henryk
Well-Known Member
2 kG/kW =not bad !
What do you think about "e-soaring"?
- Thread starter John.Roo
- Start date
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- electric soaring
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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 ?
/Martin, On the wingspan.. yes, a 17m version possible ?
John.Roo
Well-Known Member
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.
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
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.
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
That day during morning we did glider aerotows with Phoenix and than we used free time for some fun flying - "formation ridge soaring" And because boys in Taurus had selfie stick aboard...
And because boys in Taurus had selfie stick aboard... henryk
Well-Known Member
John.Roo
Well-Known Member
Nice motivation to fly / drive electric
John.Roo
Well-Known Member
But far best motivation to fly is here.....
I definitelly love this video.
And my dream is to meet Indiana Jones personally
And my dream is to meet Indiana Jones personally
Speedboat100
Well-Known Member
I like this scene:
John.Roo
Well-Known Member
Place where I learned to fly in mountains....
henryk
Well-Known Member
=Sebastian Kawa a teacher ?
=triangle 300 km=2 h... NO engine !
-kiss me quick...
John.Roo
Well-Known Member
I met Sebastian in St. Auban
And I flown with Sebastian in Phoenix in CR.
He is gliding legend, like for example Klaus Ohlmann etc.
My "teacher" was another gliding legend - Rene Fontin
And I flown with Sebastian in Phoenix in CR.
He is gliding legend, like for example Klaus Ohlmann etc.
My "teacher" was another gliding legend - Rene Fontin
henryk
Well-Known Member
=very energy efficient methode of wing propulsion...
=not efficient,but...KASPERWING
Last edited:
henryk
Well-Known Member
+ DYNAMIC soaring in athermic,gusty wheaser...
=pp.13/14 .
=pp.13/14 .
John.Roo
Well-Known Member
Birdy 120 kg...
Interesting project.
www.aerokurier.de
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
Interesting project.
120-Kilo-Klasse: Birdy startet zum Erstflug
Der Elektro-Segler Birdy ist mit nur 120 Kilogramm Leermasse der Gegenentwurf zum klassischen, zertifizierten Segelflugzeug. Nach zweijähriger Entwicklungszeit hob das dank Elektroantrieb eigenstartfähige Flugzeug am 7. August zum Erstflug ab.
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
henryk
Well-Known Member
-probably for propeller/tail interferency lowering...( noise problem) ?
John.Roo
Well-Known Member
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?
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?
henryk
Well-Known Member
"
Base price in Euros excluding VAT:
GP11 Pulse 43,000
GP14 Velo 82,900
GP15 Jeta 93,900
"
henryk
Well-Known Member
"
Pipistrel Velis Electro got a Price the Plane of the Year
"
from Plane&Pilot Magazine ...
dlapilota.pl
Pipistrel Velis Electro got a Price the Plane of the Year
"
from Plane&Pilot Magazine ...
Pipistrel Velis Electro z nagrodą Plane of the Year
Elektryczny samolot Pipistrel Velis Electro otrzymał nagrodę Plane of the Year 2020 przyznawaną przez Plane&Pilot Magazine
Speedboat100
Well-Known Member
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
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.
