E-Libellen Info: 

Dear parties interested in the Electric-Libelle:

Today we would like to inform you on the development status of the Electric-Libelle.

Our concept of modernizing the Std. Libelle and implementing an electric motor system

 capable for self-launch without any difficulty, really met our expectations, at least in principle.

However, a number of modifications of motor and controller were made to reduce temperatures

 and to increase run-time of the engine. Unfortunately, these changes had side effects we actually

did not expect as there are significant interferences. Since February this year we were

working - together with electronic experts - to overcome these electromagnetic disturbances,

 but up to now filtering measures could not solve the problem.

Currently we are trying to find new components which do not create such disturbances.

 We are afraid that the required changes might result in a number of modifications and

 that we will need to create new details in order to realize our concept.

This means for us, more or less, to start all over again, which will require lots of time and efforts.

 Nevertheless, we have decided to hold on to our goal, but we are unable to guess on the timeline to the goal.

 We will keep you updated from time to time.

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To be more up to date we have now in addition to our homepage

a face book page, where we are sharing news and pictures:

https://www.facebook.com/search/top/?q=glasfl%C3%

BCgel-glasfaser%20flugzeug%20service&epa=SEARCH_BOX

When you are sending us pictures, please, let us know, if we can publish them

 on our homepage and Facebook page.

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June 15, 2019  was a successful day for the Crystal Squadron.  Our special congratulations to Karl Sommer

and his fifty year old sailplane Libelle H-301 # 110 for their 200th diamond distance flight! 

For info: The “Crystal Squadron” is a group of soaring pilots flying out of Crystalaire airport in Llano, CA.

The group follows the Henry Combs tradition and philosophy by flying straight out as far as possible on a regular basis

 each Saturday and sometimes on holidays between late-April and mid-September.

 The only requirement for membership in the Crystal Squadron is to fly straight out from

the Southern California Soaring Academy (SCSA), Crystalaire Airport

 
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       After the overwhelming feedback  regarding the Glasflügel meeting in 2016 it is planned to have a      gathering again this year.

       Starting on June 12 until June 16, 2019 we will come together in Bad Saulgau to fly together, to share recollections and

 experiences and - may be - to get some news.

        For all of you not yet registered, here is the webpage of the organizers: www.glasfluegel.net

Hanko, Christian and your Streifly-team

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 2019

New fun in old plastic gliders

According to this motto for the second time a competition for old club-class gliders was held in Australia. By the rule change for the club-class by the IGC most of the relatively inexpensive gliders were culled out of competition flying. To reestablish a competition platform for these gliders the team around Nick Gilbert and Adam L’Anson has created a Grand Prix with the handicap 1.0.

This was the starting point for Formular 1.0 GP which became instantly the most popular gliding contest on the fifth continent. The tracking system, which was developed especially and the contest software gave for the first time an overview of the standings at all times during the race, much to the exaltation of the spectators and crews. Last year 26 gliders competed in two groups which were mixed through depending on the performance of the day. Due to the great demand this year 39 competitors were admitted in three groups (10 Std. Libelles and 4 Hornets, aside LS1, DG100, Jantar and Cirrus). As the starts for the groups were separated there were no huge gaggles and a fair result was possible without huge efforts. Average speeds topped 136 km/h although water ballast was not permitted and so it was exiting to follow the race.

 Ingo Renner was engaged for patronage and handed over the prices on final day:

1.       Ben Loxton                         Std. Cirrus

2.       Lumpy Paterson                 Std. Cirrus

3.       Andrew Maddocks            Hornet

This outstanding event came to our attention as well. As it is a platform to prove the performance for older gliders like the ones from Glasflügel, we were happy to support the event as sponsor and as competitor. Recommendable!

Status Report on the Electro-Libelle

 Having flown the aircraft on 18 flights during average weather conditions with a temperature range from 25 to 36° Celsius we have not achieved a satisfying temperature of the engine controller unit.

Three weeks ago we have therefore decided to change to another controller providing higher performance.

The new controller was shipped immediately from the manufacturer and we were able to do the necessary modifications. Unfortunately, the size and weight of the controller made some modifications to the engine compartment necessary. These have been finalized in the meantime and we will continue with the tests. Of course, we will report on the progress in due time.  

 June, 2018     Electro-Libelle

In the meantime, we have been able to do more than 10 self-launching with our electro-Libelle and have several hours of engine time in the air. Numerous data were collected, which we evaluate for the optimization and approval of the system. So we are currently still not satisfied with the cooling capacity at the motor controller, because the power has to be reduced after just a few minutes. 

 

 Here are a few more details about our eLibelle:

D-KLIB
Motor-Power	20 kW cont.
Propeller diameter	1,24 m
Akku-System	in the wing
Akku-Energie	6,2 kWh
Akku-Mass	~45 kg

 

   

the Ventus 3!




On the 9^th April the Std.Libelle 201 BE with the registration D-KLIB performed the first selflaunch.

More than 50 years after the maiden flight of the Std Libelle a new chapter of the Glasflügel history has been opened with a new development .

On the 9^th April the Std.Libelle 201 BE with the registration D-KLIB performed the first selflaunch. The system uses an electric motor with 20 KW driving a two bladed propeller with 1,25 m diameter. For the team Hansjörg and Christian Streifeneder it was an important milestone towards the certification of the system after 24 month of work. The layout of the concept was part of bachelor degree in aeronautics of Peter Speidel which makes him a key person of this project.

The weight of the “Electric Libelle“ is similar to a Std. Libelle 201b with water ballast and the stall speeds are only slightly higher than an unballasted Std Libelle. On take off the climb with 2,5 to 3,0 m/s is very good and proved the calculations . The noise and vibration are a lot less compared to the normal combustion engines. The battery capacity provides a motor run time of up to one hour.

For the next few months the flight test program and certification process will be done and we will continue with more information soon.

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50 Years Standard-Libelle Glasflügel

https://m.aerokurier.de/luftsport/segelflug/glasfluegel-libelle-50-jahre-standard-libelle/747806

12-14th August 2016.   It was a unique Glasflügel FlyIn at genial weather  at the airfield in Saulgau (EDTU).    More than 200 participants were able to be there and visited with their Libellen H-301, BS-1, Std.Libellen, Kestrels, G-604, Club Libellen, Hornets, Mosquitos, Glasflügel 304 und Falcon the birthplace of their gliders. Five tow planes moved tirelessly the beautiful sailplanes  in the air and the glider pilots were able to enjoy flying over the "home and the nice country side of Swabia.

1st of July 2016

We proudly announce a new generation Mylar seals

With the Mylar tapes and sealing kits we provided our customers an easy possibility to improve the performance and handling characteristics of their aircraft.

These options we developed and improved now for over 30 years to meet the requirements of the market and technology to set new standards. And now we proceed this tradition with our new super white Mylar which matches perfectly the color of gliders and motor gliders with as well as the advantage of better bonding.

Test our new super white Mylar !

No question you will still get the standard seals parallel as you are used to in our premium quality.

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