Lalysee (oz16345)

About this Plan

Lalyse. Radio control flying wing slope glider model. Wingspan 28 in.

Quote (translated): "Lalysee, a wing not like the other. By Franck Aguerre. Photos: Pascale Constantin.

We are living in change at the moment, radical in our hobby: indeed, the rapid evolution of electronics has permitted the arrival on the market of miniaturised equipment, resulting in a craze growing for small appliances, starting with indoors and small starter aircraft. However, even if all the accessories (haven, micro-servo, receiver) became very accessible, it had very little impact on the slope flight: no more small machines are encountered, whether it is flying wing or glider, adapted to this new equipment.

In order to transmit the virus to an aeromodelist young person (Guillaume, who will recognise...), I wanted to use all this little material to make a cost-effective machine meeting the following specifications: compact, very easy to control, sufficiently fine and scratching, and if possible original. The result responds to the sweet name of Lalysee, flying wing for slope flight.

The Design: It all started with the choice of geometry. In order to reconcile stability and finesse, I opted for a intermediate geometry between the flying wing and the delta. After a few rapids calculations, knowing that the bug had to carry about 60 g of equipment radio and that I wanted a very low wing charge (about 10 g/dm2), I have sliced for an area of 17.5 dm2. This gives a mass of 115 g maximum. for the cell, which will ultimately reveal this very easy to respect. Indeed, using standard materials, my cell weighs 90 g with interlining.

The dimensions chosen are comfortable: strings 350 mm and 145 mm, span of 700 mm, which suggests a very high behaviour easy.

With this in mind, the profile has been specially created for the It doesn't find anything that satisfies me in my database. The also, the specifications are very simple: very easy behaviour and Correct fineness with a very low wing load. It takes quite a lot of time and patience, but the result really was the same as the match for work. This profile, called FAD04, is 10.5% relative in thickness, and has as a feature a slight curing on the upper surface and a leading edge rather thick. Its very low cm0 allows it to be used both on a flying wing. or a conventional stabilizer apparatus.

This profile will turn out to be in flight a very good one. master profile, both very scratching, capable of flying very slowly as well as being fine, with behaviour at very considerate early. However, he can't do everything: the dress on The back isn't his cup of tea. Another advantage is its relative thickness rather important allows all types of construction, structure traditional to polystyrene made up.

For those who would like to use it on others models, this profile can advantageously be used on apparatus intended to learning or pleasure of scratching. Arilon joints will have to be between 15 and 20% of the rope... "

Direct submission to Outerzone.

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