You can hardly follow any media without finding some article about the latest whizzbang electric propulsion multicopter project that “will transform urban transportation!” Or so they breathlessly exclaim. Fine. I look forward to going from a downtown hotel to the airport in minutes versus slogging through ground traffic for an hour. Will these arrive in some near future? Maybe. Even if they do arrive sooner than later, would a pilot feel entirely comfortable flying in an autonomous, computer-controlled aircraft? Only you can answer that question. You might get a chance sooner than you think. Whatever you think right now, would you change your mind if you got to fly one of these machines, safely, of course? Since autonomous operation is part of the plan, a current-day Lift Aircraft Hexa could take over any time and land safely on its own. Heck, my ancient (3-year-old) DJI drone can do that, with zero input from me.
A Multicopter for the Rest of Us? Part 103 eVTOL Hexa Is Preparing for a U.S. Tour
You can hardly follow any media without finding some article about the latest whizzbang electric propulsion multicopter project that "will transform urban transportation!" Or so they breathlessly exclaim.Fine. I look forward to going from a downtown hotel to the airport in minutes versus slogging through ground traffic for an hour. Will these arrive in some near future? Maybe. Even if they do arrive sooner than later, would a pilot feel entirely comfortable flying in an autonomous, computer-controlled aircraft? Only you can answer that question. You might get a chance sooner than you think. Whatever you think right now, would you change your mind if you got to fly one of these machines, safely, of course? Since autonomous operation is part of the plan, a current-day Lift Aircraft Hexa could take over any time and land safely on its own. Heck, my ancient (3-year-old) DJI drone can do that, with zero input from me. These things are pretty smart. So is a Tesla. The controlling technology is largely here. So… would you go fly one? From its base in Austin, Texas, Lift Aircraft has announced big plans. Reviewing their historical performance, it appears this company is capable of advancing rapidly to real-life products. Contrarily, some of these multicopter or swing-wing (Osprey-like) projects promote futuristic Urban Air Mobility (UAM) schemes focused on bringing in millions of dollars, delivering more promise than product. On the other hand, Lift's short history shows a steady movement toward their goals. They've checked a lot of the right boxes, enlisted some experienced talent, and look to be on their way, even finishing their first "shipset" and claiming, "Lift is the first company in the United States to start serial production of an eVTOL aircraft."
- In November of 2017 — Lift Aircraft founded.
- December 2017 — Design work underway
- July 2018 in Lago Vista, Texas — First unmanned flight
- October 2018 in Lago Vista, Texas — First manned flight
Should You… Support or Object?As I wrote this article, I knew sharp-eyed readers might (1) question Hexa's weight and (2) accept its weight or not, some would lament this could chance unraveling the almost 40-year-old Part 103 regulation. Now, numerous readers have said for years that the rule needs updating but many others argue that asking for any change might put FAA's least restrictive regulation at risk. With those two points in mind, what say you? It doesn't matter if you love or hate Hexa. Do you welcome their novel approach to meeting 103 parameters or do you think it could jeopardize Part 103? Mosaic, the new regulation expected by the end of 2023, is significantly aimed at accommodating eVTOLs, UAMs, and drones into the airspace. Most readers are focused on how Mosaic affects LSA but multicopters are a major reason why Mosaic exists in the first place. However, the new reg is still two years away. Therefore, a multicopter that can actually qualify with FAA as a Part 103 vehicle and is (nearly) ready for the market has an early lead. Slipping into a sweet spot, Lift and their Hexa need not wait for Mosaic, yet will benefit from its arrival.
Here's how the Part 103 calculations work for Hexa:
- Base empty weight allowance: 254 pounds
- Floats (30 pounds each x 7 floats): 210 pounds
- Ballistic parachute: 24 pounds
- Total allowed: 488 pounds
- Current Hexa empty weight: 432 pounds
- Excess allowance remaining: 56 pounds
Will "the Public" Fly Hexa?To reassure pilots and everyone else, Lift has put major attention on safety. "Hexa is semi-autonomous so, regardless of what the pilot does, it will only fly in a safe manner within the limits programmed into the autopilot computer," notes Lift as they work to bring flying to the public. For example, "The aircraft is continuously calculating the energy required to 'return to home' based on altitude, wind speed and direction. Regardless of what the pilot does, the aircraft will automatically return and land when the battery approaches this level plus a reserve, and it can also automatically land in designated safe landing areas, if necessary.” Hexa presently has a 15-minute flight endurance The plans are more explicit in several ways and you can explore their website to learn more. Does "semi-autonomous" mean you are simply along for the ride? You direct the flight but you (theoretically) cannot screw it up. Is this "cheating?" Are you merely a person saying where you want to fly and the aircraft does it all for you? These are worthy questions pilots may ask. One answer is that pilots already use design features to operate aircraft more safely: LSA have straight-and-level or 180-turn buttons and very effective autopilots. Engineers went to great trouble to assure an aircraft recovers well from a stall or has landing gear able to absorb hard touchdowns. Are these design features "cheating?" Over many years in this business I've heard dozens of ideas about how to get more people into aviation. This one sounds as good as any and better than most. After an hour in their simulator, Lift Aircraft says anyone can go fly, safely. If — that's a big, giant IF — the software is robust enough, yes, I can believe that. Would it still be flying as a pilot does today? Well, truthfully, few current pilots might be willing to agree but it could produce better outcomes, that is, less crashes. This story is just beginning and I'll circle back if readers show an interest. But here's an important point. Lift does not intend to retail sell their Hexa 103 but rather to rent them at a facility they call "Vertiport" (image). The first is already underway but that's material for another article. I'll tell you what — if a Hexa comes my way, I'd love to take it for a flight. Would you?
The following lists highlight some but not all of Lift's plans. The company seems highly focused on safety. That's probably good for their corporate future but also good for the future of anyone who flies Hexa.
Could Lift Aircraft set up rental facilities and how would they guard against problems?
- FAR Part 103 allows rental of aircraft
- Redundant 2-way communication with Control (experts guiding a renter's flight)
- Dedicated controllers monitoring flight telemetry
- Multiple remote pilots on standby
- Assisted preflight and safety briefings
- Emergency assistance and intervention
What happens if a pilot gets in trouble while flying Hexa?
- Flight controlled by computer with joystick input (the pilot does direct the flight, is not just along for the ride)
- "Let go" of stick is a controlled hover
- Automated precision takeoffs and landings
- Automatic low battery Return to Home
- Automatic wind speed, direction adjustments
What are some safety features has Lift incorporated into Hexa?
- Eighteen motors, propellers, and batteries
- Safely land with up to 6 motors disabled
- Highly reliable — only 18 moving parts!
- Propellers out of reach
- Enhanced visibility
- Distributed batteries (away from pilot; located under each motor)
- All critical systems at least 2x redundant
- Design factor of safety — more than 2 everywhere
- 18 separate batteries for fault tolerance
- Batteries located way from pilot (thermal runaway tolerant)
- Safe emergency landing capabilities on water
- Energy-absorbing center float crumple zone
- Whole aircraft air-cushion deploys with low-altitude emergency airframe parachute