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02-04-2015, 11:48 | #1 |
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Siemens: World-record electric motor for aircraft
Siemens researchers have developed a new type of electric motor that, with a weight of just 50 kilograms, delivers a continuous output of about 260 kilowatts – five times more than comparable drive systems. The motor has been specially designed for use in aircraft. Thanks to its record-setting power-to-weight ratio, larger aircraft with takeoff weights of up to two tons will now be able to use electric drives for the first time. To implement the world-record motor, Siemens' experts scrutinized all the components of previous motors and optimized them up to their technical limits. New simulation techniques and sophisticated lightweight construction enabled the drive system to achieve a unique weight-to-performance ratio of five kilowatts (kW) per kilogram (kg). The electric motors of comparable strength that are used in industrial applications deliver less than one kW per kg. The performance of the drive systems used in electric vehicles is about two kW per kg. Since the new motor delivers its record-setting performance at rotational speeds of just 2,500 revolutions per minute, it can drive propellers directly, without the use of a transmission.
http://www.siemens.com/press/en/feat...or.php?content[]=Corp http://www.tu.no/industri/2015/04/02...d-rekordytelse |
02-04-2015, 13:33 | #2 |
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Re: Siemens: World-record electric motor for aircraft
Ja, og så må man ha to tonn batterier for å få til en halvtimes flytid...eller noe sånt
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15-05-2015, 09:11 | #3 |
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Re: Siemens: World-record electric motor for aircraft
Man sparer iallefall vekten av brennstoff, Siemens pästär at gearboks er heller ikke nödvendig. Til gode (for et 5-pax fly ?) har man derved minst 800-1,200 kg, delta motorvekt innregnet ... Her trengs det en god O2-H2 til H2O e-celle. Samt noen avanserte batterier ? Videre trengs det nye piezo-materialer (som omgjör luft-friksjon til Volt) til vinge- og skrog-overflater ?
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15-05-2015, 12:50 | #4 |
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Re: Siemens: World-record electric motor for aircraft
Et 5-pax fly (Cessna 421 for å ta i litt, men vi kan også si en Seneca, som er et seksseters fly) vil med dagens teknologi kreve batterier som er myyye tyngre enn 8-1200 kg. Tar man bort begge motorene og fuel sparer man kanskje rundt 800 kg, men man vil trenge en anselig mengde batterier for å kunne fly like lenge som med fulle tanker. Det er enda lenge til brukbare batterifly - og da mener jeg brukbar som i lik eller bedre rekkevidde og performance som med dagens motorer.
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15-05-2015, 14:13 | #5 |
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Re: Siemens: World-record electric motor for aircraft
En e-celle (Pile ā Combustible) produserer ström til de nye elektriske motorene etter bruks-behov, la oss si e-cellen dimensjoneres til cruise-forhold, mens batteriene tar händ om sikkerheten og overbruk v/akselerasjoner osv, samme som for en Tesla - oder ?
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15-05-2015, 22:54 | #6 |
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Re: Siemens: World-record electric motor for aircraft
Går vel med en del kopper kaffe for å få ladet dette opp igjen på bakken vil jeg tro..
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18-05-2015, 08:01 | #7 | |
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Re: Siemens: World-record electric motor for aircraft
Quote:
https://zedie.wordpress.com/2015/05/...imes-of-india/ |
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04-07-2016, 17:04 | #8 |
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Re: Siemens: World-record electric motor for aircraft
World-record electric motor makes first flight
Munich, 2016-Jul-04 Technical milestone: maiden flight of an electric aircraft with a 260-kilowatt power output Siemens motor powers Extra 330LE aerobatic airplane in near silence Technology to be integrated into development of hybrid-electric aircraft in cooperation with Airbus http://www.siemens.com/press/en/feat...or.php?content[]=Corp |
25-01-2017, 18:38 | #9 | |
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Re: Siemens: World-record electric motor for aircraft
Quote:
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