Harakka

Development

Its design was typical of this class of aircraft, a "keel" with a pilot's seat suspended beneath a high, strut-braced monoplane wing, and carrying a conventional empennage at the end of an open framework. First flown in February 1945, the type was built from plans by Finnish gliding clubs and soon replaced earlier primary gliders such as the Grunau 9, becoming a standard piece of equipment in the clubs.

In 1946, Raimo Häkkinen and Juhani Heinonen from Polyteknikkojen Ilmailukerho redesigned the Harakka to strengthen it. This improved version became known as the Harakka II or PIK-7. In 1948, a single example of a more radically redesigned version designated Harakka III flew. This had the framework that supported the tail replaced by a single boom.

Examples of the Harakka I and Harakka II are preserved at the Suomen ilmailumuseo and the Karhulan ilmailukerho Aviation Museum, with the sole Harakka III also preserved at the latter museum.

Variants

• Harakka I - initial version (based on Oleg Antonov's Us-4 aka Antonov A-1)
• Harakka II - strengthened version (several dozen built)
• Harakka III - version with redesigned tail (1 built)

Specifications (Harakka II)

|prime units? = met

Notes

References

• {{cite web |title=Grunau 9 ja PIK-7 Harakka, kerhon 1940-50-lukujen alkeiskoulukoneet

References

1. "Harakka I (H-12)"
2. "Grunau 9 ja PIK-7 Harakka, kerhon 1940-50-lukujen alkeiskoulukoneet"
3. Hardy 1982, p.74
4. "PIK-sarjan lentokoneet"
5. Taylor 1989, p.726
6. "Harakka II (H-57)"
7. "Harakka III/PIK-7 (H-34)"
8. "Aircraft on display" [sic]