Inspired by their beauty, a couple of years ago, I decided to design and build an own horten microlight aircraft, named “Schneewittchen” (“Snow White”).
With this blog, I would like to keep you up to date on the project.
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Schneewittchen – a horten microlight airplane
Schneewittchen is designed to fulfill the requierements of LTF-L (PDF), a class of very light airplanes with up to 120 kg empty weight. The requierements are quiet stringent, including not only the extremely low empty weight, but also a very low stall speed below 55 km/h (corresponds to 30 kn or 34 MPH). With the all-wing concept, Schneewittchen suits very well this class. To keep the weight as low as possible, I decided to use an electric drive (for example a Geiger HPD 10), as accumulators do not count to the empty weight.
Data and specifications
|Average chord:||1.5 m|
|Max. take-off weight:||240 kg|
|Est. empty weight:||95 – 103 kg|
|Best glide:||25 at 83 km/h|
|Lowest sink rate:||0,75 m/s at 64 km/h|
|Material:||mixture between carbon composite and wood|
Last blog entries
The last couple of months have been very productive. We used the free days over Christmas and New Year to design and build the drive’s cooling system. A HPD16 from Geiger Engineering with continuous 16 kW (21.5 hp) is quite efficient, but still needs proper cooling. Though not as critical, the inverter also dissipates heat, …
What a year! Pandemic, lockdown, isolation, recession, stock market crash and recovery, protests and elections in the U.S., and Belarus, refugee camps burning in the EU, trade war flaring up again, and a no-deal Brexit knocking loudly at the door. Sounds almost like a screenplay for an apocalyptic film. Well it isn’t. Sad but true. …
It’s been a week since we took part at the winter meeting 2020 of the Oskar Ursinus Association in Speyer and gave a talk about our project. After what is happing right know in the world, it seems almost surreal that this event actually took place. Indeed, at first the mood was strange: nobody shook …