Wisk promises autonomous Advanced Air Mobility

Wisk promises autonomous Advanced Air Mobility

By Scott Simmie

 

If you’ve been following our posts, you’ll know that InDro Robotics was part of a Canadian trade delegation that visited California last week. Some 40 organisations took part – including private companies, airports, academics, Transport Canada, NAV Canada and the National Research Council Canada. The trip was organised by Canadian Advanced Air Mobility (CAAM), the organization that speaks with a unified voice on behalf of industry and others with a vested stake in the coming world of AAM.

California was chosen because it’s home to three of the leading companies in the Advanced Air Mobility space: Joby, Archer and Wisk. It’s also home to the NASA Ames Research Center – which is working closely with industry on multiple technical issues as the world of AAM approaches. Last week, we shared highlights of our visits at Joby and Archer with this post (which we’d encourage you to read for context).

Today’s post? It’s all about Wisk, the final air taxi company the delegation visited. And its vision?

“Creating a future for air travel that elevates people, communities, and aviation.”

Unlike Joby and Archer – which plan to launch with piloted aircraft – Wisk differentiates itself with its “autonomous-first strategy.” That means, once it has attained all the necessary FAA certifications, the first passengers will climb on board an aircraft that flies itself. An autonomous aircraft carrying human beings? That’s a really big deal.

“When we’re successful at certifying this aircraft, that has the potential to change so much more beyond Wisk,” explained Becky Tanner, the company’s Chief Marketing Officer. In fact, she believes it will have an impact on the broader aviation industry, encouraging it to “take a step forward.”

Wisk is currently flying its sixth-generation full-sized aircraft. Its first generation was autonomous, but the following two were piloted.

“We made the conscious choice from Generation 3 to Gen 4 to stick with autonomous aircraft,” says Chief Technical Officer Jim Tighe. He points to the Generation 6 (which they call “Gen6”) on the floor.

“There will never be a pilot in that aircraft,” he says.

Below: Wisk’s Gen6 – the latest iteration of its autonomous air taxi designed to carry four passengers

 

 

Wisk Gen6 Autonomous Air Taxi

THE DESIGN

 

Like Joby and Archer, Wisk’s basic design is a fixed-wing eVTOL that uses tilt-rotors on booms attached below the wing. Two motors are on each of those six booms. The forward motors have tiltable five-blade rotors that allow them to transition for more efficient forward flight. These motors are in use throughout the flight – takeoff, landing, hover, forward flight – and any other manoeuvres. The rear motors are used for the VTOL portions of flight but are turned off once Gen6 has transitioned to forward flight.

Gen6, as you perhaps guessed, is the sixth full-size aircraft that Wisk has designed and built. And, like Generations 1, 4 and 5 it’s fully autonomous. That feature eliminates the possibility of pilot error.

“It’s obviously a differentiator,” says Tighe. “But we really believe that autonomy will enable safety. These are challenging operations. Short distance flights, you’re doing a lot of takeoffs and landings and you’re doing it in congested airspace.”

Building a completely autonomous aircraft is difficult. But it’s especially challenging – and rewarding – when you have to invent required components.

“When we first started, most of these systems did not exist – so we had to build them ourselves,” CTO Tighe told the Canadian delegation. That included motors, highly optimised batteries, flight control systems and much more. The company now holds 300+ patents globally and has carried out more than 1750 test flights with full-scale aircraft.

“It’s really important to design systems that meet our challenges for design, safety, weight and performance requirements,” he said, adding “It’s a lot easier if you can work on it yourself.”

Tighe, who dresses and speaks casually, comes with an impeccable background. After his first few years working with Boeing as an Aerodynamics Engineer, he worked as Chief Aerodynamicist for 14 years at Scaled Composites. That was the Burt Rutan company known for an incredible number of innovative aircraft and world aerospace records.

But Scaled’s jewel in the crown came right in the midst of Tighe’s tenure. The company designed and built SpaceShipOne and mothership White Knight. SpaceShipOne was a crewed, reusable suborbital rocket-powered aircraft that was carried to 50,000′ AGL while affixed beneath White Knight. When it was released, SpaceShipOne ignited its rocket engine, which took the small aircraft to the edge of space (100km). By accomplishing this feat twice within two weeks, Scaled Composites won the $10M Ansari X Prize. The technology, which includes a feathered system where the wing of the spacecraft rotates for optimal atmospheric entry, is core to the Virgin Galactic space tourism program. Tighe left Scaled Composites in 2014, moving directly to Wisk – a job he describes as “really fun if you’re an engineer.”

Below: The Gen6, which is capable of carrying four passengers of all shapes and sizes, including passengers with mobility issues

 

 

Wisk Gen6

AUTONOMY

 

Autonomy isn’t just about the technology (though we’ll get to that). It’s also part of a strategic business model in a market sector that will undoubtedly be competitive. Both Joby and Archer will initially have piloted models, meaning one of the four seats will be taken by the pilot. That not only costs more (to pay for the pilot), but also means losing revenue for one passenger on every single flight.

But will passengers embrace flying without a human at the controls? Wisk believes so, and says it puts great emphasis on safety. And here, it has some help: Wisk became a fully-owned subsidiary of Boeing in 2023 (though it operates separately). Some 150 Boeing employees are directly involved with the Wisk operation. That relationship, says the Wisk website, “allows us to tap into Boeing’s development, testing and certification expertise, and more.”

And on the autonomy front? In addition to its own inventions, Gen6 relies heavily on tried and true systems like autopilot. It’s self-flying approach includes, according to its website:

  • “Leveraging the same proven technology that accounts for more than 93% of automated pilot functions on today’s commercial flights (autopilots, precision navigation, flight management systems, etc.)
  • “New, innovative technology such as improved detect and avoid capabilities, sensors, and more
  • “Wisk’s logic-driven, procedural-based, decision-making software which provides reliable, deterministic outcomes.”

What’s more, Wisk already has a highly integrated system that allows human flight supervisors to track missions from the ground and monitor aircraft systems. Those flight supervisors will have the ability to intervene remotely, should that ever be required. It’s anticipated that, initially, one supervisor will be responsible for monitoring three missions simultaneously. Wisk offered a simulated demonstration of this system – which already looks pretty mature.

The location the delegation visited was in Mountain View, CA. This Bay Area campus is responsible for engineering, composite assembly, airframe assembly, motors, its battery lab, autonomy lab and is home to the corporate team. In addition, Wisk has additional locations in the US, Canada (Montréal), Poland, Australia and New Zealand. Its flight tests and R&D are carried out in Hollister, CA. The company currently has about 800 employees (including 50 in Montréal).

 

SUSTAINABLE AND ACCESSIBLE

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One of the many impressive things about Wisk was its emphasis on design. Engineers have worked hard to reduce the number of moving parts in the aircraft – points of failure – to the point where there no single mechanical or software problem could take the aircraft out of the sky. But equally impressive was its commitment to design.

Beyond ensuring everything is comfortable, ergonomic and safe for passengers – a great deal of work has gone into ensuring any Wisk aircraft will be accessible for people of all shapes and sizes and even with disabilities. Wisk has an ongoing program where civilians with physical or sensory limitations are brought into the lab to try out the latest iteration of the cabin and offer feedback for improvement. For example, there’s Braille in the cabin and on the flight safety cards. And, when it was discovered that a guide dog was fearful of the metal steps for climbing up and into the cabin – they redesigned them to be easier on the paws. The guide dog happily climbed aboard the redesigned steps on a subsequent visit.

In conjunction with making the service affordable, this philosophy is something Wisk emphasised during the visit.

“The big vision of this is to have this accessible for everyone,” said CMO Becky Tanner. “Making sure this feels comfortable and enjoyable and safe for all kinds of people – people with disabilities, people with different heights, shapes and sizes.”

Below: InDro’s Scott Simmie (front right) inside Gen6. InDro’s Dr. Eric Saczuk, who was attending on behalf of BCIT’s RPAS Hub (which he directs) is in the seat behind him. Dr. Saczuk is also InDro’s Chief of Flight Operations

 

Scott and Eric on Wisk Gen6

INDRO’S TAKE

 

Before we get into our view of this world, it’s also worth mentioning that the delegation had the privilege of touring the NASA Ames Research Center. We saw, among other things, a high-end simulator purpose-built for testing eVTOL flight in congested urban airspace – as well as top-level research into developing predictive models for turbulence at the coming vertiports – where these vehicles will takeoff and land.

“The worlds of Advanced Air Mobility and Urban Air Mobility are definitely coming. This is truly going to be an inflection point in aviation, and we foresee many positive use-case scenarios beyond air taxis that these technologies will enable,” says InDro Robotics Founder and CEO Philip Reece.

“It was highly instructive to get a front-row seat with these industry leaders, and we thank CAAM for its foresight in planning and executing this important trip. InDro will have some announcements of its own for the AAM space – both for service provision and more – down the road.”

We look forward to these companies gaining their final FAA Certifications – and seeing these aircraft carry passengers and eventually cargo.

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

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

By Scott Simmie

 

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

NRC Urban Wind Tunnel Eric

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

NRC Urban Wind Tunnel Eric

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.”

 

NRC Urban Wind Tunnel Eric

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

NRC Wind Tunnel Eric

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.