If I only had a crystal ball !

How about traditional that goes up like a rocket with 4 kilos of accus alone ?

Some updates on this.

Eletravia2 is 5 times heavier empty than HIPPI.

http://www.electravia.fr/ELIGHT2Eng.php

Last minute changes for the hyperlite solar/electric ac called Hippiäinen ( Gold Crest ).

This flies at 10 fold power to wight ratio over the 25 kilo Musculair II; http://de.wikipedia.org/wiki/Musculair

Anyone interested as a co-worker on this ?

Idea would be to first fly this on solar power alone ( thus no batteries ) for research or just with batteries ( no solar cells ) for fun.

I also have a 140 seater 120 m spanning plane design ( on the screen ) with double the power to weight ratio per passenger compared to Hippi…intention is to fly at FL750 at Mach 0.5 ( like the Perlan glider at FL900 ). I don’t think I can manage this all alone. I call the bigger plane a Solar Eagle.

Here is the “ultimate” tuning for this 5000 usd aeroplane/motorglider.

Slight tuning on this “endless solar energy” using + direct solar take off capable craft.

Here is the “ultimate” tuning for this 5000 usd aeroplane/motorglider.

This is able to take off with direct solar energy.

Would this http://svsponline.co.uk/Mountain-High-Oxygen-Systems/ and this do it for a system http://www.ebay.com/itm/NEW-Portable-Mini-Air-Compressor-Electric-Tire-Infaltor-Pump-12-Volt-Car-12V-PSI-/400484008226 in a 45 kts tail wind the longest leg on Atlantic is doable in 6 hrs with Hippi at 7-8 km.

Some advancement. I have a question can air pressure be brought to 1.5 km altitude level in 7 km using just prop wash ? Plane is cruising at 6 times more power to weight ratio than Solar Impulse ( close to same wing loading ) so I could also implement a compressor if I need one.

This might interest some. Solar Challenger had 23 m2 of solar panels that worked on 16.5% efficiency which weighed 30 kilos IRC. Today the efficiency is 22.8 % and small craft can have 3 kilos panels to beat the performance of SC ie the panels weigh 90% less. MC-30 Luciole holds one FAI record with 51 km electric flight.

Here is the latest version of this..with 10 kw ( max ) electric engine…and constant output need is 2-3 kw in level flight.

Here Moggy C !

3.1 grams 74 x 150 mm cell with 3.6 volts.

http://www.scientificsonline.com/solar-cells-thin-film.html

So 0.011 m2 gives 3.6 volts !?

327 volts / sqm ?

In other words 280 grams for a sqm and thus with 20% efficiency 270 watts per 1 m2 at optimal conditions.

My craft could thus have 2.8 kW power at best conditions. Which is 6 times more than muscle powered do at best for 1 hour or so.

Considering that SI does 70 km/h at 7 kW and weighs 1600 kgs..my craft ought to have an outstanding climb rate as well with 4 times better power to weight ratio ( in optimal ie. similar conditions as SI ).

They integrated them to wingformers to be the surface in Solar Impulse..this AC is 60 kilos…and you need no gas to carry around. Objective is to fly only in daylite ( unlike SI ).

Out of interest, are solar panels (photovoltaic) particularly light these days?

Moggy

Problem with kinda threads is that they get closed fast.

Here is some humour to it; http://www.youtube.com/watch?v=SN74T2v6Hg8&feature=related

Anyway I firmly belive that it is possible to fly with alternate energy plane with 6 people from point A to B at 150 km/h around 500-600 km in 10 years time.

😉

If not sooner; http://en.wikipedia.org/wiki/Electric_aircraft

G4 is 4 seater; http://www.youtube.com/watch?v=fNn_9xRxWro

takes 4 people 200 miles on a single charge; http://www.popsci.com/bown/2011/product/pipistrel-taurus-g4

Here is my latest totally solar powered alternative aircraft ( electric start but solar cruise ).

3D modelled in Slovenia.

Problem with kinda threads is that they get closed fast.

Here is some humour to it; http://www.youtube.com/watch?v=SN74T2v6Hg8&feature=related

Anyway I firmly belive that it is possible to fly with alternate energy plane with 6 people from point A to B at 150 km/h around 500-600 km in 10 years time.

😉

If not sooner; http://en.wikipedia.org/wiki/Electric_aircraft

G4 is 4 seater; http://www.youtube.com/watch?v=fNn_9xRxWro

takes 4 people 200 miles on a single charge; http://www.popsci.com/bown/2011/product/pipistrel-taurus-g4

Where this all leads ?

I mean the only way to fly with weak power fast is low drag and lite weight of the ac.

You can easily make the planes lighter when they only need to go 200-250 km/h. But you ought to get 20-26 kg/m2 the wing loading to fly at high with pedalling power…and you need electric power first to get there.

This could at least slow the ending of the oil and gas if substitute ways to travel were introduced in large scale.

Aerodynamics research of the slow flight seemed to have ended in 1963 on the FX 63-137 foil. I managed to get much better figures on my own foil design in both lower drag and higher lift with 17% thickness. It took me 2 months on a XFRL5 program at home.

New innovations on the conceptual level are also needed I presume.

Aero Ae-45 seems to be the only aircraft than can reach with 3 people extra seats to the 787 Dreamliner 100 pmpg level today; http://en.wikipedia.org/wiki/Aero_Ae-45 and http://www.flugzeuginfo.net/acdata_php/acdata_ae45_en.php

Thanks for your quick answer Garry !

You charge the batteries in a charger on the ground…and via solar power above the clouds during day lite !

For nite flying you’d need an extra portion of the day lite saved energy…if possibly able to pedal the plane few hours before the sun sets ( or use the thermals like sail planes do ). Othervise…no nite flying.

There is a song in finnish..nuclear power is harmless only here ( by Eput..here are the words too; http://www.youtube.com/watch?v=bogkZNz1ag4 ).

Plastic can be substituted with renewable materials like plywood and carbon to an extent with new kinda glues like Masterbond and T88 etc.

rgds,

Juke

You mention electric trains and pre charged batteries for the aircraft but how do you charge the batteries?

You mention pedal power but you’d have to generate more power pedalling that it would take to power the aeroplane as some gets lost in transition.

Solar power is no good in the dark, obviously and some parts of the World get many months of darkness and those that live near the equator always get twelve hours of darkness a day.

Electric power is often a falisy..for example people thing they are saving the planet by plugging in an electric car but down the line a Power Station burns fossil fuel to generate that electricity and because it has to go through stages, it is more fuel burnt to produce the energy than if the car just burned it in the first place.

Sure is a tricky one…the one saviour is nuclear power, unfortunately although it could produce all the electric needed to charge batteries, it is very dangerous.

Maybe hydrogen has a future, but it’s likely that different uses of power will need different solutions rather the the one does all of fossil fuel technology.

Other problem too is finding an alternate to plastic, even if it does get recycled it needs fossil fuel to re process and much is lost anyway meaning you can only slow the usage up not stop it.