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#21
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Persian Tomcats in service
In article t, "DDAY"
wrote: However, the article that I refer to does make some interesting points that the Iranians have managed to keep a lot of vintage American equipment in service despite all odds. The one thing about the F-14 is that its Phoenix missiles would make it a threat from long range. They could stay well within the air defense umbrella and fire at distant American targets. If the article is correct and at least a couple of dozen aircraft remain operational, then they could present a problem to any American air campaign. The threat to US aircraft is certainly greater from SAMs than aircraft, but that has been the case for decades. 1. The AIM-54's that Iran has are well past their shelf life and probably don't even work now. Maybe they have been mod'd locally to continue working, maybe not. Only the CIA and the USN know for sure, but 2. since the Iranians were seen trying to fit a Hawk missile to the F-14 it's probable that the AIM-54's don't work. Otherwise, why would they? 3. Even if the AIM-54's do work, the USN has the keys to the kingdom so to speak. They know all the ways to defeat the missile both with electronics and manuever. I don't think the AIM-54 is a threat anymore. -- Harry Andreas Engineering raconteur |
#22
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Persian Tomcats in service
damm...50 to 60 hrs for 1 flight hr..sheeze...
the cost of a maint hr must be around 200-500 US$, ( burdened with labor and parts, overhead etc)...makes my cessna 172rg l@@k like a bargin |
#24
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Persian Tomcats in service
"Harry Andreas" wrote in message ... In article .com, "~^ beancounter ~^" wrote: in going through some old navy paperwork i came across this.. "the f14 requires 50 to 60 maint hrs every hour it flies, while the super hornet needs 10 to 15 maint hrs for each flight hour... if true, thats a hell of a difference... Those are more or less the numbers that I've heard. BTW, the maint hrs/flt hr is still going down. It's lower on the E/F than the C/D (so I've heard). -- Harry Andreas Engineering raconteur Having had the additional duties several times as Asst. MaintO and MaintO in a squadron, (for earlier generations of aircraft) and spending a number of years in DOD (mostly DARPA), I can tell you that those figures are pretty solid. The more modern an aircraft is, the more it is "plug and play" to borrow a computer term.the aircraft is. Just about everything is a SECREP (secondary repairable). Organizational Maintenance will unplug and swap boxes, board, modules etc. on the aircraft, replace with new/repaired items, test and if passed "up the system". If it fails then another is plugged in its place. Heck even bad wires are replaced as part of a harness assembly. The SECREP then goes to Intermediate or Depot Maintenance for repair, and after repair it goes back into the supply system. About the only, "old time maintenance" that takes place on an aircraft anymore is cleaning, polishing, fueling, ordnance, maybe a little adjustment on the gun or hard points etc. and occasionally some body work/repair, just about everything else is swapped. This swapping out means that an aircraft can be turned around quickly, and doesn't have to wait until the specified hours of maintenance have been performed. In other words it could actually be back in the air as hours of maintenance are still being performed. When the hours are figured (maintenance hour per hour of flight, mean time between failure) or whatever the "bean-counters" want to know, it usually included all the maintenance hours throughout the system organizational, intermediate, or depot. (New manufactured items are not included in these calculations but may be in other service wide figures. As everything is in the computers, these figures can be easily recovered for an individual part, aircraft, squadron, wing, ship, fleet, service, manufacturer, year, month day, hour, what ever keeps people happy, and employed.) And as with all figures, people can manipulate them to show just about anything they want to show in any light. In fact many build a career on doing just that. |
#25
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Persian Tomcats in service
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In article , "Diamond Jim" wrote: solid. The more modern an aircraft is, the more it is "plug and play" to borrow a computer term.the aircraft is. Just about everything is a SECREP (secondary repairable). Organizational Maintenance will unplug and swap boxes, board, modules etc. on the aircraft, replace with new/repaired items, test and if passed "up the system". If it fails then another is plugged in its place. Heck even bad wires are replaced as part of a harness assembly. The SECREP then goes to Intermediate or Depot Maintenance for repair, and after repair it goes back into the supply system. About the only, "old time maintenance" that takes place on an aircraft anymore is cleaning, polishing, Certainly modern systems are more reliable than older ones. However, correct me if I'm wrong, but it is not simply the issue of having "plug and play" systems, but also sufficient spares to replace them. It doesn't matter if you can pull the faulty system out of the aircraft and send it off to maintenance if you don't have a replacement. No replacement and the aircraft sits until the system is fixed. D |
#26
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Persian Tomcats in service
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#27
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Persian Tomcats in service
Mike Kanze wrote:
However, the article that I refer to does make some interesting points that the Iranians have managed to keep a lot of vintage American equipment in service despite all odds. Something none of us should discount. Lookit the 1950s vintage American cars that still haunt Havana's streets. Or the 1950's vintage American cars that some clever Cubans turned into boats and tried to drive to Miami. ALV -- Mike Kanze "As far as the laws of mathematics refer to reality, they are not certain; and as far as they are certain, they do not refer to reality." - Albert Einstein "DDAY" mailto wrote in message k.net... ---------- In article .com egroups.com, wrote: tone of their reporting seems to imply a bias toward the Iranians. And they seem top have good access to unimpeachable sources inside Iran. Were it not for their astute reporting, we would never know what was going on inside Iran. I think this is an overstatement, or at least a misstatement. You are implying, essentially, that they are tools of the Iranian government. But that's clearly _not_ the case. In their F-14 book they make it quite clear that the Iranian revolutionary government has been pretty repressive towards the air force and the pilots. This is actually understandable, because the Iranian pilots were trained in the 1970s by the US and naturally a revolutionary government would be suspicious of these people. Cooper makes clear that many of his sources are ex-pat Iranians--people who left the country even as late as the mid-1990s. Not all of these people would necessarily be against the current government, but a fair number of them certainly are. My interpretation of this is that Cooper and Bishop are essentially a couple of guys who have a major interest in the Iranian air force and are impressed by it, but certainly not pro-Iran. They could be characterized as "pro Iranian air force" while "anti Iranian government." But they're more likely simply buffs who think that the Iranian air force is interesting--and cool. That doesn't imply sympathy toward the government, or any kind of government sanction. I think that they've probably built up sources over time and these sources trust them to greater or lesser extent. My concern is less with their bias than with their analytical methods. Bias is easily detectable, but methods are not. I don't know how careful they are at checking their information. I'm not saying that they're bad at it, only that I don't know how carefully they check it. For instance, if one person tells them something do they report it, or do they only report it if they can confirm it from another source? We don't know that. Fortunately, some of their claims are proven by their photographs. We can tell, for instance, that Iran was still showing off its F-14s as recently as 2004. And although they did not put an AIM-54 missile on display, they did display a training round, which obviously implies that they still train to fire these missiles. Thanks for correcting me on our supply of curise missiles. It is nice to have 2000 on hand and to be able to expend 300 in a day or two's worth of attack. The exact number is classified, but I believe that the last time I saw a discussion of this in a military journal they said that the number was "over 2600." area be raked over by SEAD Vipers, F-15E's dropping bombs on value targets with cruise missiles hitting air bases to maximize confusion and F-15C's doing air interdiction of enemy aircraft and all steps being taken to ensure that the SAM belt is completely eliminated before the B-2's come. You want to get them all the very first time, but you never know what may happen. The Golden BB is the thing aircrew fear the most. I don't think there is any point to playing armchair general and positing highly speculative scenarios about how a war would be conducted. However, the article that I refer to does make some interesting points that the Iranians have managed to keep a lot of vintage American equipment in service despite all odds. The one thing about the F-14 is that its Phoenix missiles would make it a threat from long range. They could stay well within the air defense umbrella and fire at distant American targets. If the article is correct and at least a couple of dozen aircraft remain operational, then they could present a problem to any American air campaign. The threat to US aircraft is certainly greater from SAMs than aircraft, but that has been the case for decades. D |
#28
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Persian Tomcats in service
i would put my $ on the us navy over
any irian'ian navy....time will tell, we have controlled that area now for 15 years....i am sure our boys know their "way around"...... |
#29
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Persian Tomcats in service
Certainly hours are being saved where they count most - at the tip of the spear.
But what's really happening here is that some of the needed maintenance hours are transferred from the squadron level to the intermediate or depot levels. (Presumably the other hours saved have come from quality and reliability improvements: Tom generation versus Bug generation versus SuperBug generation.) A total cost of ownership (TCO) analysis of the entire aircraft fleet and the spares inventory supporting it would show the real total maintenance hours/$. Unfortunately, I am also realistic enough to know that if you're a squadron skipper and it's not all coming out of your own pocket, you will rightly give a rat's fanny about the rest. -- Mike Kanze "As far as the laws of mathematics refer to reality, they are not certain; and as far as they are certain, they do not refer to reality." - Albert Einstein "Diamond Jim" wrote in message ... "Harry Andreas" wrote in message ... In article .com, "~^ beancounter ~^" wrote: in going through some old navy paperwork i came across this.. "the f14 requires 50 to 60 maint hrs every hour it flies, while the super hornet needs 10 to 15 maint hrs for each flight hour... if true, thats a hell of a difference... Those are more or less the numbers that I've heard. BTW, the maint hrs/flt hr is still going down. It's lower on the E/F than the C/D (so I've heard). -- Harry Andreas Engineering raconteur Having had the additional duties several times as Asst. MaintO and MaintO in a squadron, (for earlier generations of aircraft) and spending a number of years in DOD (mostly DARPA), I can tell you that those figures are pretty solid. The more modern an aircraft is, the more it is "plug and play" to borrow a computer term.the aircraft is. Just about everything is a SECREP (secondary repairable). Organizational Maintenance will unplug and swap boxes, board, modules etc. on the aircraft, replace with new/repaired items, test and if passed "up the system". If it fails then another is plugged in its place. Heck even bad wires are replaced as part of a harness assembly. The SECREP then goes to Intermediate or Depot Maintenance for repair, and after repair it goes back into the supply system. About the only, "old time maintenance" that takes place on an aircraft anymore is cleaning, polishing, fueling, ordnance, maybe a little adjustment on the gun or hard points etc. and occasionally some body work/repair, just about everything else is swapped. This swapping out means that an aircraft can be turned around quickly, and doesn't have to wait until the specified hours of maintenance have been performed. In other words it could actually be back in the air as hours of maintenance are still being performed. When the hours are figured (maintenance hour per hour of flight, mean time between failure) or whatever the "bean-counters" want to know, it usually included all the maintenance hours throughout the system organizational, intermediate, or depot. (New manufactured items are not included in these calculations but may be in other service wide figures. As everything is in the computers, these figures can be easily recovered for an individual part, aircraft, squadron, wing, ship, fleet, service, manufacturer, year, month day, hour, what ever keeps people happy, and employed.) And as with all figures, people can manipulate them to show just about anything they want to show in any light. In fact many build a career on doing just that. |
#30
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Persian Tomcats in service
In article , "Mike Kanze"
wrote: However, the article that I refer to does make some interesting points = that the Iranians have managed to keep a lot of vintage American equipment in service despite all odds. Something none of us should discount.=20 Lookit the 1950s vintage American cars that still haunt Havana's = streets.=20 I haven't located a copy of the magazine yet, but keeping a missile in service is slightly more complex than a 50's era car. -- Harry Andreas Engineering raconteur |
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