Supersonic propeller aircraft

[moin1900]

Here XF-84H Thunderscreech.
https://en.m.wikipedia.org/wiki/Republic_XF-84H_Thunderscreech

Here the XF-88B.
http://fighterwriter101.blogspot.com/2015/08/the-xf-88b-voodoo.html?m=1

Bell X-1 model with supersonic spinner.
https://crgis.ndc.nasa.gov/historic/Test_104:_X-1_Model

And here a patent from Curtiss.
Patent Nr: US2738148A
Title: Method of developing lift from the propeller blades of an airplane.
Inventor: Foster B Stulen / Curtiss-Wright Corp
Year: 29.09.1952
Direct link
https://patents.google.com/patent/US2738148A
The patent shows a supersonic propeller-driven aircraft.
-Delta wings with jettisonable wingtips.
-Push-pull configuration.
-This design should reach supersonic speed.

 

[TomcatViP]

Fantastic - a plethore of thanks to you !!!

 

[Sundog]

Search "Supersonic Propeller" at the DTIC and you will find a lot more documents.

 

[moin1900]

Thanks.

Flight Investigation of the Surface Pressure Distribution and the Flow Field Around a Conical and Two Spherical Nonrotating Full Scale Propeller Spinners
http://www.dtic.mil/docs/citations/ADA377332

 

[hesham]

Amazing find my dear Moin1900.

 

[Nick Sumner]

I remember reading somewhere that the turboprop Tu95 Bear was supersonic in a shallow dive. Is that true?

 

[TomS]

I remember reading somewhere that the turboprop Tu95 Bear was supersonic in a shallow dive. Is that true?

I don't think so. The prop tips are supersonic, however.

 

[Foo Fighter]

I think the Bear topped out at about 585 mph. I do remember accounts from RAF pilots on escort duty getting migraines and severe headaches from the noise of the engines etc.

 

[moin1900]

From
https://www.sti.nasa.gov/

XF-88B reports
http://hdl.handle.net/2060/19930085294
http://hdl.handle.net/2060/19980232084

XF-84H revised model
http://hdl.handle.net/2060/20050028463

 

[Stargazer]

David Rose's (presumably failed) attempts at a supersonic propeller aircraft:
https://www.secretprojects.co.uk/forum/index.php/topic,28410.0/all.html

 

[Basil]

Moin1900,

again great documents, thank you. I did a lot of research in the net to find documents regarding the efficiency of supersonic props; I did not know of the document "XF-84H Revised Model".

Btw the tips of the props of the TU-95 are rotating at subsonic speed at cruise. Only during high speed dashes the combination of forward and rotational speed make the outer 20% of the propeller reach low supersonic numbers. In 1952 the soviet company Shdanow was to produce supersonic propeller blades for the Tu-95 but it seems nothing came out of it.

 

[moin1900]

XF-84H with different fins.
http://hdl.handle.net/2060/20050029410
http://hdl.handle.net/2060/20090023635