SM Modellbau - TEK nozzle angled 240mm long

SKU: 235230

Category: GPS-Logger 3

HAN: 2780
HAN: 2780

TEK Düse für unseren GPS-Logger 2. Abgewinkelte Ausführung für die Montage im Seitenleitwerk.

45,90 €

incl. 19% VAT , plus

Currently out of stock

piece

Currently out of stock

Total energy compensation for the vario in the GPS-Logger 2!

The TEK Düse is the ideal complement for our GPS-Logger 2. This has ügt a TEK connection on the vario and allows together with the TEK Düse a vario experience as in the man-carrying gliders.
Our TEK Düse works on the principle of the "Brunswick Düse". The man-carrying aviation uses this type of construction today almost exclusively. The construction is more complex than the simple curved Nicks Düse, but is unsurpassed in compensation and also provides perfect results in model flight. D
the Düse is made entirely of stainless steel and hard gelötet. The Düsenkopf is held in the Maßstab 1:2. This sounds bigger than it is, as the original dampers are very small. The pipe with a diameter of 2.5 mm is about 240 mm long and 40 mm high in the angled version for installation in the vertical stabilizer. In the original this length is about 750 mm, so our Düse has the correct length for 1:3 he model. For smaller models the tube can be shortened a bit, for larger ones it could be lengthened and stiffened with a carbon fiber tube.
The straight extension for installation on the fuselage back is about 120 mm long.

What is überhaupt TEK?

TEK means simplified the fading of the "Knüppelthermik" by Berücksichtigung of the ride of the model. This is achieved by connecting a TEK Düse at the vario sensor.
For slow models flying at a constant speed, the simple vario without TEK is often sufficient. Here the errors due to controlled heights are not so large and you can see the thermals through the vario already well. The cleaner you fly and the smaller the speed changes are, the better the vario works without TEK Düse.
With dynamic models or even with not perfect flight style, however, it always comes to vario outputs that do not show the real climb and descent of the model, but only a controlled speed or altitude change, the Knüppelthermik. In fact, the only thing of interest in the thermal search is whether you are flying in a rising, falling or neutral air mass. Möglichst independently of how the aircraft is currently moving.

Exactly this behavior is achieved by using a TEK Düse on the variometer. This nozzle generates a negative pressure that is dependent on the airspeed and thus simulates a climb as the airspeed increases, which compensates for the loss of altitude. So you press on, the altitude decreases, and the vario without TEK would indicate sink. The TEK Düse compensates for this by displaying climb for the speed that is increasing as it is decreasing. The conversion of height (potential energy) into speed (kinetic energy) is therefore no longer incorrectly interpreted as sinking or climbing with the TEK Düse.
In the ideal case, with full compensation, the vario always shows the current sink rate of the aircraft in absolutely calm air. Of course, this is not a constant value, but depends on the speed, lift and other factors.

The connection between TEK Düse and GPS-Logger 2 is made with the separately available Düsen holder, Order No. 2785, and the hoses included there.

Technical data:

angled version: about 240mm long x 40mm high, mass 4g
straight version: about 12mm high, mass 2g
Mass Düsen holder: 0.5g
Mass Teflon hose: 6g per meter

Scope of delivery: