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Bager1968

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Viewing 15 posts - 61 through 75 (of 3,360 total)
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  • Bager1968
    Participant

    IIRC, best F-14s in terms of maneuverability, speed and climb were late F-14As equipped with new TF-30-P-414As, which gave 25100 lbf thrust. Its true GE-F110 gave additional 2000 lbf thrust, but latter variants gained much more significant weight. New engines did reduced compressor stalls though.

    Sorry, the TF30-P-414A was exactly as I described. It is true that the F-111F got 25,100 lb thrust TF30-P-100s & 25,111 lb thrust TF30-P-111s – but the F-14 never got those upgraded engines!

    The data in the following 1985 link is exactly what I have seen in every source for the TF30-P-414A:
    http://www.flightglobal.com/FlightPDFArchive/1985/1985%20-%200882.PDF

    in reply to: LRS-B #2230124
    Bager1968
    Participant

    Lets hope that it won’t cost as much as the B-2, at $1 billion is easily the worlds most expensive aircraft.

    If the originally-planned 132 B-2s had been built (instead of the actual 21), the “per aircraft” procurement cost would have dropped from $929 million to the low-$800 million range (if not into the high $700 millions). Note that the program cost (including development, engineering, testing, and procurement) averaged $2.1 billion per aircraft in 1997, and with 6 times as many aircraft to spread the DE&T cost across, that would be around $1.1 billion program cost per aircraft.

    Bager1968
    Participant

    His comments make it plain he flew in only F110-equipped Tomcats, otherwise he would not have made that comment about being able to add power and outrun the Hornet in the vertical – the TF30-equipped F-14s could not do that (20,900 lb thrust each vs 27,000 lb each for the F110).

    in reply to: Did the Luftwaffe make the right choice with the F-104? #2230134
    Bager1968
    Participant

    Including only the Super Tiger, the BAC Lightning, the prototype for the F-5 was a bit short sighted.

    The F-5 was designed as a low-cost ground-attack-primary fighter-secondary aircraft.

    The Super Tiger was an all-weather multirole fighter/ground attack design, and the Lightning was an all-weather interceptor-only aircraft.

    Three different aircraft for three different roles.

    in reply to: "MesserSpit" #921656
    Bager1968
    Participant

    As noted in antoni’s link above.

    in reply to: Frankenplane Prototypes #2230800
    Bager1968
    Participant

    That actually looks good!

    in reply to: PLAN News Thread #4 #2024934
    Bager1968
    Participant

    There is another article in this series here and it sheds light on a previous topic of conversation:

    However, that link redirects to a registration/subscription form, which if you close without registering redirects you to the “international news” page. I chased links down to the link you used above, but clicking on it just repeats the process.

    The other two links, the ones I quoted, redirect to the registration/subscription form as well – but then take you to the article when the form is closed without registering.

    And no, I am not registering or subscribing – I will allow no computer in Russia/China/NK/etc access to my computer in any way.

    However, thanks for the quote from the article – so the PLAN just had to translate the “40 tonnes of blueprints” into whichever Chinese language the shipyard/PLAN use. That would take quite a while by itself.

    in reply to: PLAN News Thread #4 #2024966
    Bager1968
    Participant

    http://www.scmp.com/news/china/article/1681710/sea-trials-how-one-man-bought-china-its-aircraft-carrier
    http://www.scmp.com/news/china/article/1682731/mission-impossible-ii-battle-get-chinas-aircraft-carrier-home

    In which the man who bought ex-Varyag admits: he was working for the PLAN from the start (which he lied about at the time), lied to the Ukraine to get the contract signed (the contract included a clause that the ex-Varyag was never to be made operational), lied about the presence of the engines in order to convince Turkey to let it be towed through the Bosporus and Dardanelles Straits – and the Chinese government supported those lies, telling everyone that it was not involved and that the purchase was only a private sale for the purpose of turning the ship into a casino.

    Entrepreneur Xu Zengping was head of the Chong Lot Travel Agency, a Hong Kong-based company, which bought the hulk from the Ukraine.

    Chong Lot was owned by Chin Luck (Holdings) Company of Hong Kong; four of Chin Luck’s six board members lived in Yantai, China, the location of a major navy shipyard*, the chairman was a former career military officer with the People’s Liberation Army.

    in reply to: Breguet 941S STOL transport info #2231628
    Bager1968
    Participant

    Thanks, sandiego89.

    in reply to: Breguet 941S STOL transport info #2232297
    Bager1968
    Participant

    But when you look at STOL performance, you see quite a difference. The 941 could take off over an obstacle in 787 feet, the Buffallo and G.222 in around 1,200 feet. Landing performance of the 941 equally impressive. VERY impressive STOL characteristics, even over the Buffalo and G-222 which have good STOL performance.

    I haven’t seen those performance numbers. Where did you find them, and could you post them?

    in reply to: Lessons from Textron Scorpion… #2232300
    Bager1968
    Participant

    Oversight needs to be in the correct places to be effective.

    The F-35 etc have had massive quantities (and multiple layers) of oversight – almost all of which was looking mainly at the top-most levels of the program.

    The problem is that issues only show up there after they have caused disruptions and delays throughout the program.

    Oversight of the individual sections and areas of development and design, combined with oversight of the overall program, would have been much more effective – even if smaller overall – than what was actually done.

    in reply to: F-35 News, Multimedia & Discussion thread (2015) #2232304
    Bager1968
    Participant

    The latest series of documents from Edward Snowden via Der Spiegel reportedly includes details on F-35 data known to have been obtained by Chinese intelligence:

    The Age

    The leaked document shows that stolen design information included details of the JSF’s radar systems which are used to identify and track targets; detailed engine schematics; methods for cooling exhaust gases; and “aft deck heating contour maps”.

    Mind you, “many terabytes of data” sounds more like someone with physical access to the network infrastructure, not “cyber-espionage”.

    The article is a bit “compressed”.

    The “aft deck heating contour maps” were of the B-2, not the F-35.

    Which shows that this was much more than just an F-35 security failure.

    in reply to: Frankenplane Prototypes #2232308
    Bager1968
    Participant

    And then my own image hacks…

    [ATTACH=CONFIG]234690[/ATTACH]
    F-38 Demon Crusader

    OK – you take away the only good feature of the Demon (its large Sparrow-capable radar) and install the smaller (shorter-range/worse capability) non-sparrow Crusader radar.

    I guess.

    in reply to: LRS-B #2232669
    Bager1968
    Participant

    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.

    The SFC numbers I have found for the F135 are much lower than what you claim.
    I have seen:
    .886 dry and 1.920 wet
    .70 lb/lbt/hr (dry), 2.0 lb/lbt/hr (with afterburner)

    Yes, these are far apart (dry), but both are well below your number (whatever its source).

    in reply to: Dassault Rafale, News & Discussion (XV) #2233189
    Bager1968
    Participant

    Rafale = French warplane

    Rafael = Israeli company or Italian painter.

Viewing 15 posts - 61 through 75 (of 3,360 total)