The Anonymous Widower

All Electric Plane Startup Eviation Aircraft Secures Orders For 150 Units

The title says it all on this article on Nocamels.

Feeder airlines seem to believe in Alice!

I do think, that this is one of the most exciting ideas in development.

November 8, 2019 Posted by | Transport | , | 2 Comments

Orders For A New All-Electric Airplane Now Top 150

The title of this post is the same as that of this article on Bloomberg.

This looks to be a very positive article as Eviation Aircraft now have more orders for the all-electric Alice aircraft.

This is a couple of paragraphs from the article.

Talks are underway with a fourth possible client in Australia, while the CEO has previously said that prospective customers include major U.S. carriers like United Airlines Holdings Inc. and JetBlue Airways Corp., which are interested in planes to feed their hubs.

The U.K. also represents a natural market, given its relatively small size and plethora of regional airports, Bar-Yohay said. The Alice would be well suited to Virgin Atlantic Airways Ltd.’s Connect arm — previously Flybe — which has an average flight time of 55 minutes. The executive was appearing with Virgin founder Richard Branson and CEO Shai Weiss at a technology conference.

I hope the second paragraph is true, as flying in an all-electric aircraft is definitely on my bucket list!

I would feel that if the aircraft does well, then this experience would translate to France.

 

October 25, 2019 Posted by | Transport | , | Leave a comment

Exclusive Interview: Eviation’s Co-Founder And CEO Omer Bar-Yohay

The title of this post, is the same as that as this article on Helicopter Investor.

As the title says, it is an interview about the Eviation Alice, with the CEO of the company behind the project.

It contains some interesting answers.

The Market

Omer Bar-Yohay made these points.

  • The US, where 70 percent of General Aviation happens.
  • Some interest from regional operators struggling with low margins. Have Eviation got the performance, range and capacity, in line with what regional operators can afford?
  • They were surprised to see the size of interest from freight operators.

Later he says that the current version can handle 2,400 pounds of freight, which is just over a tonne.

What is the value of a tonne of small packets, specialist seafood, agricultural product or medical supplies?

Autonomous Flight

The regulators or the market are not ready for it.

VTOL

There are a lot of other players , ideas and money looking at this.

Focused

Eviation Air seem to be very much focused on getting their plane in the air and to market.

Conclusion

If nothing else, Eviation Air seem to be a professional company and they have carefully researched what their unusual plane can and will do.

Transport is liberally sprinkled with odd ball ideas, that took advantage of radical thinking to create world beating products.

Consider the De Havilland Mosquito, Douglas Skyhawk, Hawker-Siddeley Harrier and Issigonis’s Mini.

There are also several absolute duds around, because companies got the technology wrong.

July 4, 2019 Posted by | Transport | , , , | Leave a comment

Who is Alice? – An Introduction To The Bizarre Eviation Electric Aircraft

The title of this post, is the same as this article on Simple Flying.

It is well-worth reading.

June 27, 2019 Posted by | Transport | , | Leave a comment

Eviation Alice Illustrates The Choice Of A Good Name

I have set up a Google Alert for Eviation Alice and it is finding a lot of articles.

It not only illustrates that the arrival of an electric airliner excites people, but also that the choice of name is a good one.

June 22, 2019 Posted by | Transport | , , , | Leave a comment

Could We See Eviation Alice Aircraft Flying Routes In The UK?

The Eviation Alice nine-seat aircraft may on the face of it, not have many applications in the UK.

But consider the following.

The Eviation Alice Could Be A Very Good Neighbour

Consider.

  • The three electric motors could be reasonably quiet.
  • The propellers are positioned in the vortexes created by the wing-tips and the fuselage.
  • The specification of the plane states that the  propellers can be adjusted for pitch and rpm to reduce noise.

Imagine a single runway airport for electric planes only.

It would be likely, that the noise footprint would be very small!

As the Eviation Alice, is replacing Cessna 401 aircraft at Cape-Air, I suspect that the Alice is designed to be able to use similar runways to the Cessna 401, which can easily land and take-off in a seven hundred metre runway.

This could mean that new runways could be built in places that would currently be rejected.

Would this open up these  possibilities?

New airports being created to serve towns with difficult road and rail links.

New runways close to major airports for electric low-noise aircraft only.

The Eviation Alice Doesn’t Have To Fly High

Typically airliners fly high and getting up and down takes a long time. But they don’t always have to fly that way!

A couple of years ago, I flew from Schipol to Southend. It was a clear day and the pilot flew directly across the North Sea at about three thousand feet and then straight in to Southend Airport.

We arrived very early.

I wonder, if as small quiet electric airliners get more common, that Air Traffic Control will develop ways of using their capabilities and quietness to create new routes.

Imagine flying from Norwich to Edinburgh, which is about 260 nautical miles in an Eviation Alice.

  • I have flown Ipswich to Edinburgh many times and it is uncluttered airspace.
  • You have to cross an airway at Hull
  • Youcan even follow the coast.

Flying lower could save time!

Electric Planes Will Get Bigger

To my mind, nine seats is not enough, but twenty would be useful on routes like the following.

  • Edinburgh And Wick
  • Glasgow and Derry
  • London and Derry
  • London and New Quay
  • Manchester and Derry
  • Norwich and Aberdeen
  • Norwich and Manchester

In some cases they could replace a more expensive full-size airliner.

I suspect that Eviation have the figures.

But suppose, you wee creating a bigger thirty-seat version of the Alice!

  • It would have another twenty-one passengers.
  • With baggage at 90 Kg a person, this would add a weight of under two tonnes.
  • The plane would need a larger volume, but the composite structure would mean only a small increase in weight.
  • The plane would probably have about a forty-percent increase in take-off weight.
  • So it would probably need a similar increase in battery capacity.

If battery energy density increases at three percent per annum, this would mean it would take about ten years.

 

The Eviation Alice Should Be Cheaper To Run Than A Thirty-Seat Aircraft

This could mean that the Eviation Alice could replace larger aircraft on thin routes.

The Eviation Alice Could Replace A Britten-Norman Islander On Some Routes

Some routes like the internal Orkney services probably aren’t suitable for an Eviation Alice, but I suspect others are.

The Eviation Alice Probably Needs A Proper Runway

I suspect that Eviation Alice aircraft need a runway with a firm surface, like concrete or asphalt, although some grass runways might be acceptable.

Feeder Services To Large International Airports

In England, there are not many of these routes, as there are usually trains or good roads.

But in Scotland, there are numerous services from the Far North and the Islands to Edinburgh and Glasgow.

Conclusion

If the Eviation Alice is a success, expect to see them or similar electric aircraft in the UK.

Flying in one of these is on my bucket list!

 

June 19, 2019 Posted by | Transport | , , | Leave a comment

Alice Promises Passengers A Pollution-Free Wonderland

The title of this post is the same as that of this article in The Times.

The Eviation Alice is a composite battery-electric aircraft, that has just been ordered by Cape-Air, who are based in Barnstaple, Massachusetts..

Currently, Cape-Air flies the following fleet of aircraft.

In addition, a hundred Tecnam P2012 Traveller are on order, which seat nine passengers.They will replace the Cessnas.

The specification of the Tecnam P2012 Traveller, was developed with input from Cape-Air,

  • Two Avco Lycoming piston engines.
  • 190 knot cruising speed.
  • Range of 950 nautical miles
  • Full certification.
  • Large passenger door.
  • Suitable for commuter, air taxi, medevac, troop transport and air cargo roles.
  • iSingle-pilot operations, a modern cockpit, an unpressurised cabin and a metal air-frame.
  • High -wing for visibility
  • Fixed landing gear for operation from rough landing strips.

It appears the Italians have designed a modern Islander.

This leads me to the impression, that the commuter airline operator are experienced, conservative and know what they want.

On the other hand, Cape-Air have just ordered ten Eviation Alice aircraft for air-taxi operations.

  • Nine passengers and two crew
  • Three 260 kW electric motors
  • 900 kWh Li-ion battery
  • 260 knot cruising speed.
  • Range of 565 nautical miles.
  • 95% composite air-frame.
  • Fly-by-wire control
  • Unpressurised cabin.
  • Retractable landing gear.
  • Automatic landing.

It is not a conventional aircraft.

If you want to learn more, this article on Aviation International News, which is entitled Eviation’s Alice To Fly This Year, gives a lot more details.

These are a few points.

Aerodynamic Design

It is to be expected,  that the composite structure has created a very aserodynamic design.

Battery Weight

The battery comprises sixty per cent of the weight of the aircraft.

Battery Charging

The Aviation International News article says this about charging.

The battery system on the Alice will be fully rechargeable in one hour and 10 minutes, using a half-megawatt charger on a mobile “bowser” truck that itself is charged up by plugging into the local electrical grid. This avoids having to build charging stations at airports, he said. Not all routes will require a full charge—the basic ratio is a half hour of charging time per hour of flight.

Given the 1:2 ratio between charging time and flight time, I suspect that Eviation are using similar tricks to those used by Vivarail with battery trains, that I wrote about in Vivarail Unveils Fast Charging System For Class 230 Battery Trains.

Landing Gear

Once the passengers and their luggage are on board, the weight of an electric plane will not change until the passengers disembark.

I suspect this gives advantages in the design of the landing gear, as it probably cycles through a narrower range of stresses, than the gear on a conventionally-powered plane.

Engine Failure

Engine failure in a twin-engined aircraft is every pilot’s nightmare and speaking from experience, there is no better moment in a flight in a piston-engined twin, than when the gear is raised and the plane is safely in the climb.

The Aviation International News article says this about controlling engine failures.

If power is lost in one wingtip-motor, the opposite motor will reduce power to prevent asymmetric thrust from causing a loss of control, while the rear motor can provide enough power to keep the Alice flying. In fact, Alice can continue a takeoff with loss of both tip thrusters at V2, according to Bar-Yohay.

This is how computer control should be used.

Take-Off And Landing Distance

The specification foe the Eiviation Alice,  does not give the take-off and landing distances, but it does give the approach speed as 100 knots.

The Eiviation Alice is replacing Cessna 401 aircraft at Cape-Air, so it must have a better performance.

The figures for the Cessna are.

Until, I’m told otherwise, I suspect that the Eviation Alice could use most seven-hundred metre runways, with a good surface.

Take Off Accidents

A lot of air accidents happen on take-off, when the plane is fully loaded with passengers and fuel and the engines are giving out maximum power. If the plane should crash, there is usually a large fire.

There have been fires in lithium=ion batteries in the past, but you don’t hear of hundreds of electric cars going up in smoke.

I would certainly like to see what Eviation are saying about the performance of Alice aircraft in an abandoned take-off, or one where an aircraft hits something large, that shouldn’t be there,  on the runway,. Thankfully, the latter doesn’t happen often, but read about the Tenerife Airport Disaster in 1977.

Fly-By-Wire

Fly-by-wire would not normally be expected on an aircraft of this size. But the Aviation Internation News article says the following.

  • The propellers can be managed using pitch and rpm to reduce noise.
  • Turbulence can be smoothed out.
  • Differential thrust can be applied to the two wing engines for crosswind landings.
  • The battery system can be fully controlled in sixteen strands to bring a high level of redundancy.
  • Autoland can be added.

This is a commuter aircraft with all the flight control features of a full size airliner, that has been designed to be flown by a dumb well-programmed computer.

Those that have designed advanced fighter aircraft would certainly approve.

Happy Landings

In the Wikpedia entry for the Eviation Alice, this is said.

It will be built with existing technology, including a composite airframe, distributed propulsion with Siemens electric engines and Honeywell flight control systems, including automatic landing.

The approach speed is also stated on the plane’s specification to be a very reasonable and pilot-friendly; 100 knots.

Once, I flew an approach in a Piper Arrow into Dublin Airport faster than 100 knots as Air Traffic Control, said there was a Jumbo on my tail and could I hurry up! They then asked if I could clear the runway fast, which I did, to be greeted by “We’ll give you ten out of ten for that!” The Irish are gloriously different!

Under Fly-By-Wire, I said this was possible.

Differential thrust can be applied to the two wing engines for crosswind landings.

This I like, as I was not good at crosswind landings.

Once, I landed my Cessna 340 in very heavy rain and strong crosswinds at Cardiff Airport. I landed safely, but it was lucky I was wearing appropriately-coloured underwear.

Cost Of Ownership And Operation

The Aviation International News article gives full details.

The Future

The one thing that can be said about the design of electric planes, is that the batteries will hold more power for a given weight in a few years.

In addition.

  • Composite structures will get lighter and stronger.
  • Aerodynamics of the air-frame and the propellers will get better and more efficient.
  • Fly-by-wire will use better algorithms and add more features.

Range and/or payload will increase.

I also think that, if they can be almost silent, then they could fly very different routes and perhaps even use runways reserved for electric aircraft.

Conclusion

This project might appear to be a total fantasy, but having flown over a thousand hours in a small twin-engined aircraft, I can see where Eviation are coming from.

  • They have also convinced Cape-Air, top class suppliers like BendixKing, Hartzell, Honeywell and Siemens to be part of the project.
  • If nothing else, Eviation have proven, that they can design and build a nine-seat commuter aircraft.

I feel, I can look forward one day to flying in an electric aircraft. Even if it is not the Eviation Alice.

Aircraft like Alice will revolutionise aviation, for distances up to perhaps two thousand miles.

June 19, 2019 Posted by | Transport | , , , | 4 Comments