Super Neptun (oz10243)

 

Super Neptun (oz10243) by Radoslav Cizek 1953 - plan thumbnail

About this Plan

Super Neptun. Free flight A2 towline glider model. Wingspan 1570mm.

Scan from DBHL, cleanup by theshadow.

ref DBHL-5307.

Direct submission to Outerzone.

Update 27/4/2022: Added instructions, thanks to Axel_VPF.

Quote (google-translated from the German): "Glider model 'Super Neptune' from the CSR. Class A2 Elementary. Published by the Central Board of the Society for Sport and Technology - Aviation Department.

This blueprint is for sale within the organization only. It may not be placed on the public market.

The Super Neptun glider model was constructed by fellow CSR model builders. It is the further development of the Neptun glider model, which emerged as the winner of the Polish-Czech model flight competition in 1953 in Zakopane (Poland) have built class A1. The structure is very light and saves on plywood. With regard to the structural difficulties that thin profiles present to beginners, the proven profile MVA 301 was chosen for the wing.

A few notes on building the model: The fuselage has been designed as a stick fuselage to save on material. In its form it is very simple and can be built by any beginner with a little skill. We make the side walls of the hull in the usual way on a nail template. To do this, it is appropriate to transfer the sides of the fuselage to white paper.

We glue the nose cut out of spruce wood together, give it its external shape and make the incisions for the torso straps with a chisel or knife. Then we insert the side walls and glue them to the fuselage head. For the time being we connect the end of the fuselage with a rubber ring. Now we can glue in the cross braces of the fuselage.

We align the finished hull and let it dry. After drying we attach the rudder and launch hooks. We strengthen the sides and bottom of the fuselage in the area of the nose by planking with strong drawing paper or thin veneer.

The wing has two spars. The ribs are pulled onto the spar after bending the spar caps. We indicate the arrangement of the ribs beforehand on the spars. First we insert the leading edge and then the trailing edge. In order to give the trailing edge the desired transitional shape to the wing tip, it is cut lengthwise as shown in the plan and glued back to a nail template. The plywood planks of the spars are easy to glue. This achieves the increased bending strength of the wing.

The wing tips can be laminated as usual or made of bamboo. When plastering the wing, the leading edge should be rounded off well and the trailing edge adjusted to the profile, ie bevelled backwards.

The tailplane is made in one piece with a simple construction. It is also designed as a thermal brake. The construction of the thermal brake can be seen in the construction plan. The best angle for the folded-up tail unit should be about 40°.

Before covering, the model is plastered clean. For covering we use our usual covering paper of 30-40 g/m2.

As with any other flight model, it is important to have a clean construction. Last but not least, conscientious training and mastery of the model under all conditions, especially during high-launch, are decisive for good flight performance. If you have gotten to know a model properly and value good care of it, the desired success will not be lacking.

Now have a lot of fun with the glider model 'Super-Neptun', with which our Czech friends have already achieved good results."

Supplementary file notes

Instructions, in German.

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Super Neptun (oz10243) by Radoslav Cizek 1953 - model pic

Datafile:
  • (oz10243)
    Super Neptun
    by Radoslav Cizek
    1953 
    62in span
    Glider F/F
    clean :)
    all formers complete :)
  • Submitted: 02/07/2018
    Filesize: 263KB
    Format: • PDFbitmap
    Credit*: DBHL, theshadow

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  • Super Neptun (oz10243)
  • Plan File Filesize: 263KB Filename: Super_Neptun_DBHL_oz10243.pdf
  • Supplement Filesize: 2595KB Filename: Super_Neptun_DBHL_oz10243_instructions.pdf
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Notes

* Credit field

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Scaling

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