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#21
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"Ed Kyle" wrote:
Maybe that is why R-7 has been successful. There seems to be a place for "low-tech" ruggedness. The USAF is still flying B-52s of the same vintage as the early R-7s, after all (and could keep them flying for decades more if needed). Of course, very little beyond the serial number plate is left in the aircraft that dates from the vintage of the early R-7. B-52Hs are still powered by the same engines that pushed DC-8s and 707s around - engines that themselves weren't far removed from the J57s that might be considered the V-2 engines of the jet age. One finds it hard to believe the engines are exactly the same, and that no improvements in wiring, bearings, seals, etc... etc... have been made over the last forty years. (Model numbers of military equipment that aren't in the MK/MOD system are misleading - it's the drawing number and/or FSN that tells the truth.) D. -- Touch-twice life. Eat. Drink. Laugh. -Resolved: To be more temperate in my postings. Oct 5th, 2004 JDL |
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On Thu, 29 Dec 2005 07:02:04 GMT, (Derek Lyons)
wrote: One finds it hard to believe the engines are exactly the same, and that no improvements in wiring, bearings, seals, etc... etc... have been made over the last forty years. ....There's been some reliability and efficiency improvements, but the basic engine design is pretty much the same. OM -- ]=====================================[ ] OMBlog - http://www.io.com/~o_m/omworld [ ] Let's face it: Sometimes you *need* [ ] an obnoxious opinion in your day! [ ]=====================================[ |
#23
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![]() Ed Kyle wrote: I've posted a rarely seen photo of the last Saturn IB booster stage, built for the SA-214 vehicle, at the following address. "http://geocities.com/launchreport/sa214.html" Today, with the agency scrambling to develop a new Saturn IB class Crew Launch Vehicle, it almost hurts to view this photograph of one of three powerful booster stages that NASA saw fit, in another time, to scrap. - Ed Kyle I've been doing some additional searching for photos of the SA-213 booster, or more of the SA-214 booster. Absolutely nothing has popped up on any of my web searches. They're *have* to be photos out there somewhere, so I'll keep looking. But I suspect that any photos that might exist reside in musty file cabinets somewhere. - Ed Kyle |
#24
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Damon Hill wrote:
"Ed Kyle" wrote in news:1135750019.850307.129440 @g44g2000cwa.googlegroups.com: Pat Flannery wrote: Yeah, it was a resounding success...but jeeze, those engines are about 1/2 step forward from a V-2's. Maybe that is why R-7 has been successful. There seems to be a place for "low-tech" ruggedness. The USAF is still flying B-52s of the same vintage as the early R-7s, after all (and could keep them flying for decades more if needed). B-52Hs are still powered by the same engines that pushed DC-8s and 707s around - engines that themselves weren't far removed from the J57s that might be considered the V-2 engines of the jet age. The J57's more like the MA-3. (Atlas booster/sustainer) A solid, dependable system that matched every performance demand placed on it for far longer than it was ever intended to. Though it does appear that both are going to be re-engined with more modern (and efficient) designs. Don't know about the B-52s engines, but the ol' R-7's are kinda interesting and nearly unique, being spun up with hydrogen peroxide instead of a 'hot' gas generator. The 'staged combustion' HTP/kero engines that the Black Knight/Arrow? used were interesting, too. Not really high performance, but good enough in subtle ways to do the job. Nobody's been able to come up with an program that makes re-engineing B-52s worthwhile. When the Air Force bought its TF-33s, they were expecting them to last 2,000 Hrs. (About 5-10 years of B-52 non-combat flying, depending on how much Ground Alert you're pulling) so they bought a Pferdemerde (The Metric ****load, the SI value for paperwork and logistics) of engines. Then, as airline experience increased, the TBO got extended - to something like 20,000 Hrs +. They've got stacks of those things new in the can out in the Desert that are miles long, that they haven't even opened yet. With so few airplanes in service (It's around 600 engines, these days) they could probably fly them as-is until 2100 without needing new engines. No matter how much fuel you save, (The damned thing flies halfway around the world already - economy really isn't an issue.) you're just not going to beat that in overall cost. -- Pete Stickney Java Man knew nothing about coffee. |
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Pat Flannery wrote:
gb wrote: You will not hear such claims. Another 1970s Rockwell design shelved under Carter Admin (good decision) and resurrected in 1980s by Reagan Admin (bad decision). B-1B is not my favorite USAF aircraft (cousin died in 1990s South Dakota crash). Their aircrew at Grand Forks AFB hated them; the drag and disturbed airflow of the externally mounted ALCMs meant that during landing approach the approach speed and stall speed were very close together. Uhm, Pat? The B-1 never, ever carried the external ALCMs for real. That capability was dropped as part of START, and the hard points were welded over. The Soviets/Russians would and do come by every few years to make sure that they still don't carry 'em. -- Pete Stickney Java Man knew nothing about coffee. |
#26
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![]() Peter Stickney wrote: Uhm, Pat? The B-1 never, ever carried the external ALCMs for real. That capability was dropped as part of START, and the hard points were welded over. The Soviets/Russians would and do come by every few years to make sure that they still don't carry 'em. Hmmm...did that guy in the hobby shop lie to me? =-O Did some of the crews fly it pre-START in a non-operational test and familiarization form? Pat |
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On Mon, 02 Jan 2006 23:56:34 -0600, Pat Flannery
wrote: Peter Stickney wrote: Uhm, Pat? The B-1 never, ever carried the external ALCMs for real. That capability was dropped as part of START, and the hard points were welded over. The Soviets/Russians would and do come by every few years to make sure that they still don't carry 'em. Hmmm...did that guy in the hobby shop lie to me? =-O Did some of the crews fly it pre-START in a non-operational test and familiarization form? ....I don't think he did, Pat. IIRC, according to an old friend of the family who was an Air Farce colonel who worked on the logistics of the B1 program, the first bunch of B1-As had the hardpoints, but when they were converted to the B variant they were welded over. Those produced as B1-Bs from the start didn't have them, period. OM -- ]=====================================[ ] OMBlog - http://www.io.com/~o_m/omworld [ ] Let's face it: Sometimes you *need* [ ] an obnoxious opinion in your day! [ ]=====================================[ |
#28
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Peter Stickney wrote:
Uhm, Pat? The B-1 never, ever carried the external ALCMs for real. That capability was dropped as part of START, and the hard points were welded over. The Soviets/Russians would and do come by every few years to make sure that they still don't carry 'em. It's scary where the Soviets/Russians can go... When they visit Bangor they carry a stick whose length equals the diameter of a Trident missile (-I in my day, -II now I suppose), if they find a door wider than the stick, they can legally demand entrance. D. -- Touch-twice life. Eat. Drink. Laugh. -Resolved: To be more temperate in my postings. Oct 5th, 2004 JDL |
#29
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On Wed, 04 Jan 2006 06:10:19 GMT, (Derek Lyons) wrote:
It's scary where the Soviets/Russians can go... When they visit Bangor they carry a stick whose length equals the diameter of a Trident missile (-I in my day, -II now I suppose), if they find a door wider than the stick, they can legally demand entrance. Why is that "scary"? Dale |
#30
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![]() "Dale" wrote in message ... On Wed, 04 Jan 2006 06:10:19 GMT, (Derek Lyons) wrote: It's scary where the Soviets/Russians can go... When they visit Bangor they carry a stick whose length equals the diameter of a Trident missile (-I in my day, -II now I suppose), if they find a door wider than the stick, they can legally demand entrance. Why is that "scary"? Well, see with the fact that Americans are getting fatter, they're needing to make the doors to the bathrooms wider and.. well, it's not a pretty picture. Seriously though I'm sure we do something similar when we visit them. Dale |
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