Drones are fun toys until you get hit in the face by one

August 15, 2014 by Robert Stone, The Conversation
Even bears don’t mess with drones. Credit: John Biehler , CC BY-SA

Mini drones are not yet appearing in our skies on a daily basis but they certainly are a rapidly growing trend. People can and do get hurt so we really need to help amateur pilots learn how to fly their new toys safely.

There are all kinds of exciting developments happening in this field and hobbyists are now able to pick up a device for relatively little money. But as more and more of these devices come onto the market, more grizzly images are popping up online to show what happens when people lose control.

My team and I have been experimenting with drones for some months, flying them over hard-to-reach heritage sites but, as our experience of deploying these platforms has increased, we have become increasingly concerned about how they can be used safely.

Many of the promises about what we will use drones for in the near future are just flights of fancy, especially given the limited payload capabilities of most of commercial off-the-shelf products, but the technology is certainly evolving fast.

Out of control?

The main limiting factor for a drone is often the untrained pilot at its helm. There have certainly been incidents in the recent past which demonstrate the consequences of human error, system failure, flying in inappropriate weather conditions and sheer incompetence.

Earlier this year, a resident of Barrow-in-Furness was prosecuted for flying a radio-controlled aircraft in restricted airspace over BAE Systems' nuclear submarine facility. A similar incident occurred in May when a man was was questioned by the FBI for crashing a camera-equipped sUAV close to the Bridgeport Harbour Electricity Generating Station in Conneticut. No one was injured in either case but both represented pretty serious incidents in terms of flying within restricted airspace.

There have been numerous reports of injuries, even fatalities, caused by loss of control of an sUAV and some pretty harrowing images can easily be found online. Reported cases include a bridegroom who was struck in the face by a quadcopter flown by an adventurous wedding photographer, and the crashing of a hexacopter into the grandstand at Virginia Motorsports Park, injuring five. The second half of 2013 was particularly bad, with fatalities in Texas, Korea and Brazil and the horrendous case of a 19-year-old who died instantly in a Brooklyn park when the blades of his radio controlled aircraft struck his head and neck.

Of course, there are rules and guidelines about drones. But when the Civil Aviation Authority tries to address the human factor in its guidelines, its efforts fall rather flat. Its warnings are far too generic and rigid to cope with a rapidly changing technological scene. It discusses the dangers of remote data feedback and stresses that it's important for pilots to remain situationally aware, but the style of wording and absence of illustrated examples do little to emphasise the very real dangers of flying when non-expert pilots are in charge of a drone.

Having now experimented with a number of drones at historical sites, often in remote moorland or coastal regions, I find myself in strong agreement with those who call for regulations to be strengthened. Indeed, we have recently produced our own Standard Operating Procedures in an attempt to fill in the gaps evident in existing guidance.

Over the past 12 months alone, our hexacopter has evolved from a 2kg to 4kg payload capacity. Our students have, as a result, been able to experiment with different tools for the drones. One has been a camera that feeds video back to a headed mounted display worn by the pilot on the ground. This certainly generates impressive video but even our experienced pilot has been "drawn in" by the stunning picture quality, only to be alerted – just in time – to the appearance of the sUAV propeller blades in his field of view as the vehicle becomes progressively unstable.

Flying school

It is possible to take training courses for flying drones but these often tend to be aimed at those wanting to use sUAVs for professional or commercial work, as opposed to the hobbyist or academic researcher. It is clear that, as the stories of injuries, fatalities, property damage, invasion of privacy, trespass and airspace incursion multiply, the situation has to change, even though any change will, without doubt, be very unpopular with many hobbyists and retailers.

Some developers have started working on firmware modifications that would help pilots stop their from inadvertently flying into restricted airspace. This is a promising development, even if it might not be met with great enthusiasm from users, but much more needs to be done. Every drone sold needs to be registered and marked (perhaps even chipped) in some way so that it can be traced directly back to its owner if something goes wrong. There is no doubt that this will be difficult to enforce, especially as 3D printing technologies are increasingly being used to manufacture replacement components.

Drone pilots also need to submit to some form of basic competence assessment, such as through an app, and should then be granted a licence. Such an assessment could take the form of a test similar to those used to teach driving students about decision-making and observational skills.

sUAV simulator packages already exist, as do apps, but most fall short of teaching and evaluating the essential skills and awareness necessary for safe sUAV operations. We should focus on human-centred design issues from the start so that simulators can test reaction times, decision-making for flights in urban or sensitive areas, pilot distraction effects and other potential problems a pilot might face.

Of course, such tests would not replace professional courses but they would help to ensure that the growing number of pilots can fly their devices safely. Some might complain that these measures are over the top and totally unnecessary for something that is, after all, just a smaller version of a radio controlled helicopter. But just type "quadcopter injuries" into Google images and make your own mind up.

Explore further: NYC police see risks with drones' popularity

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3.5 / 5 (2) Aug 15, 2014
There is a pretty easy fix for most of these issues. Just add a few ultrasonic rangefinders to the drone to calculate distances and relative velocities. Then add a bit of code for collision avoidance. It won't stop all crashes, but it will stop most.
Lex Talonis
1 / 5 (2) Aug 15, 2014
Drones need to be equipped with high explosive bombs, grenades, rockets and machine guns and only be permitted to be in the hands of the military and the police - so we can all be safe.
5 / 5 (1) Aug 15, 2014
Baseballs are fun like that too. At some point it would be nice to be treated as adults.
1 / 5 (2) Aug 15, 2014
They are even less fun when they hit you in the nads.
not rated yet Aug 16, 2014
There are rules and guidelines around radio controlled flight that have not been followed in the examples presented in this article and the fatality has nothing to do with drones. Not flying in built up areas, close to people, above 400ft, in restricted areas, near roads, over private property without permission, etc. are examples of the basic rules.

Flying radio controlled aircraft has around as a hobby for decades. With more advanced capabilities, mostly there for safety, and the addition of cameras, some people outside of the hobby have started calling them drones. The fatal accident listed above involved a very large helicopter without any advanced capabilities or camera but it is somehow still considered a drone.

Large radio controlled aircraft can be dangerous and have extra rules for safe use, often including the requirement that the aircraft and pilot are certified.

All of the listed incidents involve not following the rules and failing to fly responsibly.
Lex Talonis
not rated yet Aug 18, 2014
We also need to consider the Darwin awards - for idiots not only who crash their aircraft into other people and other things, but also into themselves - and they die.

Seriously - as a former child person who built and flew a few piston based infernal combustion engined aircraft and noting with much non delight, how the engines liked to start the propellers into a rate of radians per second, faster than ones fingers could be moved out the way when starting the engines, I note that shrouding of the propellers ought to be mandatory, so that the blade tips, ought to jam into the ring instead of you...

And that flying them, only ought to be allowed over areas that do not contain enormous amounts of people - so that if they conk out, they drop onto the ground, instead of the grand stand....

We also need to be mindful of the fact that people DO learn by doing and making short cuts and failures to perform calculations, and trials, before doing the flying...

And this is how people are.

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