VTOL On Demand Mobility

Zoo Tycoon said:
martinbayer said:
www.bbc.com

Elizabeth Holmes: Has the Theranos scandal changed Silicon Valley?

Could a Theranos scandal happen again or has Silicon Valley learnt its lesson?
www.bbc.com www.bbc.com

Evtol industry…….'fake it until you make it' culture is still alive and well ……. sooner or later ….too many inexperienced startups trying to build quite advanced aircraft designs……. next few years there will be a bloodbath……..A disaster ….. the most fundamental was a fantasy about the economics ……..predicted impossibly low empty weights…….unattainable performance and range predictions,…………accomplish all of this in record setting time.
Click to expand...

In the near future prison’s (State Pen’s) will no longer have their inmates stitching mail bags, or breaking rocks, instead they’ll be hosting innovation hubs, delivering TED talks and running techno creativity centres. Ah for these modern times.
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Since so many of these are obvious scams, their fundraising is more complicated. This might be handy for reference in general too.
View: https://www.youtube.com/watch?v=w6kW3sys79w
 
www.telecomtv.com

Flying taxis... Will investors go first class? Or be taken for a short, expensive ride?

Big money being ploughed into the nascent sector, which is set to be worth US$1.4 trillion by 2040Cross-industry partnerships forming with mobile telcos provid…
www.telecomtv.com www.telecomtv.com

Aviation Week had an interesting article 2 weeks ago where it speculated that up to 75% of these start up companies could fail and the remaining 25% would have a hard time attracting funding because all the investors who got burned won't want to sink another penny into the evtol market.
 
At the end, there will be more money burned here than was coal on the Pan-American railroad. Speak about low carbon emissions!!
 
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TomcatViP said:
At the end, there will be more money burned here than coal on the Pan-American railroad. Speak about low carbon emissions!!
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it reminds me, where are all the SST's we were supposed to be zooming around in by now?, you know, breakfast in London, Lunch in San Francisco.

I'm afraid Uber without a human driver is far more likely to win this 'race'. Stick in a robot dog in case your too lazy to get of the sofa, and we are done here.
 
Moshier Technologies AURORA 400 VTOL Aircraft Project 1986
 

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Eve Urban Air Mobility announces “two major Australian deals” at Singapore Air Show “of orders up to 90 eVTOLs” – Urban Air Mobility News

www.urbanairmobilitynews.com www.urbanairmobilitynews.com

Eve Prepares to Fly Full-Scale eVTOL Prototype As Order Book Swells

Operators in Australia this week made agreements with the manufacturer that could lead to 90 more of its eVTOL aircraft entering service from 2026.
www.futureflight.aero www.futureflight.aero

Considering that Eve is a subsidiary of Embraer, they have a good chance of navigating the hurdles of certification and flight testing and getting this thing into service. By aiming for a late 2020's EIS, they can lean from the mistakes of others and take advantage of emerging technologies to leapfrog the competition.
 
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evtol.com

Joby’s eVTOL prototype involved in accident during flight testing

Joby Aviation said one of its eVTOL aircraft prototypes was involved in an accident yesterday during a flight test in California.
evtol.com evtol.com

Hope it wasn't serious. :(

If the NTSB is investigating there must have been some substantial damage.


Edit : Looks like it may have been a high speed breakup or loss of control. So a total loss. Shame :eek:

newatlas.com

Joby crashes one of its two eVTOL prototypes during high-speed testing

Joby Aviation has announced an accident during flight testing of its market-leading eVTOL aircraft prototype. Flight tracking data appears to show the aircraft was being pushed over 270 mph (435 km/h), well beyond its advertised top speed of 200 mph (322 km/h).
newatlas.com newatlas.com

news.yahoo.com

Flying-Taxi Startup Joby Slumps After Test-Flight Accident

(Bloomberg) -- Joby Aviation Inc., a startup vying to be among the first to fly a new class of electric air taxis, said one of its aircraft was involved in an accident, sending the shares tumbling.Most Read from BloombergBlinken Offers Lavrov Meeting as Tensions Spike: Ukraine UpdateElon Musk...
news.yahoo.com news.yahoo.com
 
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www.vertiia.com

Home | AMSL Aero Pty Ltd

www.vertiia.com www.vertiia.com

Copy%20of%2022_JAN_2020_FULL%20SCALE%20CONCEPT%202.png
 
FAA will slow roll Joby. Look at the implications for AW-609 after a high speed failure, and their was a like platform flying in the DoD.
 
electrek.co

AutoFlight shares extended footage of 'Prosperity I' eVTOL air taxi, including takeoff and landing

Following teaser footage of its "Prosperity I" in January, AutoFlight has released a video showing its eVTOL air-taxi takeoff and land.
electrek.co electrek.co

View: https://www.youtube.com/watch?v=lSQw2ORhOrw&ab_channel=AutoFlight


Is it just me, or does the landing footage at 4:16 look like it's CGI ? Also the takeoff and vertical climb footage at 2:11 seems a little odd. Am I going crazy, or does it looks like some of this footage is faked ? o_O

Take a look at this footage of the Archer. This is how a evtol is supposed to move on takeoff. Notice how the other aircraft is steady as a rock in an unnatural way ?

View: https://www.youtube.com/watch?v=lN0MK2PHgEo
 
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Yes, the touchdown sequence is odd. The rest seems legit (no wind, no Payload, minimal weight (that's how an eggshell is supposed to fly)).
 
Propellers distributed longitudinally provide much better pitch stability/control in contrast to Archer's configuration.

Autoflight's vertical lift system may not be as eye pleasing, but it is effective from a safety/reliability perspective and 8 rather large propellers enable a low disc loading.

In general: The advantage of a seperate lift-thrust configuration (SLT) is its inherent simplicity, which has a direct effect on reliability.
- No need for variable pitch propellers
- No propeller tilt mechanism
- No conversion during transition

Last but not least: The thrust-motor could be easily substituted with an internal combustion engine, which would enable long range/endurance, without major changes to the basic configuration. The simplest way to put a hybrid configuration into action.
 
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Quite an informative article/interview on the AMSL Vertiia:

newatlas.com

Unique Aussie box-wing eVTOL promises radical efficiency and huge range

Australian company AMSL Aero is preparing to start flight tests on what it claims will be the world's most efficient eVTOL design, and one of the most affordable. This box-wing beauty, the Vertiia, will travel up to 1,000 km (620 miles) on a tank of hydrogen, carrying five people or 500 kg (1,100…
newatlas.com newatlas.com
 
Oh geez, flying hydrogen tanks with electric engines, what could possibly go wrong ?
Ian Malcolm, as per my signature, wouldn't like this.

"electro-hydrogen flying taxis ? Yeah: oooh, aaah, that's how it always starts. Then later there's crashing, running, and... screaming." LMAO
 
Archibald said:
Oh geez, flying hydrogen tanks with electric engines, what could possibly go wrong ?
Ian Malcolm, as per my signature, wouldn't like this.

"electro-hydrogen flying taxis ? Yeah: oooh, aaah, that's how it always starts. Then later there's crashing, running, and... screaming." LMAO
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dont forget to build it just heavy enough to be certified.....
 
VTOLicious said:
Propellers distributed longitudinally provide much better pitch stability/control in contrast to Archer's configuration.

Autoflight's vertical lift system may not be as eye pleasing, but it is effective from a safety/reliability perspective and 8 rather large propellers enable a low disc loading.

In general: The advantage of a seperate lift-thrust configuration (SLT) is its inherent simplicity, which has a direct effect on reliability.
- No need for variable pitch propellers
- No propeller tilt mechanism
- No conversion during transition

Last but not least: The thrust-motor could be easily substituted with an internal combustion engine, which would enable long range/endurance, without major changes to the basic configuration. The simplest way to put a hybrid configuration into action.
Click to expand...

Don't forget that smaller rotors means a higher impact on rotor balance from accelerations. Wind loads, rate of climb or descent, yaw and bank will affect more a smaller rotor than a larger one.
So, if in theory the distribution of lift is a benefit for stabity, in effect it makes the aircraft less robust toward real flight conditions and one that loose quicker its efficiency. One notable aspect is vertical flight and descent where the smaller, more rigid, props and rotor system are more susceptible to recirculating flows and assymetrical ground effect.
 
www.avweb.com

How Will The Joby Mishap Affect The Company's Certification Timeline?

What impact will flight-test mishap have on Joby?
www.avweb.com www.avweb.com

evtol.com

How Joby’s crash might affect its path to certification

After crashing its prototype nearly two weeks ago, eVTOL.com spoke to an expert to find out how Joby's accident might affect its path to certification.
evtol.com evtol.com

Considering that this aircraft was operating at the extreme edge of its performance envelope, the basic design of the Joby is sound. I do wonder if the aircraft could have been saved had there been a pilot at the controls.
 
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I do wonder if it could have reached anything close to that speed has it been built to be manned....
 
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Great news if this were true, instead of relaying on the old swiveling nozzles like the Harrier, and Yak 141 or ducted fan solutions like the F-35B. maybe we'll see no compromise VTOL fighters in the future.

www.greencarcongress.com

CoFlow Jet signs JOA with NASA to commercialize deflected slip-stream technology for eV/STOL

CoFlow Jet, LLC, an engineering and technology company specializing in active flow control using coflow jet (CFJ) technology for aerospace applications, has entered a Joint Ownership Agreement (JOA) with NASA to commercialize the deflected slip-stream (DSS) technology enabled by co-flow jet flow...
www.greencarcongress.com
 
www.flyingmag.com

NTSB: Joby Aviation Air Taxi Prototype ‘Substantially Damaged’ in Crash

A National Transportation Safety Board preliminary report says Joby’s electric vertical takeoff and landing (eVTOL) aircraft ‘experienced a component failure.’
www.flyingmag.com www.flyingmag.com

evtol.com

NTSB: Joby experienced a ‘component failure’ during February crash

Joby Aviation’s first full-scale eVTOL prototype experienced a “component failure” that resulted in “substantial damage” when it crashed last month.
evtol.com evtol.com
 

FAA and United Kingdom's CAA issue statement that recognizes potential of eVTOL aircraft​


March 4, 2022

The U.S. and UK civil aviation authorities are engaged in a range of bilateral and multilateral discussions focused on facilitating certification and validating new eVTOL aircraft, production, and continued airworthiness, AviationPros reports.


Faa E 6220d868c2075




WASHINGTON - The Federal Aviation Administration (FAA) and the United Kingdom Civil Aviation Authority recognize the potential of electric vertical take-off and landing (eVTOL) and other Advanced Air Mobility (AAM) aircraft to significantly benefit the public. To support future eVTOL aircraft development and operation, the U.S. and UK civil aviation authorities are engaged in a range of bilateral and multilateral discussions focused on facilitating certification and validating new eVTOL aircraft, production, continued airworthiness, operations, and personnel licensing, AviationPros reports.
The Military & Aerospace Electronics take:

4 March 2022 - As these aircraft enter into the aviation ecosystem, both agencies recognize that they must continue to maintain the high safety standards that the public expects. To streamline and expedite integration, this technology should use existing regulatory frameworks on which that strong safety record is founded.

Both regulators recognize AAM is a collection of new and emerging technologies in the existing aviation system. Both authorities have a strong history of collaborating in aircraft certification, airspace integration, operations, and infrastructure, which lead to a safer, more sustainable sector.
Click to expand...

www.militaryaerospace.com

FAA and United Kingdom's CAA issue statement that recognizes potential of eVTOL aircraft

The U.S. and UK civil aviation authorities are engaged in a range of bilateral and multilateral discussions focused on facilitating certification and validating new eVTOL aircraft...
www.militaryaerospace.com www.militaryaerospace.com
 
shin_getter said:
2nd iteration of beta goes to a simple lift cruise

Interesting interview inside on a number of design decisions from battery location, aerodynamics, configurations, and so on.
View: https://www.youtube.com/watch?v=7HKD5WsTqOQ

Cargo, medical and government as first target....

CEO as chief flight test pilot ....
Click to expand...

Hmm, one year later still no transition? I had high hopes on Beta. Does anyone know what's the problem?
 
VTOLicious said:
shin_getter said:
2nd iteration of beta goes to a simple lift cruise

Interesting interview inside on a number of design decisions from battery location, aerodynamics, configurations, and so on.
View: https://www.youtube.com/watch?v=7HKD5WsTqOQ

Cargo, medical and government as first target....

CEO as chief flight test pilot ....
Click to expand...

Hmm, one year later still no transition? I had high hopes on Beta. Does anyone know what's the problem?
Click to expand...
My suspicion is that the rotors are not as efficient as they seemed in simulation. So there is work on how to make effective rotors that do not incur significant drag. That is my hunch using the scientific method of "Gosh, those rotors are sure small."
 
yasotay said:
VTOLicious said:
shin_getter said:
2nd iteration of beta goes to a simple lift cruise

Interesting interview inside on a number of design decisions from battery location, aerodynamics, configurations, and so on.
View: https://www.youtube.com/watch?v=7HKD5WsTqOQ

Cargo, medical and government as first target....

CEO as chief flight test pilot ....
Click to expand...

Hmm, one year later still no transition? I had high hopes on Beta. Does anyone know what's the problem?
Click to expand...
My suspicion is that the rotors are not as efficient as they seemed in simulation. So there is work on how to make effective rotors that do not incur significant drag. That is my hunch using the scientific method of "Gosh, those rotors are sure small."
Click to expand...

When I look at that top view it seems to me that the rotors have sufficient disc area.
But you're right, their shape is very unusual and might be the reason why we didn’t see a video of hover or transition yet... In addition to efficiency, noise is also a factor that should not be neglected.
 

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Transition has always been the massive step for any Vtol configuration. All sorts of bad things related to details within the configuration can go wrong. The normal challenge is a transition with a bit of yaw relative to a cross wind. Quite a few test pilots have given their lives in trying to make various contraptions go from zero airspeed to wing borne flight and back again.
 
Is this the worlds first eVTOL aircraft?! The PKZ-1 first flew in 1918. It had one motor, 4 wooden propellers, and was powered by a cable connected to a DC generator on the ground (it was tethered). It was intended to replace observation balloons and it predates the conventional helicopter by some 20 odd years.
 

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www.barrons.com

Electric Plane Maker's Stock Plummets After Short-Seller Report

Iceberg Research called into question the technology being used by Lilium and pointed out that the market is saturated with many companies.
www.barrons.com

iceberg-research.com

Lilium NV – The Losing Horse in the eVTOL Race&nbsp

Summary of findings German company Lilium is building an electric vertical take-off and landing aircraft (eVTOL) — the Lilium Jet. Its objective is for the Jet to fly up to 155 miles. But non…
iceberg-research.com iceberg-research.com


Looks like an expose has been published showing that the Lilium Jet project is a fraud. People on this forum have been pointing that out for a long time.
 
Yes. No vertical Takeoffs and landings here. Notice that both pilots are wearing ventral parachutes.
Notice also:
- the high alpha attitude on the picture.
- the featureless cockpit
- the badly executed sheet metal console holding the flight display (normal (usual) pilot side)
 

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