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#21
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I think it largely (for the Buff at any rate) depends on how
much SEAD or degredation of the enemy air defense network has occurred beforehand. Why single out just the BUFF? The BUFF is as surviveable, or even more in some cases, as the B-1B. This myth has got to die sometime. Hey, BUFDRVR, anyone take a (guided) potshot at you and yours during OAF? Not really. Intermitant looks every now and than, but not enough to guide a missile. Although the Serbs were pretty good (acurate) at optical shots, the Iraqis not so much. BUFDRVR "Stay on the bomb run boys, I'm gonna get those bomb doors open if it harelips everyone on Bear Creek" |
#22
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"BUFDRVR" wrote in message ... But is 'that' statement correct? Doesn't the B-52 and the B-2 (all a/c actually) use lubricating oil? How does that consumption stack up? The last B-52H around the world flight in '94 burned/leaked about half of its useable oil (an average over 8 engines). On one occasion during the early days of OEF, a B-2 had its engines running continuously for 3 days. It had flown a 40+ hour mission from CONUS, landed at the FOL, did an engine running crew swap (they were concerned shutting down systems increased the chances something would break upon restart) and flew 28+ hours back to Missouri. At the FOL, no oil was required in any of the engines. I never heard about oil status upon landing at Whiteman. A B-1B had an around the world flight around 96-97 timeframe but I never heard anything about their oil consumption. BUFDRVR The B-1B around the world flight by the Dyess AFB, 9th Bomb Squadron, aircraft was in June, 1995. No record or "buzz" about oil consumption although it stands to reason there must have been some...just not significantly so apparently. JB http://www.geae.com/aboutgeae/pressc..._19950615.html |
#23
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On Sat, 01 Nov 2003 22:46:23 GMT, "Gord Beaman" ) wrote:
Alan Minyard wrote: On Sat, 01 Nov 2003 05:35:15 GMT, "Gord Beaman" ) wrote: (BackToNormal) wrote: Anyway, prob fixed. I'm suggesting adoption of a sentence from the B52 page which states "The use of aerial refueling gives the B-2 a range limited only by crew endurance". cheers ronh But is 'that' statement correct? Doesn't the B-52 and the B-2 (all a/c actually) use lubricating oil? How does that consumption stack up? In a turbine engine you should consume almost no oil. It is not burt in the combustion as it is in a recip, and the tolerances are close enough (at least on US built engines) that leakage is minimal. Al Minyard I don't think so Al. While a turbine engine may not burn much it has to burn some. The compressor rotates and therefore must have lubricated bearings therefore there has to be some loss (however small) across that bearing surface. Now, a turbine engine's bearings use very much higher RPM than recips do plus the oil itself is much thinner than recip oil both of which facts lead to more loss. I realize that the loss is small (I flew a turboprop a/c as a Flight Engineer for several years so I'm familiar with them and what they use for oil). I agree. Perhaps I should have said "small" vice "minimal" but in my mind they are basically the same thing. If you have sealed bearings (ball or roller vice sleeve) the loss will be er, uh, quite small? :-)) Al Minyard |
#24
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"John Mullen" wrote:
Hmm. I still think the engines would need attention before crew endurance became an issue. After all, with two pilots (hell, they could carry three or four) and a place to sleep, you could otherwise go on for months? John While I agree with the first part of your post (the first sentence) I want to address the second part. We tried that scenario with the Argus. A 'very' long range patrol with the essential parts of a double crew. While the a/c is perfectly capable of a safe 30+ hour flight the two crews landed completely exhausted. Remember now, it was a flight specifically designed to test the feasibility of using a double crew, with the 'other crew' sleeping etc while 'off duty'. It doesn't work the way one would think, the off duty crew gets just as tired as the 'working' one, even though all personnel are well used to getting their proper rest when working in a normal crew environment. -- -Gord. |
#25
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If you want to point a finger at costs point it at Congress. The
agonizing stretch-out of the development and contruction periods we have experinenced in the last 20-odd years just tots up billions as everything is slowed down but the overhead costs just keep piling up. Walt BJ |
#26
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"Jim Baker" wrote:
landing at Whiteman. A B-1B had an around the world flight around 96-97 timeframe but I never heard anything about their oil consumption. BUFDRVR The B-1B around the world flight by the Dyess AFB, 9th Bomb Squadron, aircraft was in June, 1995. No record or "buzz" about oil consumption although it stands to reason there must have been some...just not significantly so apparently. JB Ok guys, thanks, I guess that takes care of that then...the oil consumption issue is a non-issue...Now, lessee...what about the waste disposal (as someone mentioned upstream) ...clothespins? -- -Gord. |
#27
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If you want to point a finger at costs point it at Congress. The
agonizing stretch-out of the development and contruction periods we have experinenced in the last 20-odd years just tots up billions as everything is slowed down but the overhead costs just keep piling up. Walt BJ In which case, production and unit numbers, get reduced. Which then drives the unit cost up, which then results in even more cuts. They you arrive at a situation where you get so few of something, like the B-2, where the bulk of the costs were already paid for, but when spread out among such a small production run, the planes become extremely expensive. Ron Pilot/Wildland Firefighter |
#28
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Now, lessee...what about the
waste disposal (as someone mentioned upstream) ...clothespins? Another good long endurance flight story. That same B-2 who had its engines turning for 3 days, suffered an "internal waste spill" during the flight. They had their normal waste disposal (a chemical toilet) and carried piddle packs in the event the chem toilet filled. Well, after 30+ hours the toilet filled and piddle packs began to be used. A few hours out of the FOL, clean up was undertaken by one of the crew. Apparently the used piddle packs were being collected in a large trash bag behind the mission commander seat. The crewmember "tiddying up" accidently tore, not only the trash bag containing the piddle packs, but some of the packs themselves. I'm told it wasn't the smell of urine that was so bad, but the chemical stuff that they put inside the piddle pack to absorb the urine. The crew did their best to clean it up, as did a few crew chiefs during the crew swap, but the crew that had to ferry the jet back to North America wound up with their oxygen masks up for most of the 28+ hour sortie due to the smell. Here's one, first hand. I had never, in over 2500 B-52 hours, ever checked to make sure there was a "jerry can" connected to the urinal but I do now. Ten minutes after leveling off on a planned 19+ hour OEF mission I cleared off for relief I went downstairs. I was extremely lucky to notice the can was missing before I began using the urinal and avoided "shining my shoes". The biggest question became what do we do now? After a quick inventory of all crew gear, we came up with a Hefty (TM) garbage bag and some duct tape. Being the aircraft commander, not to mention the guy who discovered the problem and *in immediate need of relief*, I undertook the job of duct taping the garbage bag to the hose in a secure enough manner as to avoid any leaks. Being a former plummers assistant in High School, I was successful. The best part was at the 12+ hour mark when the bag began to take on a life of its own, ebbing and flowing, rolling and shifting with the aircraft movements. BUFDRVR "Stay on the bomb run boys, I'm gonna get those bomb doors open if it harelips everyone on Bear Creek" |
#29
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After an exhausting session with Victoria's Secret Police, BUFDRVR
blurted out: Another good long endurance flight story. That same B-2 who had its engines turning for 3 days, suffered an "internal waste spill" during the flight. [alibi] Not having read previous posts in this thread [/alibi] I have a hilarious aduio file of a fellow "un-named" Viper guy downloading all over the RCP of a D model...then sheepishly advising Lead they must RTB. Here's one, first hand. I had never, in over 2500 B-52 hours, ever checked to make sure there was a "jerry can" connected to the urinal but I do now. Well with 7500+ in MD-80s and 3000+ in B-757s, I just go farther aft if the FC Lav is occupied. Juvat (and I let the other guy eat the cheesecake) |
#30
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