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 Fri Jul 04, 2025 4:54 pm

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  [ 10 posts ] 
Author Message
PostPosted: Sat Nov 07, 2015 2:01 pm 
Offline

Joined: Wed Jun 01, 2011 11:23 am
Posts: 699
The Curtiss C-46's max gross was 40,000 pounds, but I have seen references to its "war emergency" gross weight of 48,000 and even 50,000 pounds. I have heard of war emergency power, of course, but never war emergency weight. Are the 48,000/50,000-pound C-46 weights a myth, and is there actually something called "war emergency weight"? (I'm not talking about bush operator intentionally overloading an airplane, I'm asking if there is such an official military designation.)


Top
 Profile  
 
PostPosted: Sat Nov 07, 2015 3:32 pm 
Offline
Long Time Member
Long Time Member
User avatar

Joined: Wed Jan 19, 2011 12:27 am
Posts: 5623
Location: Eastern Washington
I've never heard of such a rating. I looked up the weight issue in my dad's C-47 "TO. 1C47-1". It makes n mention of a war emergency load.
It skirts the issue in a way that the FAA would not probably approve:

"Under conditions of extreme emergency, when safety of flight is of secondary impotence, the commander will determine whether the degree of risk warrants operation of the aircraft at gross weights appearing in the red zone (chart)."

_________________
Remember the vets, the wonderful planes they flew and their sacrifices for a future many of them did not live to see.
Note political free signature.
I figure if you wanted my opinion on items unrelated to this forum, you'd ask for it.


Top
 Profile  
 
PostPosted: Sat Nov 07, 2015 4:39 pm 
Offline
3000+ Post Club
3000+ Post Club
User avatar

Joined: Fri Mar 02, 2007 6:52 pm
Posts: 3413
Location: Wichita Falls, Texas, USA
"War Emergency" weights have been around for quite some time. I don't know about the C-46 specifically, but I know that the current fleet of Transports all have separate weight restrictions for peacetime and war. The "War" weight is the structural max payload weight, while the peacetime weight is restricted to limit the airframe wear. On the C-5 specifically, during "peacetime" the aircraft is restricted to a maximum ramp weight of 772,000lbs, however during "emergency war order" situations, that weight increases to 840,000lbs.


Top
 Profile  
 
PostPosted: Sat Nov 07, 2015 7:46 pm 
Offline
1000+ Posts!
1000+ Posts!
User avatar

Joined: Sun Feb 18, 2007 12:39 pm
Posts: 1817
Location: Irving, Texas
C-130H models had a peacetime GW of 155,000 lbs. while it's war emergency was 175,000 lbs. I flew one at 169,000 lbs. during Desert Storm and she flew like a dog.


Top
 Profile  
 
PostPosted: Sun Nov 08, 2015 8:24 am 
Offline

Joined: Sat Jan 15, 2005 8:08 am
Posts: 247
Location: Arizona
When I flew C-46's for Zantop in 1965 we used 48,000 pounds as max. gross for T.O. There were times when we went out at 50 -51,000 #.


Top
 Profile  
 
PostPosted: Sun Nov 08, 2015 11:34 am 
Offline

Joined: Sat Nov 07, 2015 5:46 pm
Posts: 4
When I flew c-46 in Canada the gross weight was 48000lbs there was a conversion with R2800 cb engine of 2500hp auto feather and quick retracting gear that grossed at 54000lbs . We were close to that weight when we were loaded with 5/8 x 12 foot gyp rock instead of 1/2 x 8 foot the tail came up slow other than that it flew fine but it was cold -30c .


Top
 Profile  
 
PostPosted: Sun Nov 08, 2015 4:28 pm 
Offline

Joined: Wed Aug 11, 2010 7:56 am
Posts: 843
B-25 MTOW was 34000lbs but flight manual allowed up to 44000lbs


Top
 Profile  
 
PostPosted: Sun Nov 08, 2015 5:40 pm 
Offline
3000+ Post Club
3000+ Post Club
User avatar

Joined: Sun Nov 07, 2004 2:02 am
Posts: 4703
Location: Yucca Valley, CA
This reminded me of a crash I'd read about a long time ago; checked the ASN and it was C-46F 44-78635/N1244N, the one in 1960 that killed many members of the Cal Poly football team:
aviation-safety.net wrote:
The aircraft took off from Toledo Express Airport on the return flight to San Luis Obispo, California, weighing approximately 2,000 lb more than its maximum certificated gross weight of 47,100 lb. The aircraft crashed approximately 5,800 feet from the threshold of the take-off runway, caught fire and was destroyed.

PROBABLE CAUSE: "The accident was due to loss of control during a premature lift-off. Contributing factors were the overweight aircraft, weather conditions, and partial loss of power in the left engine."

http://aviation-safety.net/database/rec ... 19601029-1

_________________
Image
All right, Mister Dorfmann, start pullin'!
Pilot: "Flap switch works hard in down position."
Mechanic: "Flap switch checked OK. Pilot needs more P.T." - Flight report, TB-17G 42-102875 (Hobbs AAF)


Top
 Profile  
 
PostPosted: Mon Nov 09, 2015 12:04 pm 
Offline
User avatar

Joined: Tue May 03, 2005 3:57 pm
Posts: 283
Location: Houston, TX
b29flteng wrote:
C-130H models had a peacetime GW of 155,000 lbs. while it's war emergency was 175,000 lbs. I flew one at 169,000 lbs. during Desert Storm and she flew like a dog.


Please explain! What does "fly like a dog" mean? I think this is very interesting, as I have no idea how a C130 flies. I know how a C172 flies with 4 adults.

Thanks!


Top
 Profile  
 
PostPosted: Mon Nov 09, 2015 8:00 pm 
Offline
1000+ Posts!
1000+ Posts!
User avatar

Joined: Sun Feb 18, 2007 12:39 pm
Posts: 1817
Location: Irving, Texas
Flying like a dog, slow to accelerate, slow to climb, low cruise ceiling.

Below 120,000 lbs. a C-130 has spectacular performance.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 10 posts ] 

All times are UTC - 5 hours


Who is online

Users browsing this forum: Google [Bot], Google Adsense [Bot] and 23 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:  
Powered by phpBB® Forum Software © phpBB Group