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What do you think about "e-soaring"?

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opcod

Well-Known Member
Joined
Aug 28, 2010
Messages
77
Location
Canada
The main and easy method to know is the asw27 with the 2 jet engines. No matter what type, at 131lbs you takeoff. And the asw27 is quite heavy by itself. Also, i<m not saying the glider will be efficient. But mission is takeoff to max 2k then glide back home. If flight line is empty and good condition.. unscrew the fan and take off by the tow. But it should cut the ratio not much more than a tricyle wheel system.
/Martin, On the wingspan.. yes, a 17m version possible ?
 

John.Roo

Well-Known Member
Joined
Oct 8, 2013
Messages
464
Location
Letohrad / Czech Republic
I beleive that with 2 jet engines with 131 lbs / 600 N thrust you probably can takeoff. ASW 27 MTOM is 500 kg, but EW starts from 245 kg. It is not really "ultralight" glider, but you will probably not use water ballast in case of self launch tests :)

For 17 m version we have finished wing extesion models and I am planning how to produce the set of moulds for first "flight testing" set.
Phoenix all versions.jpg
Idea is to have possibility to change the wing extensions according to "flight mission" :)
- 10,3 m span - no extensions - parking in hangar
- 10,6 m span - short winglets - higher wing load, high maneouvrability
- 15,0 m span - long economical cruising, aerotowing
- 17,0 m span - soaring
 

John.Roo

Well-Known Member
Joined
Oct 8, 2013
Messages
464
Location
Letohrad / Czech Republic
Birdy 120 kg...
Interesting project.
From the Aerokurier article seems that expected price for a KIT is 50 000 EUR (incl. electric propulsion).
Technically I am only a bit worry about reliability of the long shaft between prop and electric motor, but true is that power is only 12-16 kW.

By the way...
It is interesting that in Germany they measure EW of electric airplanes in 120 kg category without battery :)

1606370185310.png
 

John.Roo

Well-Known Member
Joined
Oct 8, 2013
Messages
464
Location
Letohrad / Czech Republic
Just thinking.... (again about prices)
50 000 EUR for KIT of Birdy (electric self launch)
45 200 EUR price of SWIFT (electric self launch)
89 500 EUR basic price of Archaeopteryx (electric version)
65 000 EUR Silent Electro (price info from 2013)
? GP gliders (electric self launch)
? ATOS Wing
...
They all are interesting (performance, design, idea, weight...).
But can we call that "affordable? :)
 

Speedboat100

Well-Known Member
Joined
Nov 8, 2018
Messages
1,626
Location
Europe
Just thinking.... (again about prices)
50 000 EUR for KIT of Birdy (electric self launch)
45 200 EUR price of SWIFT (electric self launch)
89 500 EUR basic price of Archaeopteryx (electric version)
65 000 EUR Silent Electro (price info from 2013)
? GP gliders (electric self launch)
? ATOS Wing
...
They all are interesting (performance, design, idea, weight...).
But can we call that "affordable? :)

Wouldn't it about time to get an affordable self launch electric ac ?
 

jedi

Well-Known Member
Joined
Aug 8, 2009
Messages
2,216
Location
Sahuarita Arizona, Renton Washington, USA
Wouldn't it about time to get an affordable self launch electric ac ?
That would be an electric paramotor. They are for sale and are roadable too. Very few pilots will admit that there are roadable aircraft available. You can walk down the street with one or you can carry it in the boot of a vehicle. You could even modify a wheel barrel to make a more useful roadable.
 
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