Warbird Information Exchange

DISCLAIMER: The views expressed on this site are the responsibility of the poster and do not reflect the views of the management.
It is currently Sat Apr 04, 2026 1:26 am

View unanswered posts | View active topics


Board index » General Discussion » The WIX Hangar

All times are UTC - 5 hours


Classic Wings Magazine WWII Naval Aviation Research Pacific Luftwaffe Resource Center
When Hollywood Ruled The Skies - Volumes 1 through 4 by Bruce Oriss


Post new topic Reply to topic  Page 3 of 3
  [ 33 posts ]  Go to page Previous  1, 2, 3
  Previous topic | Next topic 
Author Message
51fixer
 Post subject: Re: ???
PostPosted: Tue Apr 01, 2008 10:05 am 
Offline
3000+ Post Club
3000+ Post Club
User avatar

Joined: Tue Jul 17, 2007 9:11 pm
Posts: 3160
Location: MQS- Coatesville, PA
k5dh wrote:
Jack Cook wrote:
what's a PRT??


PRT = Power Recovery Turbine. If I recall correctly from my readings about Constellations (:heart:), the R-3350 Turbo-Compund engine has three exhaust-driven turbines that directly drive the crankshaft, as opposed to the traditional turbosupercharger which compresses the air or air/fuel mixture going into the engine. Gary? Am I right on this?

Cheers!

IIRC The PRT turbine wheel is connected by gearing into the accessory section which is connected to the crank and into the prop shaft via the nosecase. I don't know if they directly connect to the crank.
http://www.enginehistory.org/Gallery/Di ... detail.JPG
This shows the interconnecting gearing and clutches.
http://www.enginehistory.org/lsfm.htm
This is from the EngineHistory.org web page featuring some cutaway engines at LSFM.
Rich
Top
 Profile  
 
skybolt2003
 Post subject: Re: ???
PostPosted: Tue Apr 01, 2008 10:26 am 
Offline
User avatar

Joined: Thu Sep 29, 2005 10:19 am
Posts: 429
Location: new York
Jack Cook wrote:
Hi Gary,
It's the inboard side of the inboard engine. Not that I can see anything :shock: If it was a runaway prop it would have to go through the whole a/c to get to #3 correct?

My thought at first glance was an engine fire.
Top
 Profile  
 
retroaviation
 Post subject:
PostPosted: Tue Apr 01, 2008 10:29 am 
Offline
Co-MVP - 2006
User avatar

Joined: Fri Nov 18, 2005 10:39 am
Posts: 4468
Location: Midland, TX Yee-haw.
Jack...I reckon I'm blind as well. I should've paid more attention to the picture before offering my opinions, huh? :oops: :lol:

k5dh and 51fixer...you're both right...sort of. The PRTs drive the crankshaft, via a set of gears. The gears, however, are not in the nose case, they're behind the power section, just in front of the internal blower.

Those are some great pictures that 51fixer gave us links to, that help explain it.

Gary
Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  Page 3 of 3
  [ 33 posts ]  Go to page Previous  1, 2, 3

Board index » General Discussion » The WIX Hangar

All times are UTC - 5 hours


Who is online

Users browsing this forum: Google [Bot] and 63 guests

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Switch to mobile style
Powered by phpBB® Forum Software © phpBB Group