IBob Posted December 11, 2019 Share Posted December 11, 2019 https://www.theguardian.com/world/2019/dec/11/worlds-first-fully-electric-commercial-aircraft-takes-flight-in-canada 3 Link to comment Share on other sites More sharing options...
Thruster88 Posted December 11, 2019 Share Posted December 11, 2019 The Beaver is perfect for lifting a ton of batteries. 2 1 Link to comment Share on other sites More sharing options...
skippydiesel Posted December 11, 2019 Share Posted December 11, 2019 Already available - in "adult" shops. 2 Link to comment Share on other sites More sharing options...
bexrbetter Posted December 11, 2019 Share Posted December 11, 2019 Already available - in "adult" shops. Yup, this thread is apparently about aircraft I just found out, dang narn it! 3 Link to comment Share on other sites More sharing options...
Marty_d Posted December 11, 2019 Share Posted December 11, 2019 Yup, this thread is apparently about aircraft I just found out, dang narn it! I'm sure you've already got a cupboard full! 1 Link to comment Share on other sites More sharing options...
IBob Posted December 11, 2019 Author Share Posted December 11, 2019 Some footage: https://www.stuff.co.nz/travel/news/118133935/why-this-5-minute-flight-is-a-gamechanger Link to comment Share on other sites More sharing options...
Litespeed Posted December 12, 2019 Share Posted December 12, 2019 All I could think about was some back country flying- chasing beaver. A electric beaver is cool as a toy but I like a real one better. Link to comment Share on other sites More sharing options...
old man emu Posted December 12, 2019 Share Posted December 12, 2019 Do you realise that women had battery-powered tools before men did? 1 Link to comment Share on other sites More sharing options...
red750 Posted December 12, 2019 Share Posted December 12, 2019 I was going to say I knew a girl who had an electric beaver (I didn't, really). 1 Link to comment Share on other sites More sharing options...
pmccarthy Posted December 12, 2019 Share Posted December 12, 2019 It’s hard to believe they named the main character in a TV series Beaver Cleaver and they got away with it. 1 1 Link to comment Share on other sites More sharing options...
old man emu Posted December 12, 2019 Share Posted December 12, 2019 It’s hard to believe they named the main character in a TV series Beaver Cleaver and they got away with it. It's not at all hard to understand why the nickname "Beaver" would have been totally acceptable in the 1950's. It was an application of the name of a well-known advertising character to a typical childhood characteristic and in this case had the added impact of using the individual's surname. Here's how it goes: In the 1950's the Bristol-Myers had a new child-friendly character created to advertise their Ipana toothpaste. This character was a beaver, chosen because of the beaver's prominent front teeth - it is a rodent. The ads were run during children's television hours, so the character was well-known to children and young families. http://www.buckybeaver.ca/buckys_story.php The 1950's were the years that lots of Baby Boomers were in their pre-teen years, and during that time in a child's life they are losing their milk teeth and their adult teeth are coming in. The first teeth to be replaced are the two front teeth, and when they do come in, they appear disproportionately large - like a rodent's. Jerry Mathers, who played "Beaver" was born in 1949, so when the show started in 1957 he would have been eight years old, and probably just finished getting his two adult front teeth. So what we have is: Well-known advertising character + big front teeth + rhyming surname = Beaver Cleaver. "Beaver" Cleaver or Theodore Cleaver - which would you prefer to be called? 1 Link to comment Share on other sites More sharing options...
Old Koreelah Posted February 12, 2020 Share Posted February 12, 2020 Back to aeroplanes: https://www.bbc.com/future/article/20200211-the-electric-plane-leading-a-revolution Link to comment Share on other sites More sharing options...
Student Pilot Posted February 13, 2020 Share Posted February 13, 2020 It doesn't look a lot different to a Garret conversion done a few years ago in Oz, I think it still getting the guts thrashed out of it on para ops somewhere Link to comment Share on other sites More sharing options...
kgwilson Posted February 13, 2020 Share Posted February 13, 2020 These guys are on to something that will save them a fortune. Most of their flights are short hops so if they have a 5 minute battery swap the reduction in maintenance and fuel costs will be enormous as well as the quiet operation which will impress their customers and those living near their takeoff & landing areas. Link to comment Share on other sites More sharing options...
Student Pilot Posted February 13, 2020 Share Posted February 13, 2020 Wonder what the gearing on the prop is, does it rev at 2300 revs like a radial does? If it does it won't be any quieter, the noise you hear with a Beaver on takeoff is the prop tips goen supersonic not engine noise. Link to comment Share on other sites More sharing options...
Litespeed Posted February 13, 2020 Share Posted February 13, 2020 True a trade prop is very loud. But electric is well suited to new prop designs that can be substantially quieter. If they change it...,... Link to comment Share on other sites More sharing options...
kgwilson Posted February 13, 2020 Share Posted February 13, 2020 I can't imagine them using the same prop as everything with the electric setup is different and also there is now a streamlined cowl replacing that huge flat front that they had to push through the air. Almost the entire prop can produce thrust whereas before half of it was producing cooling air. Link to comment Share on other sites More sharing options...
Downunder Posted February 13, 2020 Share Posted February 13, 2020 Yes, I would imagine it to be a custom electric prop. As the electric motor would already be substantially quieter, I don't think prop noise would be high up in the design parameters. I know someone who has flown in an electric aircraft and he says the fact that the electric motor can pull max torque from zero rpm onwards is a shock. No building rpm to bring in the power, just instant hard acceleration. Link to comment Share on other sites More sharing options...
spacesailor Posted February 13, 2020 Share Posted February 13, 2020 Warmup too should be shorter ?. spacesailor 1 Link to comment Share on other sites More sharing options...
kgwilson Posted February 13, 2020 Share Posted February 13, 2020 Yep instant warmup. Link to comment Share on other sites More sharing options...
turboplanner Posted February 13, 2020 Share Posted February 13, 2020 Warmup too should be shorter ?. spacesailor Yes, half a nano second, but think about your experience around the house with electric motors that suddenly stop working, never to spin again - like hair driers, and think about all the electrical issues in the newer cars, and all those molten bitumen patches you see on the freeways these days............. Link to comment Share on other sites More sharing options...
Student Pilot Posted February 13, 2020 Share Posted February 13, 2020 Warmup too should be shorter ?. spacesailor With 985 in Beaver it used to take ages on a cold frosty morning for the oil to get to 40C, I would be still sitting purring away and the Fletcher's with their 720's were on the way to the job 1 Link to comment Share on other sites More sharing options...
turboplanner Posted February 13, 2020 Share Posted February 13, 2020 An electric motor can be designed for initial torque and maximum power rpm to suit the optimum prop for the aircraft. With the operation someone else described, and exchange battery packs, a lot of the negatives of electric "vehicles" fall away. If you're not looking for range, then range issues fall away. If you can swap batteries, then the long downtimes while charging fall away If you're not trying to design in recharging in the glide, the aircraft is less costly, less failure-prone, lighter etc. If the design is based on the Application, and not on CO2 reduction, you don't have to worry about trying to charge the batteries on solar or nuclear. Looks very exciting for all short-lead flights, and not just for Beavers. Link to comment Share on other sites More sharing options...
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