The first loss suffered by the Finnish Air Force during the 'Winter War' with the Soviet Union in 1939-40 was Sergeant Kukkonen who, flying a Fokker D XXI of Fighter Squadron HLeLv24 near Viipuri, was shot down by his own anti-aircraft guns on 1 December 1939.

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Aviation Design/ Tools (aeronautics - airfoils) » Complete Airfoil Archive

 Airfoil Archive: The most complete airfoil collection available. (approx 2000 airfoils) Includes Clark, NASA etc.
The airfoil profiles are in a lot of ways considered the heart of the aircraft. A good airfoil is critical in attaining the desired aircraft performance.

CAD Drawings (DWG, DXF) Aircraft Plans A-C + (0-9) » (cust fav) Sukhoi Su 26MX Scale Model CAD Plan

 Computer-Aided Design/ Drafting (CAD) model airplane plans in DWG or DXF format. Plans may vary greatly in detail and quality. Some are quite clear and complete others perhaps less useful for your needs.
View full description for more details;

Airplane (scale model) Plans A-C + (0-9) » 150 Trainer Sc150r PDF Scale Model Plan

 Airplane Plan - Converted to PDF format for easier viewing and printing. These plans vary in detail and quality. Some are Marvels of Aircraft Design and others a good start for your next project.
View full description for more details; R/C, display etc. Quick, Easy and Secure download.

Aviation Design/ Tools (aeronautics - airfoils) » Airfoil plotting software

 Profile - A great little program to display and print/plot airfoil templates for aircraft designs.
Simple, fast and extremely accurate - any airfoil you want from .dat and .cor files.
View full description for more details.

Airplane (scale model) Plans A-C + (0-9) » 195 PDF Scale Model Plan

 Airplane Plan - Converted to PDF format for easier viewing and printing. These plans vary in detail and quality. Some are Marvels of Aircraft Design and others a good start for your next project.
View full description for more details; R/C, display etc. Quick, Easy and Secure download.

CAD Drawings (DWG, DXF) Aircraft Plans N-S » Piper J3 Cub Classic Scale Model CAD Plan

 Computer-Aided Design/ Drafting (CAD) model airplane plans in DWG or DXF format. Plans may vary greatly in detail and quality. Some are quite clear and complete others perhaps less useful for your needs.
View full description for more details; R/C, display etc. ALL FREE to promote the great hobby of aviation.

Aviation Design/ Tools (aeronautics - airfoils) » Professional wind tunnel

 Plans to construct your own professional wind tunnel. Designed by NASA Low cost project (can be built for less then US$ 250.00) This was designed to produce a steady airflow with no turbulence in the testing area. Designed to test scale model/s of your airfoil, fuselage, canopy etc.