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Robbiesmurf

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Viewing 15 posts - 316 through 330 (of 473 total)
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  • in reply to: Baggage compartments in Fighter aircraft #2192658
    Robbiesmurf
    Participant

    I have sent motorcycle spares to Ascension Island in the ’80’s in a Victor being rotated. I was just back from my stint there and was helping out one of the locals.

    in reply to: Baggage compartments in Fighter aircraft #2192688
    Robbiesmurf
    Participant

    Oh, I forgot, the Vulcan used to carry a pannier in the bomb bay. It looked like a skip.
    I did a few loads of kippers and whisky in the skip at RAF Machrihanish for the Waddington wing……

    in reply to: Military Aviation News-2015 #2192801
    Robbiesmurf
    Participant
    in reply to: BCWM's Jaguar GR.1 Roll-Out #917043
    Robbiesmurf
    Participant

    Seen it on FB very nice.

    in reply to: Baggage compartments in Fighter aircraft #2193466
    Robbiesmurf
    Participant

    Lightnings, very little. Jags, a pod and ammo boxes. Buccaneers, bomb bay. Victor, no 4 freight bay and bomb aimers position.

    in reply to: Victor XL231 And Nimrod XV250 Work Diary MkII #918269
    Robbiesmurf
    Participant

    Nice work, nice photo’s

    in reply to: Low Level…… #2193838
    Robbiesmurf
    Participant

    http://i.imgur.com/CJeNA9p.jpg

    RAF Swinderby?

    in reply to: Military Aviation News-2015 #2194080
    Robbiesmurf
    Participant

    Lost in translation?

    in reply to: Airwar in the 80s WP vs NATO #2194085
    Robbiesmurf
    Participant

    I know, that’s what I said on post #7. I speak from personal experience of course………

    in reply to: Argosy parts needed… #920828
    Robbiesmurf
    Participant

    You could also ask these people if they have a few over…
    http://www.aels.nl/

    in reply to: Dynamic engine thrust setting #2194139
    Robbiesmurf
    Participant

    Then after the next flight your spare engines will also require an overhaul. Looks like your whole fleet will be grounded in no time.

    That is why the ‘Elephant House’ was built so the engines could be overhauled and ground-run on base. It was a refreshing change for me to see, quiet, clean and ergonomically well established, quite a change from my Spey days……..

    in reply to: Dynamic engine thrust setting #2194257
    Robbiesmurf
    Participant

    An aircraft sitting in a hangar for an engine overhaul is as useful as a downed aircraft.

    Which is why the military also order spare engines? The Tornado’s were ordered with one spare each……………
    Double ECU change on a Tornado, about 4 hours.

    in reply to: Dynamic engine thrust setting #2194434
    Robbiesmurf
    Participant

    The JT8D was advertised due to it’s modular construction of ‘100,000 hrs on the wing’. The fact that most modules had been changed a couple of times leaving only the diffuser casing with the serial number on the wing was a minor consideration…………………

    The variable thrust nozzle might not be replaced but I’d imagine that combustion chambers and turbine components would. Also simple things like bearings, high energy igniters, pumps etc….

    The life-extending blade cooling system is not new. The single-crystal components, again not new but indeed improved. The materials have also been improved. RR used a variety of nimonic alloys at the start of reheat. Nimonic 75, Nimonic 80 and C263 alloys. All of different metals and compositions. What they use now I don’t have any info over, yet…………..

    in reply to: Dynamic engine thrust setting #2194462
    Robbiesmurf
    Participant

    Modern engines are good for thousands of hours ( 8000h for the F135? ), so I find it hard to believe it would be impossible to get 10% more thrust in case of emergency for a few minutes.

    Otherwise it can’t do it so either it has to use the AB on a reduced setting to stay supersonic or it will be forced to decelerate in subsonic.

    It’s not just heat but also rpm and cycles. RR RCo17 conway on the Victor 2000 hrs between overhauls . VC10 engine RCo43 many, many thousands of hours between overhauls due to the longer flights and less ‘playing’ with the throttles.
    RR Adour Modular construction. Hot end was changed quite regularly
    RR Spey 101 1000 hrs
    RR Avon 302 600 hrs
    RB 199 again modular, hot end changed regularly.
    8000 hrs between overhauls? Very doubtful.

    Reheat is in general variable. Full bore and nothing else is like riding a turbo motorbike, fun but tricky………

    in reply to: Dynamic engine thrust setting #2194591
    Robbiesmurf
    Participant

    There are some indication, that the 117S engine on Su-35S has a similar thrust setting.

    AB = 14.000kgf
    Full AB = 14.500kgf

    What is the max dry thrust?

Viewing 15 posts - 316 through 330 (of 473 total)