Aces High Bulletin Board

General Forums => Aircraft and Vehicles => Topic started by: funked on April 14, 2001, 07:54:00 AM

Title: B-17G Top Speed Too Low
Post by: funked on April 14, 2001, 07:54:00 AM
Joe Baugher says 300 mph at 30,000 feet with WEP.  http://home.att.net/~jbaugher2/b17_16.html (http://home.att.net/~jbaugher2/b17_16.html)

I tested the aircraft at this altitude with the normal load (100% fuel, 6000 lb bombs) and I got only 290 mph.  Pretty close, but not quite there.  I wonder if the WEP is missing?
Title: B-17G Top Speed Too Low
Post by: Fishu on April 14, 2001, 02:06:00 PM
Well, B-17 doesn't have a WEP, superchargers only..
Though, doesn't really matter that much, when you consider that it would just cause more those 100% throttle dweebs  (http://bbs.hitechcreations.com/smf/Smileys/default/wink.gif)
B-17 engine would overheat from constant 100% throttle....
Title: B-17G Top Speed Too Low
Post by: juzz on April 14, 2001, 09:30:00 PM
In AH the B-17G runs at 48" MAP forever.

Military Power/Takeoff Power of 1200hp on the real B-17G was at 46" MAP, limited to 5 minutes.
War Emergency Power was 1380hp, I don't know the MAP figure though.
Title: B-17G Top Speed Too Low
Post by: funked on April 15, 2001, 04:12:00 AM
OK sounds like it's either a small drag error, or my load was too large, or it's just good old measurement error (most likely).  Or (what a concept) HTC have a better source than some guy's webpage.

[This message has been edited by funked (edited 04-15-2001).]
Title: B-17G Top Speed Too Low
Post by: Widewing on April 16, 2001, 02:36:00 PM
 
Quote
Originally posted by funked:
Joe Baugher says 300 mph at 30,000 feet with WEP.  http://home.att.net/~jbaugher2/b17_16.html (http://home.att.net/~jbaugher2/b17_16.html)

I tested the aircraft at this altitude with the normal load (100% fuel, 6000 lb bombs) and I got only 290 mph.  Pretty close, but not quite there.  I wonder if the WEP is missing?


It's not what's missing, it's what's added that makes the difference. All maximum speeds quoted for the B-17G are for an empty bomb bay. You have added three tons of bombs.

My regards,

Widewing
Title: B-17G Top Speed Too Low
Post by: Ripsnort on April 16, 2001, 03:07:00 PM
FYI, Boeings (inside the firewall) B17 webpage shows a top speed of 287 MPH at 30,000. Not arguing, just reporting.
Title: B-17G Top Speed Too Low
Post by: funked on April 17, 2001, 01:53:00 PM
Widewing I did not know that, thank you for the info!