• Hi Guest! Forum rules have been updated. All users please read here.

PW F-119 and GE F-120

flateric

ACCESS: Above Top Secret
Staff member
Top Contributor
Senior Member
Joined
Apr 2, 2006
Messages
9,181
Reaction score
1,407
Looking for color photos of PW F-119 and GE F-120 equipped with YF-23 nozzlez, AFAIK some photos were in AWST ca 1990-91. Thanks anyway:)
 

overscan (PaulMM)

Administrator
Staff member
Joined
Dec 27, 2005
Messages
13,010
Reaction score
5,691
Nothing. I found nice pics of the YF119-PW-100L which is the Lockheed variant here:

http://www.enginehistory.org/usaf.htm

plus generic "2D vectoring" nozzle version.
 

flateric

ACCESS: Above Top Secret
Staff member
Top Contributor
Senior Member
Joined
Apr 2, 2006
Messages
9,181
Reaction score
1,407
Thanks, Paul, and there's not just YF-22 variant, YF-23 as well - that's PAV-1 in restoration facility in WPAFB Air Force Museum:
http://www.enginehistory.org/G&jJBrossett/USAF/P&W%20YF119%20Northrop-McDonnell%20Douglas%20YF-23.JPG

I've found some more pics on the web, (c) Phil Callihan
 

Attachments

  • 04USAFM-YF23Engine.jpg
    04USAFM-YF23Engine.jpg
    112.6 KB · Views: 331
  • 04USAFM-YF23Engine-2.jpg
    04USAFM-YF23Engine-2.jpg
    101.2 KB · Views: 322

overscan (PaulMM)

Administrator
Staff member
Joined
Dec 27, 2005
Messages
13,010
Reaction score
5,691
Hey, you are right, I was correct and didn't even notice! I thought it was the right thing, due to the YF-23 in the picture, but from the angle of the pictures the nozzle didn't look correct. I found the other pics you posted too, but didn't notice the one with the great view of the YF-23 nozzle.

My only defence is that it was very late and I was tired ;)
 

overscan (PaulMM)

Administrator
Staff member
Joined
Dec 27, 2005
Messages
13,010
Reaction score
5,691
Some more nozzle stuff
 

Attachments

  • YF119-Lockheed.jpg
    YF119-Lockheed.jpg
    117.4 KB · Views: 267
  • YF119-Northrop.jpg
    YF119-Northrop.jpg
    93.3 KB · Views: 262
  • YF120.jpg
    YF120.jpg
    57.6 KB · Views: 335

overscan (PaulMM)

Administrator
Staff member
Joined
Dec 27, 2005
Messages
13,010
Reaction score
5,691
One more.

Source:
  • David C. Aronstein, Michael J. Hirschberg, & Albert C. Piccirillo Advanced Tactical Fighter to F-22 Raptor: Origins of the 21st Century Air Dominance Fighter AIAA 1998
 

Attachments

  • yf-120-Lockheed.jpg
    yf-120-Lockheed.jpg
    37.4 KB · Views: 142

flateric

ACCESS: Above Top Secret
Staff member
Top Contributor
Senior Member
Joined
Apr 2, 2006
Messages
9,181
Reaction score
1,407
Paul - thank you so much! Look what I digged -
 

Attachments

  • YF119-PW-100N.jpg
    YF119-PW-100N.jpg
    58.5 KB · Views: 153

overscan (PaulMM)

Administrator
Staff member
Joined
Dec 27, 2005
Messages
13,010
Reaction score
5,691
Higher res scan of YF120 nozzles in TIF format as requested by flateric
 

Attachments

  • YF120Nozzle.tif
    158.4 KB · Views: 866

elmayerle

ACCESS: Top Secret
Senior Member
Joined
Jan 8, 2006
Messages
1,424
Reaction score
269
Biggest difference is that Northrop found they could get all the manueverability they could use without going to vectoring nozzles, which greatly simiplified the back end of the YF-23.
 

flateric

ACCESS: Above Top Secret
Staff member
Top Contributor
Senior Member
Joined
Apr 2, 2006
Messages
9,181
Reaction score
1,407
AFAIK, Lamilloy tiles with active cooling added pretty weight penalty to nozzle trenches design, but at EMD a/c Lamilloy was substituted with composite heat-resistant covers. Needles to say that I still can't understand why cheaper and smarter design didn't win.
 

flateric

ACCESS: Above Top Secret
Staff member
Top Contributor
Senior Member
Joined
Apr 2, 2006
Messages
9,181
Reaction score
1,407
Does anyone know any dimensional data of PW F119 engine? In fact, figures of nozzle throat dimensions are of interest.
All I could dig is that inlet diameter approx. 46-47'. Or it's still classified/proprietary data? Would be funny because at least YF119 could be easily accessed at USAFM.
 

crash dummie

ACCESS: Restricted
Joined
Oct 22, 2008
Messages
33
Reaction score
0
or
 

Attachments

  • P&W%20YF119-PW-100L%20inlet.jpg
    P&W%20YF119-PW-100L%20inlet.jpg
    298.4 KB · Views: 48
  • P&W%20YF119-PW-100L%20side.jpg
    P&W%20YF119-PW-100L%20side.jpg
    312.5 KB · Views: 45
  • P&W%20YF119-PW-100L%20variable%20nozzle.jpg
    P&W%20YF119-PW-100L%20variable%20nozzle.jpg
    312.5 KB · Views: 62

ScrutorAudax

ACCESS: Restricted
Joined
Jun 5, 2015
Messages
48
Reaction score
14
Through what mechanism did the engines accomplish thrust reversal? I thought that it was a design requirement that wasn't dropped until after the prototypes had been made.
 

Sundog

ACCESS: Top Secret
Senior Member
Joined
Aug 2, 2006
Messages
2,889
Reaction score
380
ScrutorAudax said:
Through what mechanism did the engines accomplish thrust reversal? I thought that it was a design requirement that wasn't dropped until after the prototypes had been made.


These engines did not have thrust reversing. The requirement was dropped in enough time that the YF-22 was designed without the requirement on the airframe. However, the YF-23 prototypes were already too far along to change their airframes, so the nacelles were still sized to have TR, but the engines never had that capability.
 

Similar threads

Top