears to have a broader ...
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Do airplanes or helicopters ever fly at night using only white navigation lights?

I've been trying to figure out if airplanes or helicopters ever fly at night with only white Nav Lights. See this UAV video taken on July 12, 2015, 05:38 AM Pacific time in San Francisco, CA, USA.
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How do you communicate with a military drone operator over radio?

This article (and other similar ones) states: In remarks at the White House on Thursday, US President Donald Trump said the drone had flown to within 1,000 metres of the USS Boxer and had ignored "...
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What's the minimum number of sensors for a hobby GPS waypoint-following UAV?

I would like to develop my own guidance, navigation and control (GN&C) flight software on a Raspberry Pi, for a small hobby fixed-wing UAV. From a physical standpoint, what is the minimum set of ...
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Cross a barrier with a drone [closed]

How fast does a multi-copter drone need to fly in order to freefall on the other side of a highway if: Drone weight - 15kg, 20kg Highway width - 70 ft altitude above ground - 200 ft, 300 ft, not ...
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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 ...
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where can i get a aviation map of korea with the moes, and highways and vectors [closed]

ive been searching for a aviation map of South Korea and cant find anyone that sells it. does anyone know where I can find one for flight planning
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At what altitude does a wing become useless? [duplicate]

At what speed or altitude does an aircraft become more efficient as a rocket then a plane using thrust vectoring instead of the wings to steer? At what altitude did the flight control surfaces of the ...
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As a drone hobbyist, is flying below the listed FAA UAS ceiling a violation of controlled airspace?

FAA (emphasis mine): In Class B, Class C, or Class D airspace [controlled airspace] or within the lateral boundaries of the surface area of Class E airspace designated for an airport, the ...
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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 ...
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Would this be a dangerous impeller to use for a drone?

I am considering using a 3D printer to make unconventional impellers for a custom-made drone that I am planning to build. I am concerned that these plastic impellers may explode if their motors' RPMs ...
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3answers
215 views

How can air launched UAV's be decelerated?

I am working on disaster relief drones for a college project. I was thinking about having multiple set of drones launched from an aerial vehicle over the disaster prone area. That's when I came across ...
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1answer
239 views

What are all the US airports where E4 “extensions” change to E2 and become part of a larger E2 “surface area” when the tower closes for the night?

Of all the US airports with part-time control towers and with E4 "extensions", in which cases are the airspace definitions written so that the E4 "extensions" change to E2 and become part of a larger ...
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118 views

What's the smallest 3-blade propeller for this motor? [closed]

I've got a 15470 brushless 35kw motor from China How do I find the smallest 3-blade propeller I can use for this motor? Here are it's specs, Max Power: 35KW Max Amp: 400A Max RPM: 8500 Max Volt: 120v ...

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