mm4440
Well-Known Member
Can someone list the available13.5 m, 30:1+ SLS? Are there any suitable for homebuilding.? There is the challenge.
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The silent 2 electro?
en.m.wikipedia.org
Alisport Silent 2 Electro - Wikipedia
en.m.wikipedia.org
EzyBuildWing
Well-Known Member
Cheapest flying-fun......tow-launch eGoat or similar.....
EzyBuildWing
Well-Known Member
Motor Goats.....interesting electric innovations....
John.Roo
Well-Known Member
Apis 2
Apis Bee
Silent
GP gliders
Mini Lak
Winward Performance SparrowHawk
There are existing nice small gliders (many of them with FES or self launch possibilities). However they are mostly focused on highest possible performance (=higher price).
I personally tested the Sagitta and seems that this could be a way.
And I would really like to test also Gekon (Axel) from Poland.
"Lower" performance (L/D 1:30-1:35 and Vne under 180 kmph =+-100 kts) means that there is no need for expensive certification and flutter testing. This is important to keep price in reasonable range.
Problem can be a weight. Is not easy to stay in "simpliest" category like Class 120 kg or SSDR without light materials carbon, so design should be simple to save costs of human work.
And keep this type of glider under US FAR 103 is practically impossible for any other type than "motorized Goat".
It is also important to keep option to buy it as a KIT.
"Certified electric propulsion system" (like FES) would affect price a lot so this is a place where "homebuilders" are welcome. I don´t say that they should make whole propulsion system by themselves. However owner should have a possiblity to make a decission if he will use some "plug and play system" or something else.
As mentionned above - "There is the challenge"
henryk
Well-Known Member
=some excursion into Bieszczady hils ?
(Bezmiechowa, Weremen...)
Lotniska · Weremień
Lotniska · Lądowiska · Airports in Poland · Lotniska w Polsce
Jesienny wypad w Bieszczady – Perkoz w Bezmiechowej i Weremieniu
relacja Michała Ombacha Zachęceni złotą polską jesienią i żądni niskiego latania nad zboczem, zorganizowaliśmy w dniach 21-25 październik...
EzyBuildWing
Well-Known Member
330 mile range, but how long to re-charge at an interim "fuel-stop"?
Looks super-nice......
Looks super-nice......
John.Roo
Well-Known Member
Weremen looks like a nice airfield=some excursion into Bieszczady hils ?
(Bezmiechowa, Weremen...)
Lotniska · Weremień
Lotniska · Lądowiska · Airports in Poland · Lotniska w Polscelotniska.dlapilota.pl
Jesienny wypad w Bieszczady – Perkoz w Bezmiechowej i Weremieniu
relacja Michała Ombacha Zachęceni złotą polską jesienią i żądni niskiego latania nad zboczem, zorganizowaliśmy w dniach 21-25 październik...magazine-pl.szd.com.pl
Approx. 430 km from my home airfield.Good idea
John.Roo
Well-Known Member
330 mile range etc... so far is still only abou rendered drawings and theoretical info.
Bye Airspace have been flying with one 2 seat single motor prototype and I really liked that they have been building experience from real flying.
Unfortunatelly (probably to "catch "new investors) they follow the way of eVTOLS. Nice rendered videos, models, drawings... New single motor trainer (serial version) is not yet finished, but they announce already impressive parameters and even 6 seat twin motor version...
I suggest to wait for real results with real prototype
henryk
Well-Known Member
=contact with Darek ?
(Weremien rancho...)
(Weremien rancho...)
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henryk
Well-Known Member
Bieszczady jesienią
Lot w Bieszczady jesienią chodził mi po głowie już od wielu lat. Praktycznie co roku. I co roku zawsze się nie udawało - a to pogoda, a to uczniowie, a to brak urlopu. W tym roku w końcu się udało!
www.sky-life.pl
John.Roo
Well-Known Member
Looks like beautifull part of PolandBieszczady jesienią
Lot w Bieszczady jesienią chodził mi po głowie już od wielu lat. Praktycznie co roku. I co roku zawsze się nie udawało - a to pogoda, a to uczniowie, a to brak urlopu. W tym roku w końcu się udało!
henryk
Well-Known Member
-yes, natural,clean part of Poland...Looks like beautifull part of Poland
BTW=first National Hang gliding Championship was attempt in 76 year,Wetlina,
Bieszczady...
"We wrześniu 1976 w Wetlinie w Bieszczadach odbyły się pierwsze w Polsce Lotniowe Mistrzostwa Polski, "
John.Roo
Well-Known Member
Nice video review about LAK 17c FES from Stefan Langer.
"The TESLA of Aviation?"
Maybe not really a "Tesla" between airplanes (FES system is already well known and used in gliders) however higher undercarriage and bigger battery = better self launch possibility
Here is more info about the glider....
Just (as usually) the price - in this case we are definitelly above 100K EUR.
And... noise during self launch TakeOff is also not so comportable.
"The TESLA of Aviation?"
Maybe not really a "Tesla" between airplanes (FES system is already well known and used in gliders) however higher undercarriage and bigger battery = better self launch possibility
Just (as usually) the price - in this case we are definitelly above 100K EUR.
And... noise during self launch TakeOff is also not so comportable.
henryk
Well-Known Member
=iff + GRS ? (Yours opinion ...)
"alle Modell mit Galaxy GRS Gesamtrettungssystem (kein Fallschirm mehr notwendig) "
Home - GPGLIDERS
Die Segelflug(r)evolution:Leistung und Sicherheit eines Segelflugzeuges verpackt in einem UL! Hochleistung mit eigenstartfähigem Elektroantrieb. GP11/14/15
gpgliders.info
John.Roo
Well-Known Member
GP Gliders are really high performance and nice looking.
However I still prefere way of Gekon (Axel). GP looks like "sharp" pilot tool and I like glider more in "funflyer" category.
As Topaz wrote...
"L/D in the 30-32:1 range, easily trailerable, self-launching." And I would add something like "...easy to fly with friendly stall characteristics."
Also... Gekon (Axel) and even Sagitta are much lighter than GP = possibility to think about simple (=cheaper) certification process.
Installed rescue system (GRS, Stratos, BRS...) is advantage, but acceptable would be also parachute on pilot´s back.
henryk
Well-Known Member
h>30 m versus h>300 m...?
(weight of GRS for GEKON only twice of indyvidual paraschute.)
or SECOND CHANTZE (high pressure rocket, NO pirotechnic !) =
=allmost "soft landings" !!!
Nehodu „ultralehké stíhačky“ v Plané způsobilo nevhodné nastavení klapek - iDNES.cz
Nedávnou nehodu při zkušebním letu prototypu ultralehkého letounu UL-39 Albi na letišti v Plané u Českých Budějovic zavinilo nevhodné nastavení vztlakových klapek a výškovky.
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I've been looking forward to seeing the Aeros AC-21 come out. I don't know if they were working on an electric version or not, but seems like a good, light platform for one. The original seemed a bit light on load rating and I think this one corrects that.
henryk
Well-Known Member
AS-21 is made on the base of PHANTOM rigid wing...yet not in series production !
