A horse drawn carriage would do it for a handful of carrots and a rub on the snout.
Nick > On 16 May 2016, at 8:20 AM, Derek Ruddock <[email protected]> wrote: > > 10 litres for 2.2km? > That would make the fuel consumption 454 litres per 100km. > Makes a LandBruiser look positively frugal. > > From: Aus-soaring [mailto:[email protected]] On Behalf > Of Mike Borgelt > Sent: Sunday, 15 May 2016 5:45 PM > To: Discussion of issues relating to Soaring in Australia. > Subject: Re: [Aus-soaring] More on hoverboard > > Bob, > > I don't know where the 250HP each engine comes from. > > I'll post this analysis again: > > Jet engines aren't usually quoted as being of a certain horsepower. > > It seems likely the device has 4 x 40 Kg(392N) THRUST engines (if it has a > single engine out capability this would be about right. One not huge bloke, > the device and some fuel). The only horsepower being developed in the hover > is in the exhaust stream. > > From www.amtjets.com the Titan engine has 40Kg thrust. Mass flow is quoted > at 0.66 Kg/sec . Note that this is over 0.5 cubic meters of air a second. > > To get 40 Kg thrust this equates to an exhaust velocity of 600 meters/sec. > The POWER in the exhaust stream is then around 120 kilowatts or about 160HP. > > 4 engines = 640 HP. He's likely at 75% thrust in the hover though. > > The power being delivered to Frankie's device in hover is ZERO. Power > delivered = velocity x thrust. > > Fuel consumption of the titan is quoted at just over 1 Kg/Minute. So for 4 at > say 80% thrust in forward flight around 3.2 Kg/minute or 4 litres/minute. > > He says he didn't exceed 55mph on the Guiness record flight. Say he averaged > 60 kph. He flew just over 2.2 km so it would take 2 to 2.5 minutes. Say 10 > litres of fuel. Easy. > > > Mike > > > > > At 05:22 PM 5/15/2016, you wrote: > > Claimed 4 engines at 250hp each..... just not possible from jets of that > size.... > > possibly 250 N thrust from each. > > claims to be looking at 2 miles...... I don't believe it.... he couldn't > carry enough fuel. > > On Sun, May 15, 2016 at 1:59 PM, Mike Borgelt < > [email protected]> wrote: > > > Some more detail on the hoverboard. It has an autostab system and can > tolerate one engine out. > > http://www.theverge.com/2016/4/15/11439798/franky-zapata-racing-jet-powered-flying-hoverboard-interview > > Mike > > > > > > Borgelt Instruments - design & manufacture of quality soaring instrumentation > since 1978 > www.borgeltinstruments.com > tel:  07 4635 5784     overseas: int+61-7-4635 5784 > mob: 042835 5784                : int+61-42835 5784 > P O Box 4607, Toowoomba East, QLD 4350, Australia > > _______________________________________________ > Aus-soaring mailing list > [email protected] > http://lists.base64.com.au/listinfo/aus-soaring > > > _______________________________________________ > Aus-soaring mailing list > [email protected] > http://lists.base64.com.au/listinfo/aus-soaring > Borgelt Instruments - design & manufacture of quality soaring instrumentation > since 1978 > www.borgeltinstruments.com > tel: 07 4635 5784 overseas: int+61-7-4635 5784 > mob: 042835 5784 : int+61-42835 5784 > P O Box 4607, Toowoomba East, QLD 4350, Australia > > _______________________________________________ > Aus-soaring mailing list > [email protected] > http://lists.base64.com.au/listinfo/aus-soaring
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