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 do AeroVironment's Switchblades steer their flight?
I've recently been to a defense expo and saw a previewed Switchblade 300 at the AeroVironment booth. It got me questioning how the Swtichblade, and similar fold-out drones steer their flight. The ...
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I am not sure what topic to choose for thesis [closed]
I feel like I will be met like a weird dude, but please, share your thoughts about those thesis topics.
I need to choose one of them as a graduational project thesis, but I am not sure what I should ...
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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 ...
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With existing tech and knowledge of meteorology, can aircraft be designed to reliably improve their range or loiter using updrafts to gain altitude?
Just what the question says. I want to know if aircrafts' range, loiter time, or other measures of merit can be dramatically and reliably increased using our current understanding of meteorology and ...
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Finding longitude/latitude of a aircraft
I have been scratching my head for a long time on this one so any help is apperciated. How would I find longitude and latitude points of a UAV given this:
True Airspeed
Roll rate, pitch rate, and yaw ...
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How to calculate the amount of differential cable delay between a four port directional antenna and a single port Omni directional antenna in TCAS II?
I want to select the amount of differential cable delay between the top (4-port directional) antenna and the bottom (1-port Omni-directional) antenna in the TCAS II RBP-7G connector pin.
In the ACSS ...
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How to calculate the Traffic Advisory (TA) range limit above the maximum altitude limit (take 16000 ft) of an aircraft?
Let us consider an aircraft(A) with 16000 ft maximum altitude limit. Above which it cannot achieve 0.25 G vertical acceleration with 1500 FPM. Now, my question is if there is an aircraft(B) flying in ...
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Telling an unmanned aircraft from its flight path
I'm not a hardcore fan of aircraft - I just like to know what is flying overhead and why...
Some days I hear this loud annoying droning sound coming from the sky - it's usually a military unmanned ...
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What are the key differentiating factors between the flight control systems employed in unmanned drones and those utilized in piloted aerial vehicles?
"I've come across open-source projects like ArduPilot that are commonly used with microcontrollers like Pixhawk for unmanned aircraft. However, I'm unsure whether these systems can be adapted for ...
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Are there equations to match power required to mass for rotorcraft?
Is there an equation (or table or whatever) to determine what power is required to fly certain mass? Probably there will be a bunch of nuances, but at least some sort of rule of thumb probably exists.
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Has putting car tires over wings ever been used to protect the aircraft from airborne attack?
Recently Ukrainian bloggers have published videos, where Russians have placed the car tires on the wings of they parked strategic bombers (Tu-95), most likely to provide some protection against drones ...
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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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What would the effect be of flap deployment on a UAV such as the Reaper or Predator?
I've read answers that said that the climb performance is usually worse with flaps extended, and the pilots would, if they could, just retract them and get into a clean config as soon as possible. ...
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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 ...
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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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Why was US-made Reaper drone downed but not Byraktar TB2?
Russian Su-27s used fuel dumping techniques on US-made MQ-9 Reaper (YouTube) and Turkish Byraktar TB2 (YouTube).
MQ-9 Reaper plunged into the Black Sea, but TB2 didn't.
Why was that?
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Why is there no video of the drone propellor strike by Russia
I've seen lots of videos of the Russian aircraft flying near the US drone, but I've yet to see a video of the reported collision with the drone's propellor. Is there no video of the strike? If not, ...
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Why would a fighter drop fuel into a drone? [closed]
According to the BBC:
A feed from a camera fitted under the fuselage of the surveillance drone shows a Russian SU-27 making two extremely close passes while releasing, what appears to be, fuel as it ...
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Would I need a drone license if the drone is flown by ai and not a remote?
I heard of some AI flown UAV's and was wondering. if I made my own AI flown drone/plane would I need a drone license? (Assuming I would use it for commercial purposes and not just for fun).
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Why does the V-Bat not counter-rotate?
V-Bat is a VTOL aircraft built by a company called Martin UAV.
It seems to have a single pusher propeller. But then why does it not counter-rotate to balance the rotation of the propeller?
Any clear ...
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Payload capacity of a quadcopter/helicopter with increasing altitude
I am trying to create a simplified model of a heavy-lift drone payload at different altitude during hover mode. I tried to derive it simply by considering that the thrust, $T$ is equal to the weight ...
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Why does the P-175 polecat have two separate air intakes instead of 1 like most other UAVs?
I understand that the P-175 polecat has two engines which normally would mean one air intake for each engine, however other aircraft have used 1 air intake structure for two separate engines such as ...
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Expected behaviour in Linkloss scenarios - UAVs
Imagine a remoted piloted aircraft like MQ-9 being controlled by pilot on the ground.
I was wondering what is the expected behaviour of the aircraft when the connection with the pilot is lost?
Does ...
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Does a non-current private pilot need to renew his license to obtain a Part 107 (Remote Pilot) certification?
I am a non current private pilot (haven't flown for about 15 years) that need a 107 license for work to fly DJI drones.
my employer is not going to pay around $1,000 to get me current again (it's been ...
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What are this sensor especially those at tips?
This is an image of an RQ-7 B UAV what are those sensors marked in red circles.
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How is pitch changed and lift generated in QNET VTOL (Vertical Take off & Landing)?
I am confused how QNET VTOL (Vertical Take off & Landing) works, especially how pitch is changed and lift is generated.
I share a link of a relevant YouTube video and I am also sharing snaps of ...
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What is the largest aircraft ever successfully flown and landed with no pilot on board?
I'm not sure if this belongs here or on the drone site.
What is the largest aircraft (not spacecraft) that has completed an entire flight, including takeoff and no- or minimal-damage landing, either ...
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Countries that have unmanned and manned fighter teaming projects [closed]
I have been wondering what countries currently have military programs related to teams of manned and unmanned fighter aircraft? For instance, I know that the US has several programs related to this ...
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Can you put a propeller on the back of a plane, and have it go forward?
So, I was thinking about how drones work, and I can't figure out how drones with propellers at the rear of the drone can still go forward. I'm not that experienced in aviation so if this is a basic ...
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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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Hovering for free
I'm thinking about light solar drones, and started wondering if you could hover while not using any power by flying downwind. Something similar to how prey birds hover while tracking the ground. It ...
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Could ducted propellers improve efficiency in small drones?
I have seen that a new electric airplane design has decided to a choose ducted propeller design somewhat similar to the one of jet engines, explaining this design choice with the fact the ducted ...
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How AeroVironment's Switchblades steer their flight?
I'm very intrigued with how AeroVironment Switchblades: SW-300, and SW-600, steer their flight. There are plenty of images and animations and to my observation, none of the Switchblades have ailerons, ...
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Why do so many UAVS use a V-tail configuration?
How different is V-tail from a conventional tail in the perspective of aerodynamics & flight dynamics of aircraft?
I have seen that many UAVs, like the General Atomics MQ1 Predator, LSI Amber, ...
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Why aren't swarms of cheap consumer-level drones a viable anti-aircraft tactic?
In the Russia/Ukraine war, when it comes to cheap, consumer-level drones, I've only heard of them used for reconnaisance, not for anti-aircraft defence. But given that:
In civil aviation, a single ...
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Restricted airspace and lower limits
I am a new UAS pilot who will be flying agricultural fields. Naturally, my first flight location is close to a restricted airspace for military practice. I want to make sure I my flights are compliant....
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Calculating forces on a hexacopter which create yaw
I'm trying to design a mathematical model of a hexacopter, and while researching the mechanics of the object I could not figure out how to calculate the total torque on the drone in 'Z' axis that ...
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What is the decrease in power when a drone is in descent?
For a quad-copter, or a fixed-wing drone with quad-rotor formation, how much would the power of the motor decrease when a constant speed descent is needed to bring the drone back to the ground? Does ...
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What rules exist that state what a competent authority do with a runaway drone?
In this AAIB accident investigation, published in 2021, a rather terrifying event is described in which a 3m long, 95 kg remote-control nearly-home-built drone is flown at speeds of up to 25 m/s below ...
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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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How was the AeroVironment Helios able to fly to the edge of space at no more than 23.5 kn?
The NASA/AeroVironment Helios holds the FAI record for the highest sustained horizontal flight at 96,900 ft (29.5 km) MSL. It reportedly spent more than 40 min above 96,000 ft. It could fly no faster ...
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In the US, what is the process for filing a DROTAM? [closed]
For drone pilots in the US, what is the process for filing a DROTAM?
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What’s the most efficient way to earn the drone / 107 qualification for a retired ATP Pilot?
As an ATP-rated retired pilot (30 years experience) and a recreational drone pilot, I'd like to get the type for UAD (drones).
I am not 61.56 current.
What would be the most time- and cost-efficient ...
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How does drone reliance on GPS make it 'semi-stealthy'?
I saw this on CNN today.
For months, US intelligence and military personnel in Iraq have been raising alarms about the risk to American forces from these newer, more sophisticated Iranian-made drones....
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What are these components in a DHS/CBP Predator drone?
In the following diagram showing the "DHS/CBP UAS Platform Configuration", what are these components and what are they used for?
PPDM
SPMA
RCM
RVT encoder
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Can we bring a rotorcraft like Ingenuity to an altitude of the same pressure as the one on Mars?
At Perseverance's and Ingenuity's location the atmospheric pressure is about 750 Pa (0.11 psi). On Earth, we find that pressure about 110,000 ft high. If we built a copy of Ingenuity, could we bring ...
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What airfoil is used on the MQ-1B Predator's wing?
There are lot of UAV's in todays world to be re worked on. The General Atomics series of UCAVs is quite remarkable. I have selected MQ-1B Predator UAV, for an geometric analysis project(undergraduate)....
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How do airports detect drones?
Recently, there's been a lot of coverage in the news of drones disturbing operations at airports.
Do airports have a method to detect drones? If yes, how does it work? If it's still an emerging ...
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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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