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XyZspineZyX
06-30-2003, 05:01 PM
JU-87 dive breaks make a screaming noise if deployed while the plane is still on the ground.

This all wrong no matter how you look at it.
The Ju-87 "Death Scream" has been proven to be a venturi effect from the oil cooler, and has nothing to do with the dive breaks.

http://www.roush.org/rausch1.gif

XyZspineZyX
06-30-2003, 05:01 PM
JU-87 dive breaks make a screaming noise if deployed while the plane is still on the ground.

This all wrong no matter how you look at it.
The Ju-87 "Death Scream" has been proven to be a venturi effect from the oil cooler, and has nothing to do with the dive breaks.

http://www.roush.org/rausch1.gif

XyZspineZyX
06-30-2003, 05:05 PM
icaris1 wrote:
- JU-87 dive breaks make a screaming noise if deployed
- while the plane is still on the ground.
-
- This all wrong no matter how you look at it.
- The Ju-87 "Death Scream" has been proven to be a
- venturi effect from the oil cooler, and has nothing
- to do with the dive breaks.
-


What was that air driven siren mounted on the landing gear strut for?



http://www.wpafb.af.mil/museum/air_power/ap18a.jpg

XyZspineZyX
06-30-2003, 05:11 PM
to demoralize the enemy. after some time, the enemy knew the sound /i/smilies/16x16_smiley-wink.gif , and the "sirene" were deleted. it brought some KM/H more.(+20-25km/h) /i/smilies/16x16_smiley-very-happy.gif

instead of this sometimes the bombes were equipted with small "Jericho-Trompeten"- small pipes at the bombfins

http://www.jagdgeschwader53.flugzeugwerk.net/diverses/franky.gif


Message Edited on 06/30/0304:16PM by JG53Frankyboy

XyZspineZyX
06-30-2003, 05:12 PM
icaris1 wrote:
- JU-87 dive breaks make a screaming noise if deployed
- while the plane is still on the ground.
-
- This all wrong no matter how you look at it.
- The Ju-87 "Death Scream" has been proven to be a
- venturi effect from the oil cooler, and has nothing
- to do with the dive breaks.
-
-
http://www.roush.org/rausch1.gif
-

Incorrect, while the oil cooler did have some "screaming effect", it had this on all planes. Ju-87's were specifically outfitten with slipstream divesirens, which were triggered when the divebrakes were lowered IIRC.

<center>
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"Atleast I'll go down in style!"
http://www.elleemmeshop.com/model1/aero/re4341.jpg
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XyZspineZyX
06-30-2003, 05:14 PM
I am not aware of an air driven siren.

I do know there was a bit of a contriversy over the "Death Scream" shortly after the JU-87 made an appearance over Poland. As wittnesses of the Warsaw Bombing fled Poland their stories of the attacks went ignored until British Citizens heard the same thing over London.

It was first asumed that there was a siren mounted on the planes for phycological effect, but recovered downed Ju-87's revealed no siren.
It wans't until after the war it was disovered that the oil cooler produced a venturi effect in a dive.

http://www.roush.org/rausch1.gif

XyZspineZyX
06-30-2003, 05:20 PM
never mind, i stand corrected

The Stuka was the most famous of all planes used by the Germans as a sturzkamfflugzeug (divebomber). The Stuka was designed strictly as an army cooperation divebomber at the urging of General Ernst Udet. It is instantly recognisable with its inverted gull-wings, and fixed-undercarriage. The Ju 87 was ugly, sturdy, accurate, but very vulnerable to enemy fighters. The Germans learned in the Battle of Britain that its use demanded air superiority. It was too slow, unmanoeuverable and underarmed, but its effectiveness in destroying vehicles, fortifications or ships, or just scaring people, was undoubted. Its accuracy was high when in a full dive that was up to 80 degrees. Once the bomb was released it used an automatic pull-up system to ensure that the plane pulled out of the dive even if the pilot blacked out from the high g forces. The Germans fitted the wheel covers with sirens that were used once the planes went into a dive to shatter the morale of enemy troops and civilians. They also fitted whistles onto the fins of the bombs to ensure that the recipients knew just when the bombs were released and could track them on the way down. Over 5700 Stukas were built.


http://www.roush.org/rausch1.gif

XyZspineZyX
06-30-2003, 05:23 PM
Red_Storm wrote:
-
-
- Incorrect, while the oil cooler did have some
- "screaming effect", it had this on all planes.
- Ju-87's were specifically outfitten with slipstream
- divesirens, which were triggered when the divebrakes
- were lowered IIRC.
-
-

There is a switch on the left consule, by the throttle quadrant, to activate the siren.




http://www.wpafb.af.mil/museum/air_power/ap18a.jpg