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Cliff Barnes

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Viewing 15 posts - 31 through 45 (of 183 total)
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  • in reply to: Flybe grounds several aircraft amid safety scare #591971
    Cliff Barnes
    Participant

    Just a short comment; SAS has had two landing gear failures (or crashes) with the dash:es. On 9/9 one landing gear collapsed during landing in Aalborg, Denmark, and this morning one landing gear collapsed on another airplane of the same type operated by SAS in Vilnius, Lithuania.

    After the first incident Bombardier claimed it to be an isolated failure. When SAS plane number two went down SAS grounded it’s whole fleet.

    Cliff Barnes
    Participant

    Boys, as you all know, radar cross section area is dependent on the angle between the target and the radar transmitter. If we keep that in mind I’m pretty sure the Euforighter mob will find certain aspects where it’s close to zero.

    Regards,
    Cliff

    in reply to: Look for an erotic advert near your airport! #517301
    Cliff Barnes
    Participant

    Well, this thing has been done before. In Sweden the national railway company SJ made commercials in the fields just outside Swedens three biggest airports. The commercials were aimed at SAS and showed how much cheaper they would have arrived by train…

    Regards,
    Cliff

    in reply to: Austria – down to 15 (used) EF2000 #2539517
    Cliff Barnes
    Participant

    Could someone give us a little short re-cap of how this tender went so wrong?

    I reckon they were offered 24 Gripens or 18 Eurofighters – and now they end up with 15 tranche 1 Eurofighters. Doesn’t make sense at all.

    Regards,
    Cliff

    in reply to: European fifth generation fighter? #2540367
    Cliff Barnes
    Participant

    Does UCAV ring a bell?

    Regards,
    Cliff

    in reply to: Plane on conveyor, would it take off ? — HELP!! #524824
    Cliff Barnes
    Participant

    The lift for an aircraft is provided by the flow of air around the wing as it moves forward down the runway. If it is standing still, albeit with it’s wheels spinning on a conveyer type runway, there is no forward movement, hence no lift, hence no take off..

    1L.

    Couldn’t said it better myself, totally agree on this.

    in reply to: New Eurotrainer Programme #2535137
    Cliff Barnes
    Participant

    The latest AFM has a brief article on page 10 re a new programme to produce a common training system based around a new jet. It shows a 1/30 model of an inital concept proposed by SAAB.

    Do you have a picture of it?

    Regards,
    Cliff Barnes

    in reply to: Why have nearly identical aircraft? #2535172
    Cliff Barnes
    Participant

    Why do many airforces purchase two completely different aircraft at about the same time and yet use them for exactly the same role?

    An example of this would be the AH-64 Apache and the AH-1 Cobra, two attack helecopters serving exactly the same role often side by side. The cost of having to have two completely different sets of almost everything (men and equipment) and running two different training programmes for must surely cancel any benefits gained by having two different helicopters.

    In the RAF why are Jaguars and Tornados used for the same role of ground attack? I thought when the Tornado was developed initially as the MRCA in the late 70s it was to supersede the Buccaneer, Jaguar and Vulcan in RAF service yet in 1991 during Gulf War 1 the Tornado, Buccaneer and Jaguar all flew smetimes together.

    Just my two cents:
    Because that new and fancy fighter you developed became so expansive that you couldn’t afford changing fighters on a one-to-one ratio. So in order to keep the original number of operational fighters – you’ll need some of the old ones…

    in reply to: Libya making big ticket weapons purchases #2535173
    Cliff Barnes
    Participant

    Well, for such a small Air Force two types are very costly. As for a high/low mix at least the F-15/F-16 combo shared the same engines (i.e. F-100) and to a lessor degree so do the F-22/F-35. (i.e. F-119/F-135)

    I would like to elaborate on this since I share your thoughts. Eventhough a hi/lo mix might seem as a nice approach on paper it may not be the best solution for a country. It all depends on what type of fighters, and how many, there are to be bought.

    The initial costs for buying tools and equipment, training of technicians, pilots and more becomes extremely high if you calculate the cost per fighter when ordering just 12 fighters each. And the logistics will become just as expansive. To this you could add the fact that the two fighter types aren’t that similar.

    If we should speak about a really effective hi/lo mix I would say putting Swedish and Finnish airforce together would be a clear one. You’ll have two fighters that makes a good combination performance wise, you’ll cut the training costs by having nearly the same engine (F-404) and weaponry (Amraam, Sidewinder etc) and you’ll have a decent amount of fighters of each kind (about 200 Gripens and 70 Hornets).

    Regards,
    Cliff

    in reply to: Libya making big ticket weapons purchases #2535414
    Cliff Barnes
    Participant

    I agree on it seeing a little bit odd to buy 12 fighters of each kind – 18 Flankers would make more sense. Eventhough I’d rather see no fighters being sold to Libya at all.

    Regards,
    Cliff

    Cliff Barnes
    Participant

    So Dorith, how’s it gonna be – was the 787 a carbon copy of A330 or not?

    Your only friend,
    Cliff

    Cliff Barnes
    Participant

    Yes and no. Northrop, who certainly knows a little bit about stealth, didn’t produce a design that is a virtual carbon-copy of the X-47. Neither did Lockheed. Their designs have all differed significantly. I mean seriously the Neuron team could damn near use the molds for the X-47 to make the skin of their aircraft. I guess the ammusing part to me is CB’s rabid denial that they are virtually carbon copies in form and that somehow the Neuron is completely unique.

    Ok Dorith, let’s get down to business then?

    What annoys me is that just because you see some similarities in the skin and shape of two airplanes you draw the conclusion that those are carbon copies of each other. I’ve said it before and I’ll say it again – they are both the results of solving the same problem.

    If we would apply your tactics to the civilian market one could say that Boeing 787 is a carbon copy of A330 but somehow I seem to think that even you Sferrin could understand how wrong that argument would be.

    When it comes to these UAVs you don’t know a sh!t about how the airframe structure is made and of what material, what engine and inlet technology they’re using, what centre of gravity and aeronautical centre they have (which will affect control laws and thereby agility) and so on and so on. Yet you stand there shouting carbon copy to each and every one on this forum.

    Is it really that hard to believe that they, just as their american competitor, have tested several configuration before arriving at this one because it might be the best one they’ve tested?

    Cliff

    Cliff Barnes
    Participant

    What aircraft are you working on specifically (assuming you can say)?

    Sorry, don’t want to get into the details.
    (You’ve got a pm mate.)

    Regards,
    Cliff

    Cliff Barnes
    Participant

    That’s priceless. Since you can’t see any difference you resort to mud slinging instead..

    Thank you sir! Was feeling a little bit sarcastic tonight and I’m glad someone enjoyed it.

    Well keep telling yourself it’s an original European design if it makes you feel better about yourself.

    As a matter of fact, I actually intend to do so. This might be because I’m out of cash to pay my therapist – or – it might be because I’m an aerospace engineer having worked in this very field.

    And, oh, forgot to mention – nowadays I work for an american aircraft manufacturer but please don’t go tell the redneck boys at home that there are foreigners designing upcoming american-state-of-the-art airplanes. That would hurt their feelings badly.

    Glorious greetings to you my american friend!
    Cliff

    Cliff Barnes
    Participant

    Dear sferrin, now I understand that this might come a little bit as a shock to you, but sometimes different teams around the world comes to pretty similar solutions without copying each other. This might be because these models presents solutions to similar problems.

    If you do feel that this theory of mine hurts your big american heart pumping inside of you, then we can just say that those french frog eaters and those hill-billys up north always copies products from the glorious country of US-of-A. And I apologize for speaking about reality.

    As for the comment about Saab and aerodynamics, it was the words of an american professor in aerodynamics from San Fransisco. He’s quite famous all around the world because of his knowledge in CFD. But he’s got to be paid by those communists, right?

    Regards,
    Cliff

Viewing 15 posts - 31 through 45 (of 183 total)