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(Source)

The propeller on the Linke-Hofmann R.II (1919) holds the record at 6.9 m (22 ft 6 in).

What are some of the largest propellers post-WWII? Top 5 or so.

  • 7
    Proprotors on the V-22 Osprey are around 11.5 m (38 feet) – Dan Pichelman Jan 27 '17 at 14:47
  • 1
    The Limke-Hofmann R.II had FOUR engines. – Mike Sowsun Jan 27 '17 at 16:44
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    The largest propellers today are mounted on top of a large mast and connected to a generator. Here the record was held for many years by the Growian experimental windmill, which ran first in 1983 and had a rotor of 100m diameter. Modern offshore windfarms have now reached dimensions of up to 170m rotor diameter. – Peter Kämpf Jan 27 '17 at 17:58
  • So, are we not counting propellers on helicopters? – Shufflepants Jan 27 '17 at 22:52
up vote 13 down vote accepted

From Google, here are some of the largest post WWII propeller diameters:

  • Depends on what measure you use. None of them ceased production before 1946. – Aoeuid Jan 27 '17 at 18:17
  • 3
    It would be wonderful to see metric equivalents of these fine numbers – Nayuki Jan 27 '17 at 18:28
  • 1
    @Aoeuid post-WWII means "after WWII." That is, they started production 1945 or later. – reirab Jan 27 '17 at 20:00
  • Tu-95 and Tu-114 would also be in there, as they used the same engine as the AN-22. – reirab Jan 27 '17 at 20:01
  • A400M blades are missing – Trebia Project. Jan 28 '17 at 22:20

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