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View Full Version : Could a drone down a chopper?


mary meagher
27th Aug 2016, 20:52
Just finished watching Casualty on BBC...the usual carnage and heroic medics...
only one question remains....can a kids toy really down a chopper? are they that vulnerable?

Thracian
27th Aug 2016, 21:33
are they that vulnerable?Depends, where the "toy" hits the heli.
I would guess (and only guess):
Through the front pane: Incapacitating the pilot, loss of control -> down
Into the main rotor disc: Damaging a blade, bringing rotor out of balance and destroying aerodynamics -> maybe an autorotation would work
Into tail rotor: same as a hit into the main rotor?
Into air inlet for turbines: Maybe nothing would happen (especially, if filters are installed), maybe the worst thing could result in engine failure, if at least some parts of the drone make it through all the way

I wouldn't want to be the first to find out...

Thracian

lelebebbel
27th Aug 2016, 21:46
http://i.imgur.com/V7Z9rj4.png


http://i.imgur.com/Pfql1MP.jpg


See the problem with that question?

rotarywise
27th Aug 2016, 22:47
Have a look at the Powerpoint presentation here (https://www.eurocockpit.be/pages/remotely-piloted-aircraft-systems-drones) Scroll down and click on "relation to low-level helicopter operations" - Scary!!

G0ULI
28th Aug 2016, 01:38
While I could see a large 10Kg drone posing a severe risk, the actual model shown in the programme would in all likelyhood be chopped into pieces without the pilots even being aware of it. There might be a chip or two in the rotor paintwork from contact with metal parts or battery pack, but if tail rotors were that vulnerable, every bird in the sky would present a lethal risk.

Nice to see an air accident depicted without the airframe disappearing into a fireball the moment it makes contact with the ground. Frighteningly realistic.

hueyracer
28th Aug 2016, 03:31
A 15 Gramm Sparrow can smash through the windshield and blind the pilot.......why do you think a thing made out of hard materials rather than flesh and muscles would need to be so much heavier?

Some helicopters cruise at 120 or even 150 knots-thatīs close to 300 Km/h....

Ever hit a big bug while riding a motorbike on the highway at 200 K/h?

whoknows idont
28th Aug 2016, 05:58
Also keep in mind that even small lithium batteries might burn extremely hot and produce large amounts of thick toxic smoke when shorted or physically damaged.

lithium torch (https://www.youtube.com/watch?v=BLc74Qpvweg)

mftx7jrn
28th Aug 2016, 07:11
With ease, if the drone is big enough. Scary stuff and a FS issue that, in my personal opinion, is a ticking time bomb.

onetrack
28th Aug 2016, 10:20
With the exploding numbers of drones owned by anyone with a few dollars - and too many of those owners, with an inadequate number of working brain cells - it will only be a matter of time before there's a proven, "drone-initiated" helicopter crash.

cattletruck
28th Aug 2016, 10:48
Those composite blades don't take too kindly to hitting anything at near the speed of sound. Sure they are fitted with a leading edge metal strip but that is for the prevention of pitting and corrosion.

lotusexige
29th Aug 2016, 12:29
I saw the prop on a VP1 being totally trashed by a bit of long grass so I would consider tail rotors to be particularly vulnerable.

DroneDog
29th Aug 2016, 14:04
As suggested before, only if the heli was at a rate of knots and had a head on with a heavy camera coming thru the windshield. The situation depicted in casualty, the drone would get no where near the heli it would be fly swatted by the downdraught of the main rotor. Even strong winds really dampen drone performance.

John Eacott
30th Aug 2016, 01:43
BBC 'Casualty' have just dealt with this very scenario: quite well done, too :ok:

(Jump to 1 minute and avoid the deep and meaningful looks from the actors ;) )

SyXRylYbXkU

How it was created:

i8WnTHUzFtQ

Preempting the inevitable comments about changing to a 109AII, why didn't the pilot keep the speed on for fin efficiency, etc: it's a TV production!

chopjock
30th Aug 2016, 12:36
BBC 'Casualty' have just dealt with this very scenario: quite well done, too

Except why shake the camera when there is no camera in the story line?
Far too much use of "shaky cam" in my opinion.

onetrack
31st Aug 2016, 02:30
John, the OP mentioned watching "Casualty" on the BBC in their first sentence. You apparently missed it?

John Eacott
31st Aug 2016, 02:50
John, the OP mentioned watching "Casualty" on the BBC in their first sentence. You apparently missed it?

Sure did :rolleyes:

John R81
27th Jul 2017, 06:42
Report published into the very question: 'Small and Military Piloted Aircraft Systems (drones) - Mid-air Collision Study' (https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/628092/small-remotely-piloted-aircraft-systems-drones-mid-air-collision-study.pdf)


The short answer: Helicopters are very vulnerable to critical damage due to drone strike - much more so than bird strike.

Flying Binghi
27th Jul 2017, 09:35
Report published into the very question: 'Small and Military Piloted Aircraft Systems (drones) - Mid-air Collision Study' (https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/628092/small-remotely-piloted-aircraft-systems-drones-mid-air-collision-study.pdf)

The short answer: Helicopters are very vulnerable to critical damage due to drone strike - much more so than bird strike.

An interesting read.

Another thing to consider is door off ops. The drone might approach the helicopter at 90š to the heli flight path and come straight in the door opening hitting the pilot at the heli's forward speed. End badly I'd suspect.





.

Helisweet
27th Jul 2017, 13:06
A letal drone Strike is coming soon. After that, new regulation.