Commercial CF34-10 follows a 7/10 Program. 7,000 hours or 10 years, whichever comes first.
Commercial CF6-80C2 with the FADEC has been reaching 20,000 to 24,000 on new engines and 16,000 to 18,000 hours after one overhaul.
The CF6-80C2 is a big leap in efficiency when it comes to lifetime costs for a 20-year to 25-year period.
Commercial engines do not experience anything near that of military engines so the commercial stats are irrelevant.
Until I read that the B-52H typically cruises at 25% power setting and uses no more than 80% at takeoff, it made me realize most of the time all eight engines are causing more drag than benefit. I’d like to at least see a drop to four engines.
The turbo-fans eliminated the need for the water needed for a water-injection on take off; thereby increasing fuel load.
Aircraft fly at the minimum throttle needed to perform a task so your pointing out the cruise setting is pointless.
Reducing to four engines would serve no purpose period or it would be being looked at which it is not.
/Salute
I work hard at delivering improvement in one fell swoop. Eight high tech engines is going to cost a boat load over 25 years. Instead of two main engines and a pair of spares you get eight all running at the same time.
LOL, yes, lose one engine and if you are fortunate you take the silk ride, less fortunate they picky your remains out of the rubble.
The guns were removed after the first Iraq war when a B-52 locked onto a U.S. fighter the fighter thought it was a sam and fired an anti-radiation missle that did not shoot down the bomber but did seriously damaged it.
Hobbit – Battle of five Armies or something like that.
Of the last three, only the middle one is really worth watching.
How can a thread based on the experiences of an actual fighter pilot turn into this lets pretend garbage it is at now?
it is quite probable these are very personal opinions
You really think so?
You don’t think that an actual pilot who has thousands of hours in fighters is just reading a pre-printed document.
Go figure.
We here all know better than those who actually flew the planes.
Do you have more details on Hartmann testing? F-104 affair caused his retreat from the Luftwaffe, as he opposed F-104 acquisition. I am sure this caused a lot of friction with other former Luftwaffe aces, but I have not found anything.
Sadly no I do not.
I found out about it in a book on the Six a long time ago.
Infra-red missiles were used successfully in that manner in ‘Nam.
You’re a long way off topic. What does the F-106 have to do with a discussion of fighters for the Luftwaffe?
FYI, no, the F-106 was not ‘bigger’ than the Buccaneer. It was 2 metres longer – but slimmer, shorter wingspan, & quite a lot lighter. And range comparisons between them are pretty meaningless. They were designed for completely different purposes & operating environments, & neither could do what the other could. Nor is the developed or undeveloped state of the J-75, or McNamara’s policy on the F-105, at all relevant.
Hartmann, who flew the Six, said if Germany could have afforded it, they would have bought it.
Japan was offered a multi-role Six but chose the F-4.
You are the one who said the engine in the Thud, same as Six was not efficient but the J-75 was a very efficient turbojet which is why the both the Thud and Six had the long range they did.
The F-106 had a combat radius of 417 nmi on internal fuel and 725 with externals. This is flying an intercept mission, average altitude over 38,000 feet. The F-106 had good range but not the fantastical numbers some like to attach to it.
The F-106 mission profile was hi-hi-hi as it was an interceptor. The Buc was a strike aircraft, and as such did not fly at the altitudes of the F-106. Comparing range is tricky unless you have the fight manuals and can compare for the same type of mission.
You are correct about combat range, I made the mistake of using the Wiki and should have known better.
From the Six site, combat radius was 575 miles on internal fuel, while CRGIS puts its max. range at 800 nm.
Few sites agree on what a Six could do and as one of the pilots at the Six site said, ” It depended on the mission and the parameters one is using.
One pilot though, who actually wanted to know, found out by doing it, the ferry range, and still have the required amount, by higher ups, of fuel onboard on landing was a much greater than official numbers.
Well, the Wiki entry does not say “ferry” for the Buccaneer range like it does for the F-105.
In fact, that 2,300 miles for the Buccaneer is listed elsewhere as “typical”.
Note that the normal operational mode of the F-105 in Vietnam was to install the 1,300l ferry tank in the internal weapons bay, and carry all the ordnance externally. This means that in ferry mode it had both this tank and underwing external drop tanks.
The Bucc had a 2,000l internal ferry tank for its weapons bay, but that was never carried on a combat mission, so I believe that is where the similarity of Bucc and F-105 ranges comes from – F-105 entering combat with the internal ferry tank and the Bucc without.
This site gives the combat range of the Buccaneer.
http://www.fas.org/spp/aircraft/table_ag.htm
The F-106 which was larger than the Bucc. had a combat range of 500+ miles and it was extremely aerodynamic and fuel efficient so there is no way the Bucc. would ever get close to the combat range of Six.
Pilots who flew it said its true ferry range was a good deal more than listed.
The engine in the Thud was near the same as the Six and either way the J-75 was very undeveloped engine as the effort that would have gone into the J-75 was put into turbo-fans when thy decided to build no more F-106 aircraft, same would have been for the F=105 for which production was stopped ONLY due to R. Strange McNamara’s asinine infatuation with the F-111.
Pilots in ‘Nam wanted more Thuds but McNamara made sure no more could, not would, could be built.
They used the Phantom because they had not other choice.
Buccaneer had longer range & endurance. It could carry more bombs further. Nobody ever flew an F-105 across the Atlantic without refuelling. On the deck, with an internal load, it was very hard to intercept. It would have been vastly better than F-104 at anti-shipping strike (something which AFAIK F-105 was never tasked with, but for which the Germans used F-104) – well, as soon as it got a better missile for the role than AS.30, which it did eventually.
The Buccaneer and the F-105 had similar combat and ferry ranges.
In a war zone the F-105 could exit a combat area at a speed that nothing in the air could catch, without exception.
Let’s compare two engines, one military and one commercial:
* F-135 is 46 inches in diameter, produces 28K lbs dry thrust, likely weighs 3800 lbs without afterburner, and would have an installed SFC of about 1.0
* PW6000 is 56 inches in diameter, produces 24K lbs dry thrust, weighs 5000 lbs, but the SFC is only 0.6.
Because the specific fuel consumption of the commercial engine is only 0.6, it can provide a combat radius almost twice that of the military engine. Any Chief Engineer would make that tradeoff in a heartbeat.
Ten inches in diameter and three-quarter tons of weight means far more to those building an aircraft.
as i have explained the missiles have 2 ways datalink so it not Fully autonomous, it also have EO seeker to help identify enemy aircraft type (working in kind of the same principle as SLAM-ER)
The missiles can be used to attack AWACS, tanker, or launch again enemy aircraft carrier group…
LOL, the U.S. SAGE system in which the pilot was supposedly a last ditch part of the system was found to be a failure shortly after it was put into use, and that system at least had a pilot who could override the distant controller if need be yet you want a unmanned armed thing flying around with nothing to bring it back when the snafu hits, good grief.
People with such ideas are why so many doomsday movies were made in the late fifties and early sixties.