Ah, I see. So, when more lift is needed, they use the inner motors. For
cruise, they want speed and less lift. I wonder if they can do away with
flaps ? Really fascinating possibilities with the flexibility that
electric motors bring.
Peri
------ Original Message ------
From: "paul dove" <[email protected]>
To: "Peri Hartman" <[email protected]>; "Electric Vehicle Discussion
List" <[email protected]>
Sent: 11-Nov-19 8:53:50 AM
Subject: Re: [EVDL] EVLN: NASA X-57 Maxwell e-plane w/ 14 e-motors> fly
in 2020
Estimated 100 mile range 1 hour flying time. The motors between the two ends
are for takeoff and landing. The two end motors are for cruise. They mount on
top of the wings for better lift. It’s it just to test concepts.
Sent from my iPhone
On Nov 11, 2019, at 9:13 AM, Peri Hartman via EV <[email protected]> wrote:
Better altitude compared to small ICE planes, which typically max out around
11 or 12,000 feet due to lack of oxygen. No mention of range.
Apparently it is more efficient to have a line of small propellers than a
single large one, as shown in this rendering. Obviously not practical with a
single ICE. Does anyone know why it is better ?
Peri
------ Original Message ------
From: "brucedp5 via EV" <[email protected]>
To: [email protected]
Cc: "brucedp5" <[email protected]>
Sent: 10-Nov-19 7:23:53 PM
Subject: [EVDL] EVLN: NASA X-57 Maxwell e-plane w/ 14 e-motors> fly in 2020
https://www.msn.com/en-nz/news/techandscience/nasa-unveils-early-version-of-all-electric-plane/ar-BBWw9cI?li=BBqdg4K
NASA unveils early version of all-electric plane
November 10, 2019
[images / © Other,Getty,Reuters/NASA
https://img-s-msn-com.akamaized.net/tenant/amp/entityid/BBWvKJ1.img
The plane is called the X-57 'Maxwell'
https://img-s-msn-com.akamaized.net/tenant/amp/entityid/BBWvSmZ.img
a person on the machine: The plane has been under development since 2015.
Pic: Reuters/NASA
The plane has been under development since 2015
https://img-s-msn-com.akamaized.net/tenant/amp/entityid/BBWuT2u.img
a group of people sitting at a table: Batteries for the plane.
Batteries for the plane
]
The plane is called the X-57 'Maxwell'. Pic: Reuters/NASA
NASA has unveiled an all-electric plane which it has been developing since
2015.
The experimental aircraft, or X-plane, has been designated X-57, and will be
known as "Maxwell" for short.
It could be ready for its first test flight from Edwards Air Force Base in
the desert of southern California next year.
The X-57 has been adapted from an Italian-made Tecnam P2006T twin-engine
propeller plane but with the traditional combustion engines replaced with
electric cruise motors.
There are 14 electric motors powered by specially designed lithium-ion
batteries, the same technology used in mobile phones and electric cars.
According to NASA, using an existing aircraft design will allow data from
the baseline model in its traditional configuration to be compared to data
produced by the same model powered using electric propulsion.
The US space agency has developed many experimental aircraft, including the
bullet-shaped Bell X-1 that first broke the sound barrier, and the X-15
rocket plane flown by Neil Armstrong before he joined the Apollo team.
The Maxwell is its first crewed X-plane in two decades.
NASA has also shown off a newly built simulator which enables pilots and
engineers to get a sense of what it might be like to fly the X-57.
The aircraft is expected to have a maximum operational altitude of 14,000ft
or 4.2km, well below the 45,000ft or 13km of commercial airliners.
NASA hopes the project will help develop the technology to a standard which
could be adapted by commercial manufacturers to meet government standards.
These standards will include how airworthy and safe the plane is, as well as
how energy efficient and noisy it could be.
Brent Cobleigh, a project manager at NASA's flight research centre, told
Reuters: "We're focusing on things that can help the whole industry, not
just one company.
"Our target right now is to fly this airplane in late 2020."
[© msn.com]
+
https://www.msn.com/en-us/news/technology/drones-will-swarm-our-skies-when-these-3-things-happen/ar-BBWxUgP
Drones will swarm our skies when these 3 things happen
20191106 ... mainstream models like the DJI Mavic. This one is Boeing's
Cargo Air Vehicle ... Uber Eats meal delivery drone prototype is designed to
take off vertically then pivot its propellers for more efficient forward
flight ...
https://img-s-msn-com.akamaized.net/tenant/amp/entityid/BBWxUel.img
For EVLN EV-newswire posts use:
http://www.evdl.org/archive/
{brucedp.neocities.org}
--
Sent from: http://electric-vehicle-discussion-list.413529.n4.nabble.com/
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