Things that fly
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LockH 100 GW

- Posts: 17577
- Joined: Jul 09 2013 11:06pm
- Location: Ummm.. Started out in Victoria BC Canada, then started to move around... Oh oh.
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by LockH » Jan 06 2019 10:16am
Rolls-Royce presents the world’s fastest all-electric aircraft:
https://tech-papyrus.blogspot.com/2019/ ... SFNXWtOhZ8

ES changed my life (for the waaaaay better).
Eff. June, 2014 Phoenix Ebike Promotions
(Current ride? High speed lawn chair.)
viewtopic.php?f=3&t=57408
Phoenix Ebike Promotions conversion kit (work in progress. More drink holders, etc etc)
viewtopic.php?f=15&t=60564
Joined yer local chapter of EA yet?
(Ebikers Anonymous - Where we're all miserable failures, but the parties are hilarious...)
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Grantmac 10 kW

- Posts: 628
- Joined: Oct 22 2018 12:43pm
- Location: Victoria, BC
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by Grantmac » Jan 06 2019 2:34pm
Given that Redbull airrace courses are under 2 minutes I think having that series go electric would be an awesome idea.
RallyX is already considering it since they are all sprint races.
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Punx0r 100 GW

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- Joined: May 03 2012 8:16am
- Location: England
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by Punx0r » Jan 06 2019 3:44pm
It's wonderful to see a commitment to advancing electric flight.
Does sprinting to top speed take longer in a plane compared to a wheeled vehicle? I.e. is the burst of peak power required to be sustained for longer, leading to thermal problems with the battery and motor?
I ask because the targetted performance seems markedly less than some electric racing cars have, several in the 1000HP-1000kW region.
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Hillhater 100 GW

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- Joined: Aug 03 2010 10:33pm
- Location: Sydney ..(Hilly part !) .. Australia/ Down under !
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by Hillhater » Jan 06 2019 11:16pm
Flight performance is always dictated by (amoungst many other things)... Power and weight.
And in the case of electric aircraft, that weight is dictated by battery capacity/power ratios.
I suspect this RR design is a compromise on battery weight/discharge power, endurance, and capacity.
IE, they could have had a much more powerful drive, but the battery to support it would be disproportionately heavy.
This forum owes its existence to Justin of ebikes.ca
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Foob 1 mW

- Posts: 17
- Joined: Dec 09 2011 8:29am
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by Foob » Jan 07 2019 11:50am
It's interesting that they talk about how they've recruited a big experienced team for this internally important project, but the powerplant is just three YASA motors bolted together. I guess those things are hard to beat.