CARs Part IX Archives - InDro Robotics

InDro Robotics flies in urban wind tunnels for National Research Council project

Aug 24, 2023 | InDro News, Industry News, National Research Council, Scott Simmie, Transport Canada

Flying a drone in dense urban settings comes with its own set of challenges.

In addition to following regulations laid out in the Canadian Aviation Regulations (CARs) Part IX, operators have to contend with other factors. Helicopters, for example, routinely share urban airspace. And, in addition to surrounding buildings, streets are generally more densely packed with people and vehicles than other locations.

But there’s another factor that can really cause problems: Wind.

Airflow in urban centres is very different from rural settings. The close proximity of multiple buildings can amplify wind speed and create tricky – and invisible – areas of turbulence. These can cause havoc for operators, and potentially for people and property on the ground.

That’s why the National Research Council, in conjunction with Transport Canada and other partners, is conducting research on urban airflow.

Below: The view from the InDro dashboard, showing a wishbone-shaped appendage carrying two anemometers

WHY THE RESEARCH?

The National Research Council is helping to prepare for the future of Urban Air Mobility. That’s the coming world where intra-urban drone flights are routine – and where airspace is seamlessly shared with traditional crewed aircraft. As the NRC states on this page:

“The vertical take-off and landing capability of UAS promises to transform mobility by alleviating congestion in our cities.”

As part of its seven-year Integrated Aerial Mobility program (launched in 2019), the NRC has already been working on developing related technologies, including:

“optical sensor-based detect-and-avoid technologies to assist path planning of autonomous vehicles
“drone docking technologies to support contact-based aerial robotics tasks
“manufacturing of high-density and safe ceramic lithium batteries to enable low-emission hybrid-electric propulsion”

The NRC is also interested in wind. Very interested.

DRONE FLIGHTS IN URBAN CENTRES

Drone delivery – particularly for medical supplies and other critical goods – will be part of this world before long (home deliveries will likely come eventually, but not for some time). In the not-so-distant future, it’s likely that specific air corridors will be set aside for RPAS traffic. It’s also likely, eventually, that an automated system will oversee both drone and crewed aircraft flights to ensure safety.

Part of the path to that future involves looking at the unique characteristics of urban wind patterns – along with the potential challenges they pose to drone flights. Are there certain locations where increased wind speed and turbulence pose a greater risk to safe RPAS operations? What wind speeds might be deemed unsafe? Can data gathered help lead to guidelines, or even additional regulations, for operations in cities? If the speed of wind at ground level is X, might we be able to predict peak turbulence wind speeds? Might drone manufacturers have to revise their own guidelines/parameters to take these conditions into account?

Those are the questions that interest the National Research Council, in conjunction with Transport Canada and other partners. And InDro Robotics is helping to find the answers.

Below: A DJI M300 drone, modified by InDro and specially equipped with anemometers to detect windspeed while avoiding prop wash

RESEARCH

Previous studies have shown that turbulence caused by buildings can indeed impact the stability of RPAS flights. Now, the NRC is keen on digging deeper and gathering more data.

The research is being carried out by NRC’s Aerospace Research Centre, in conjunction with a number of partners – including McGill University, Montreal General Hospital, CHUM Centre Hospital, InDro Robotics and others. The flights are being carried out by InDro’s Flight Operations Lead, Dr. Eric Saczuk (who is also head of RPAS Operations at the BC Institute of Technology).

“Urban environments create a variety of exacerbated micro-level wind effects including shear, turbulence and eddies around buildings. These effects can locally increase reported wind speeds by up to 50 per cent,” says Dr. Saczuk.

InDro has been involved with this research for three years – with earlier flights carried out in the NRC’s wind tunnel. Now, the testing has become more real-world. InDro flies a specially equipped DJI M300. The wishbone-shaped appendage in the photo above carries two tiny anemometers placed specifically to capture windspeed and variations without being affected by the thrust generated by the rotors. The drone is also equipped with an AVSS parachute, since these flights take place over people.

THE MISSIONS

Some months prior to the flights, the NRC installed fixed anemometers on the roofs of the hospitals mentioned above. This allowed researchers to obtain a baseline of typical wind speeds in these areas. Then came the flights.

“Part of our mission is to fly the drone over three different rooftops and lower the drone to hover at 60m and 10m above the anemometer station,” says Dr. Saczuk.

“This allows NRC to compare the wind data recorded by the static anemometers with data captured by the mobile anemometers on the drone. Our launch sites are from the CHUM Centre Hospital and the Montreal General Hospital, which are about three kilometres apart with a pilot at each location. Additionally, we’ll be flying the drone from one hospital to the other and also along an ‘urban canyon’ between the three rooftops.”

CHALLENGES

Flying in urban locations always requires additional caution. The research also demands very precise altitudes while capturing data – along with piloting with the anemometers attached to the drone.

“Gathering the data always has its challenges – especially when operating over a dense downtown core such as Montreal,” he says.

“Many months of planning led to two days of successful data capture on July 26 and 27. One of the main challenges is maintaining C2 connectivity amongst the tall buildings. Another consideration is ensuring a proper center of balance with the added payload well forward of the aircraft. Resultingly, flight endurance is shortened due to the extra load on the motors and thus we had to modify our flight plans to account for this. We learned a lot during the first two days of data capture!”

For Dr. Saczuk, this is a particularly rewarding research project. Why?

“Quite simply because it’s cutting-edge and involves RPAS,” he says.

“We have established a great relationship with the test facility at NRC and Transport Canada, so to know that InDro is involved in helping to understand the potentially adverse effects of flying RPAS around tall buildings for the purpose of making these flights safer feels very rewarding. Personally, I also enjoy challenging missions – and this may well be the most challenging mission I’ve ever flown!”

Below: The M300, equipped with the anemometers and looking a bit like a Scarab beetle. The sharp-eyed will notice that the two anemometers are mounted vertically and horizontally

INDRO’S TAKE

InDro Robotics has a long history of involvement with research projects and other partnerships with academia. We are particularly drawn to projects that might have a positive and lasting impact on the industry-at-large, such as this one.

“Urban wind tunnels and turbulence have the potential to disrupt even a well-planned RPAS mission,” says InDro CEO Philip Reece.

“As we move toward more routine drone flights in urban centres, it’s important to capture solid data so that evidence-based decisions can be made and Best Practices evolve. This research will prove valuable to the Canadian RPAS industry – by helping to ensure safer urban drone operations.”

The research is ongoing; we’ll provide updates when further milestones are hit.

Breaking drone regulations can be expensive

Dec 15, 2022 | Drone News, Industry News, Scott Simmie

By Scott Simmie

Drone regulations exist for a reason. Actually, multiple reasons.

Probably the most important is to keep airspace safe and avoid any potential collisions or interference with crewed aircraft. That’s why altitude is limited to 400′ above ground level (AGL), and why flights in controlled airspace must be cleared through NAV Canada’s NAV Drone app. (If you’re a drone pilot and don’t have this app, you can get more details and links to download here.)

And, just as a reminder on that front, drones carrying out basic operations must be at least 5.6 kilometres (three nautical miles) from airports and 1.9 kilometres (one nautical mile) from heliports.

One of the other key reasons is to protect people and property on the ground. If you’re flying a drone weighing more than 250 grams and less than 25 kilograms, you’ll need to ensure that you’re separated horizontally from bystanders by at least 30 meters – though drones with an RPAS Safety Assurance declaration can fly closer in Advanced operations.

There are, of course, other rules. No flying over outdoor concerts, parades or other special events. Some of you may recall that a drone pilot paid a hefty price during the victory parade for the Toronto Raptors in 2019. The person in question flew over the event and was fined $2750 by Transport Canada. (We actually were at that parade and saw the pilot take off; he was flying a DJI Mavic Pro.)

Breaking drone rules can be expensive.

Below: A 360° shot taken during Raptors celebrations. The illegal drone flight took off about 15m from where this image was taken.

There’s a reason behind every rule

The laws that govern drones in Canada are written up in a section of the Canadian Aviation Regulations, also known as CARs. Specifically, they reside in Part IX. We recommend that everyone flying a drone in Canada – particularly drones weighing more than 250 grams – has a read through this section. It lays out the rules very clearly.

And if you break those rules? Well, there’s a price to pay. Fines for individuals include:

up to $1,000 for flying without a drone pilot certificate
up to $1,000 for flying unregistered or unmarked drones
up to $1,000 for flying where you are not allowed
up to $3,000 for putting aircraft and people at risk

So it’s worth knowing the regs, because violating them can both create risk and be very costly.

Forest fires

Wildfires in Canadian forests cause major problems every year. Significant resources are allocated to try to control and extinguish these fires – which often occur in remote locations. Aerial firefighting techniques are a big part of the equation, with water bombers and helicopters routinely deployed. (You can get a snapshot of the current wildfire situation in Canada with this interactive map. At the time this article was written, a significant Alberta fire – north of Banff and east of Lake Louise – was out of control. That fire started August 31 and has been burning for three and a half months.)

Helicopters are used to transport crews, and occasionally drop fuel retardant on small hotspots. Water bombers come in low to take on water from lakes and also drop that same water on fires from low altitudes so that targeting is accurate and there’s minimal dispersal of the fluid on the way to the ground.

And both of those scenarios? They mean these aircraft are often flying below 400′ AGL.

Keep your drone clear of forest fire operations

With that context, you no doubt have guessed where we’re going with this. Rules in CARs Part IX prohibit flying drones near forest fire operations. In fact, you must keep drones (and other aircraft not involved with the operations) at least five nautical miles (9.3 kilometres) away from the scene. There is also a mechanism within the Canada National Parks Act that allows for the prohibition of activities – including the banning of drone flights.

Recently, a drone pilot found out just how seriously regulators take flying drones close to a wildfire. A Canadian Press story published December 9th says that Rajwinder Singh was found guilty in an Alberta provincial court of the offence and fined $10,000.

In fact, Singh was one of four people charged for flying too close to the Chetamon wildfire in September. Four drones were also seized by authories.

InDro’s role

InDro Robotics played a role on the technology side. The company supplied drone detection equipment capable of identifying models, location and trajectory of drones in proximity of Alberta wildfires.

InDro is also involved with the Ottawa International Airport Authority’s ongoing Drone Detection Pilot Project at the Ottawa International Airport. Early in 2021, during the convoy blockade that took place in Ottawa, that project detected a very high number of illegal drone flights taking place over sensitive areas in the capital’s downtown core.

In fact, a sister company of InDro Robotics – Bravo Zulu Secure – specializes in drone detection and mitigation systems. InDro Founder and CEO Philip Reece is the Chief Technical Officer of Bravo Zulu. Here, he explains some of the company’s proprietary systems:

InDro’s Take

We’ve been in this business long enough to remember the early days. The drone space was often called The Wild West, because many people were either unaware of regulations or chose to willfully ignore them. This was particularly true of rogue pilots, usually recreational operators, who would carry out reckless flights. Those flights often (and rightfully) received negative press coverage and caused regulators to take an even more cautious, incremental approach with opening up the skies. Understandable.

Since then, the drone community has done a great job of educating and even policing itself. Flights like the four that took place near that Alberta wildfire are now, fortunately, very rare.

But, as we’ve seen here, they still happen. Not only is it wise for drone operators to become fully familiar with Part IX of CARs, but also to be aware that hefty fines can and will be imposed on those who violate the law. It’s also worth remembering, regardless of location, that the technology exists to detect these flights, along with the location of the operator.

Thankfully, the vast majority of drone pilots know the regulations – and abide by them.