Haacke HFM-2 explained

The Haacke HFM-2 was a German two cylinder flat engine built in the early 1920s.^[1]

Variants

From Flight^[2]

• HFM-2 (22kW)
• HFM-2a (NaNabbr=onNaNabbr=on); as HFM-2 apart from 120abbr=onNaNabbr=on bore

Applications

• Albatros L.66^[3]
• Dietrich-Gobiet DP.VII^[4]
• Działowski D.K.D.1^[5]
• Dobi-I^[6]
• Gabriel P 5^[7]
• Karhu 3
• Mayenberger amphibian^[8]
• Rieseler R.I^[9]
• Rieseler R.II^[9]
• Rieseler R.III^[10]
• Silesia S-3^[11]
• Silesia S-4^[12]
• Udet U.1^[13]
• Udet U.2^[14]

Engines on display

• Finnish Airforce Museum

Notes and References

1. Web site: Aerodromas » History. aleksotasair.lt. 2017-02-23. 2017-02-24. https://web.archive.org/web/20170224053633/http://aleksotasair.lt/en/history/. dead.
2. Web site: The Haacke 30 hp aero engine. flightglobal.com. 2017-02-23.
3. 12 June 1924. The German exhibits. Flight. XV . 24 . 384–5 .
4. 22 May 1924 . The Dietrich-Gobiet Sport Monoplane. Flight. XVI . 21 . 286–7 .
5. Book: Cynk, Jerzy. Polish Aircraft 1893-1939. 1971. Putnam Publishing. London. 0-370-00085-4. 601.
6. Serryer . J . 13 March 1924 . Les avions Dobkevicius. Les Ailes. 143. 2–3 .
7. Book: Cynk, Jerzy. Polish Aircraft 1893-1939. 1971. Putnam Publishing. London. 0-370-00085-4. 584–6.
8. Web site: Mayenbergen amphibian. 26 February 2017.
9. Web site: Rieseler I and II. 26 February 2017. 26 October 2021. https://web.archive.org/web/20211026111004/http://www.histaviation.com/Rieseler_I_and_II.html. dead.
10. Web site: Rieseler III. 26 February 2017.
11. Book: Cynk, Jerzy. Polish Aircraft 1893-1939. 1971. Putnam Publishing. London. 0-370-00085-4. 552–3.
12. Book: Cynk, Jerzy. Polish Aircraft 1893-1939. 1971. Putnam Publishing. London. 0-370-00085-4. 594–5.
13. Web site: Udet U.1. 26 February 2017. 15 October 2022. https://web.archive.org/web/20221015002651/https://histaviation.com/Udet_U_1.html. dead.
14. The Udet Sporting Two-seater. Flight. XV . 10 . 122 .