“FLYING WING” REZINOMOTORNAYA

MODEL No. 1. This design is a continuation of work on improving the model, which is described in “M-K” (No. 1, 1972). For better aerodynamics it is applied to a fuselage of circular cross-section. The keel has a swivel mechanism to provide a forced descent. The screw diameter is increased to 556 mm, which contributes to the duration of the flight motor and improves the dynamic characteristics of the start.

 

To give greater stability of the model wing sweep increased to 25°. The profile of its endings and convexo-concave.

 

 

 

THE COORDINATES OF THE AIRFOIL OF THE MODEL 1.

 

 

 

Basically, the structure is made of balsa. Screw from Pipa. Model features rapid take-off and fast climb. The disadvantage is the relatively high speed of planning, which, unfortunately, often causes the release of the model from upstream.

 

MODEL No. 2. This is a further development of the scheme with a straight Central portion and bent back wingtips. Of the fuselage, mount the keel, the screw settings the principle of forced descent, this model is similar to the previous. But she’s a different character of the flight due to the direct installation of the wing, which helps to reduce speed as engine mode, and when planning. It has its advantages and disadvantages.

Launch of the model needs to be smoother, engine flight is not so rapid because of the tendency of the structure to fall on its back. But with careful adjustment failed in calm weather (wind 3-4 m/s without heat flow) to show the result over 2 min.

 

 

TECHNICAL DATA MODEL NO. 2

 

 

In the result it should be said that improvement of the parts, improve-rotor, changing the sweep improved the flight characteristics of the model. But, unfortunately, this has not led to a sharp increase in length of stay models in the air because of poor planning.

 

In this respect, it is advisable to search for the best profile of the ribs and elongation. Should also work on the wing with a twist in order to decrease the area of stabilizing rudders. High quality flight models with this wing showed model airplanes from Serpukhov led by an experienced teacher E. by Diligently. However, they did not gain great height, but good planning is compensated for this disadvantage, the Model is easily kept in updrafts.

 

V. BASHTANNIK