Jan Straka: IL-2

Original plane

Short history, versions and technical data of original plane can be found e.g. on Wikipedia: http://en.wikipedia.org/wiki/Ilyushin_Il-2

Ilyushin IL-2 type 3 version was used for the model.

Literature

1. Vojenská letadla, Václav Němeček, Naše vojsko, Praha 1992
2. IL-2/IL-10 Monografie lotnicze 22, R. Michulec, AJ-PRESS, 1995
3. Modely letadel s gumovým pohonem, Ing. Lubomír Koutný, Computer Press, Brno, 2003
4. Aerodynamika malých maket na gumu, Ing. Lubomír Koutný, Modelář 8/1985
5. http://www.airwar.ru/other/draw/il2.html
6. http://www.airwar.ru/other/draw/il2triada.html

Notes about the model

Model is of classical balsa design, covered by paper. Used material was selected with respect to weight and strength. During the building I tried to spare every gramm. Weight was the factor in selecting the components for the model, given in the table below:

Receiver:	Rex 5 MPD	9g
3x servo:	no.8524 19,6x8x19,6 mm	4,3g
Battery:	lipo 300mAh/ 7,4V	20g
Motor:	dualsky xm2812rtr-27/ 70W	26g

Final weight is 190g. Model is very stable with enough power. It glides nicely when motor is off. I tried stronger and heavier battery 450mAh/7,4 g (30g), that leads to slightly increased power and motor flight time duration, however that does not pay off 10 g weight increase.

The aim was to get slow and nicely flying aircraft in 1/20 scale. The plan is made so the building is as simple as it could. I hope that it can be an inspiration for those who like the original plan.

Building plan

Is unusally available both as bitmap in JPG format and in DWG format used by AutoCAD, that can be imported in most of CAD programs.

Building plan JPG (2,9 MB)

Building plan DWG (321 kB)

ing. Jan Straka

Photos