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Robert Hilton

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Viewing 15 posts - 181 through 195 (of 673 total)
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  • in reply to: question about Boeing XF-36 stealthness #2435504
    Robert Hilton
    Participant

    Would it be a problem to place the engine out of alignment with the air intake, around a bend or something?

    I’m no engineer, would it cause air-feed problems :confused:

    Just thinking it might hide the fan blades?

    Bending the air causes a certain amount of loss, dependant on the the severity of the bend, intake length and speed.

    in reply to: Bruntingthorpe Victor Video #1185298
    Robert Hilton
    Participant

    Not sure if any of you have posted this already.
    http://www.youtube.com/watch?v=Rh2YSzBdWFg

    in reply to: F-22 can Super Cruise for only 100 Nautical Miles #2437441
    Robert Hilton
    Participant

    Sorry, “8200 kg” is public consumption data. Official data is 20,650 lbs.

    I have explained previously where I believe the difference comes from.

    And your numbers did not even add up to 8200 kg – so either way your numbers are BS..

    Out of interest, why is the fuel load of an a/c such sensitive information that they have to publish misleading “public consumption” data?

    in reply to: KC767, KC45 ….. Latest news! #2437443
    Robert Hilton
    Participant

    Or simply buy from a proven supplier that has been giving them air-refuelling tankers for over 50 years – Boeing.

    Some 58 years now I believe. Flight Refuelling Ltd converted the first Boeing (B29) in 1951 if I recall correctly.

    in reply to: KC767, KC45 ….. Latest news! #2438529
    Robert Hilton
    Participant

    One should not forget that the KC-767 matches the original requirement to 100%, Boeing has 50 years of experience in tanker building and supporting the tanker fleet.

    So Boeing invented in flight refuelling?

    in reply to: Scrapyard Photos; Any More? #1195733
    Robert Hilton
    Participant

    Does the VC10 not have a Zero Stage on its conways then? We often wondered what the compatability of parts would be between aircraft (CSDU, starters etc)

    I’ve only seen one VC10 Conway briefly at Southall. I didn’t pay much attention to it, but it was somewhat different to the RCo17. I’m not sure if they zero staged them, it is difficult to see externally, you have to look inside the engine.

    in reply to: Scrapyard Photos; Any More? #1195974
    Robert Hilton
    Participant

    Unfortunatly so, they have an extra stage or two I believe, I don’t know whether the accessories are the same though.

    It was in fact one stage, called the zero stage. It was hung in front of the fwd bearing. I have one in my front garden, a zero stage that is.

    in reply to: KC767, KC45 ….. Latest news! #2439126
    Robert Hilton
    Participant

    No, the reports says exactly the opposite. That the Boeing offer in fact met more requirements & was superior on more (& higher priority) requirements than the NG/EADS offer.

    You should stop drinking that Boeing kool-aid.

    in reply to: KC767, KC45 ….. Latest news! #2439531
    Robert Hilton
    Participant

    The report says alot of things to alot of different people as PFCEM proves.
    What it says to me is that both offers meet the requirements although the NG exceeds more (but not all) of them than the Boeing.
    Also the method of calculating the costs has favoured NG more than Boeing. I assume that the they do have an intimate knowledge of how Boeing (or NG for that matter) presents the costs during an RFP compared with the actual costs when it is translated into real cost per unit ordered.
    My reading of it is that the airforce chose the a/c because they thought it was better but, but that they hadn’t specified it and that is what the GAO are pulling them up on.

    in reply to: KC767, KC45 ….. Latest news! #2439767
    Robert Hilton
    Participant

    I have supported my claims with facts.

    You have supported your claims with more claims and figures that are just conjoured up. You have constantly proved that your only talent is to argue the toss. You have no experience or knowledge in the field but you can talk up a storm.
    You talk the talk but you can’t walk the walk.
    Give it a rest and let the more informed show us the pro’s and con’s, you can’t.

    in reply to: F-22 can Super Cruise for only 100 Nautical Miles #2439777
    Robert Hilton
    Participant

    Not sure I follow – the fuel tanks (aviation or maritime) have say volume of 10m3 (10,000 litres).

    Depending on the ambient temperature, batch, type and grade of fuel the mass that will fit in that fixed volume will vary.

    When an aircraft is refuelled from either fixed hydrants or a tanker truck, I would have thought you’d shut off the refueling process when the tanks are 95% full (or whatever) and this would be based on the volume (litres, USG, etc)?

    What do the cockpit fuel guages/readouts display – kg/lbs or L/USG?

    I can see the argument for kg – the engine is after energy released per value of measurement (be it volume or mass).

    Gauges read in lbs or Kg. Whilst being usefull for weight and Cof G, it is very important for range. SFC (specific fuel consumption) is expressed in lbsthrust/lbs fuel/hour or Kg thrust/Kg fuel/hour.

    in reply to: F-22 can Super Cruise for only 100 Nautical Miles #2439949
    Robert Hilton
    Participant

    The fact that that error was not noticed & corrected just goes to show how little liters mean in the US with reguard to fuel capacity.

    When it comes to gas turbine engines in aviation, litres or gallons have little meaning. It’s pounds or kilograms that tell you how far it’ll go.

    in reply to: AVRO Woodford #1200615
    Robert Hilton
    Participant

    It did, but its engines and intakes were removed for radiation testing purposes.
    However it seems the Woodford chunks were white so wouldn’t fit with ‘190

    Agree wholehartedly with AK and JDK, however it is sad to see some of the factory sites go.

    I had assumed they were talking about the stress airframe. That was located at Woodford. It being scrapped in 93-94 would be about right. 190 was scrapped much later I believe.

    in reply to: AVRO Woodford #1200783
    Robert Hilton
    Participant

    Possibly from XL190, its Conway engines, complete with ripped off intake sections, went for radiation testing – I didn’t know where, but sounds like the above.

    I thought that XL190 went to St Mawgan and was scrapped there.

    in reply to: Air bases in Scotland #2440304
    Robert Hilton
    Participant

    Is anything happening at Macrihanish??

    I have heard rumours that Qinetiq and the Skunk Works have tested some interesting kit out of that base over the years.

    Certainly not in my time there.

Viewing 15 posts - 181 through 195 (of 673 total)