On Wed, 20 Jul 2016 15:26:39 +0000, Charles Lindbergh
<spirit@stlouis.com> wrote:
>On Wed, 20 Jul 2016 08:55:26 +0200, Rene <dont@bother.com> wrote:
>
>>On 12 Jul 2016 08:29:13 -0700, Miloch <Miloch_member@newsguy.com>
>>wrote:
>>
>>>https://en.wikipedia.org/wiki/Junkers_Ju_87
>>>
>>>The Junkers Ju 87 or Stuka (from Sturzkampfflugzeug, "dive bomber") was a German
>>>dive bomber and ground-attack aircraft designed by Hermann Pohlmann and first
>>>flew in 1935. The Ju 87 made its combat debut in 1937 with the Luftwaffe's
>>>Condor Legion during the Spanish Civil War. It served the Axis forces in World
>>>War II.
>>>
>>
>>A beautiful series!
>>
>>I am very curious how those psycholochical warfare sirens actually
>>worked ("Trumpets of Jericho")
>>I know the were driven by small propellors in the slipstream; I have
>>seen several photos of these units, but I fail to see how the actual
>>noise is made.
>>All I can see is a ram air propeller on a smooth tube without obvious
>>holes for sound emission.
>>Does anybody have an exploded view or such of the internals of these
>>parts?
>>
>>Just a curious mind that wants to know how such small devices could
>>make so much noise!
>
>I think this is a better picture.
>
>http://static.rcgroups.net/forums/attachments/2/1/3/5/2/4/a4380467-193-Stuka-Siren.jpg
Thanks for the photo! This version has a clear way of operating.
However, I ave seen many other photos where the "trumpets" look quite
different..
See also somewhere on
http://forum.warthunder.com/index.php?/topic/218452-junkers-dive-siren/
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 - A Stuka's 'Jericho Trumpet'-1.jpg (0/1)')){kind=link}