dark light

LmRaptor

Forum Replies Created

Viewing 15 posts - 136 through 150 (of 832 total)
  • Author
    Posts
  • in reply to: F-35 News Thread III #2349599
    LmRaptor
    Participant

    Scooter, all I hear from you is nonsense.

    The F-22 being less survivable than the F-35.

    Your weak grasp of technical concepts.. including wing loading, external stores vs. internal stores.

    The fact that you bandy about words like 5th generation, 4th generation, 4.5 generation; as if they mean anything in this context… The mere fact these marketing terms exist seem to make you think stating them is proof, that the F-35 is superior, in the areas of comparison you’ve made. Its quite naive and embarrassing actually.

    You need to try understand that despite the F-35 being able to carry internal stores; a Eurofighter with 4 semi recessed BVRAAMS and 2 WVRAAMs and a centerline drop tank might well out-maneuver/climb/accelerate, a clean F-16/35. Eurofighter is a step improvement in kinematics over all teen designs – its not an incremental improvement.

    in reply to: F-35 News Thread III #2350715
    LmRaptor
    Participant

    Aereodynamics are tricky things and I certainly don’t understand much of it.

    Sometimes it seems counter-intuitive for instance I have heard that some fighters actually experience less drag when carrying wing-tip missiles, than without.

    I have also been told that the canard config that Gripen (and possibly also Rafale) has can be used to “trim” away some of the drag; my understanding (and please correct me if I am wrong) is that this means that Gripen will experience relatively less drag in some configs than what one would expect.

    Aerodynamics is a fascinating subject and can definitely be counter intuitive. Im doing my masters thesis on the CFD modelling of turbulent/separated flow this year. What a drag… 😉 Wingtip missiles act like winglets on a commercial airliner. They help disrupt the build up of wingtip vortices that are the result of vortex induced drag (drag due to lift). So while they suffer a penalty in form and skin friction drag. The fact that the stifle the major vortex generating at the tip of each wing that is then shed downstream can often reduce overall drag.

    in reply to: Rank the best to worst fighter companies! #2391169
    LmRaptor
    Participant

    The Lightning it replaced in RAF service was more manouverable and had higher performance in all but range and actual weaapons loading.

    Tornado had far greater sensor range which no variant of the lightning could hope to match. Maybe a derivative could but no variant. That was the point of the Tornado – it gave the RAF a credible BVR capability.

    in reply to: Rank the best to worst fighter companies! #2391281
    LmRaptor
    Participant

    Also the ADV is no slouch at all at BVR. It’s held its own against Eagles at Red Flags and similar exercises. As Mig said about the harrier radar/missile combo – the blue vixen radar was considered the best fighter radar in the first gulf war.

    in reply to: Rank the best to worst fighter companies! #2391285
    LmRaptor
    Participant

    I think you can easily rank BAE as a global leader in aerospace and fighter design. In fact I would rank it right up there as one of the most capable companies in the world in this regard. I see it above Dassault, SAAB, EADS, Sukhoi/MIG UAC and right up there with LM/Boeing/NG.

    in reply to: Rank the best to worst fighter companies! #2391327
    LmRaptor
    Participant

    No Harrier II is not MDD designed – it is a derivative of the original Harrier. MDD had a major role in the derivative-part while still retaining all the core BAE design concepts that make the Harrier what it is.

    in reply to: Rank the best to worst fighter companies! #2391338
    LmRaptor
    Participant

    http://en.wikipedia.org/wiki/AV-8_Harrier_II
    http://en.wikipedia.org/wiki/BAE_Harrier_II

    They were joint projects where BAE and MDD upgraded a BAE jet with all of the original innovation behind the VTOL concept coming from the predecessors of BAE. Meaning Harrier II would not exist without BAE and its predecessor.

    The original Harrier proved itself as an effective fighter in the Falklands did it not? Many of the ‘proper fighters’ don’t have a record as successful.

    Also you can claim BAE designed and built those early aircraft as it took on those companies and integrated their design teams and staff into what is now BAE. Also taking their factories and infrastructure.

    in reply to: Rank the best to worst fighter companies! #2391375
    LmRaptor
    Participant

    Firstly it’s not BAe it’s BAE.

    Secondly BAE were the lead or at least the joint lead company on the Typhoon; with BAE’s technology demonstrator EAP demonstrating the programs technological feasibility.

    The Harrier II is a BAE jet – you can’t take away from the fact that they are effectively the lead designers.

    in reply to: Rank the best to worst fighter companies! #2391421
    LmRaptor
    Participant

    Can I just ask, apart from the awful Tornado ADV (and unsure if that was 100% in house), which fighter have BAe designed and produced?

    BAE and its predecessors have fully designed or at least been heavily involved in the design of:

    Eurofighter
    F-35
    Tornado
    Hawk
    Harrier
    Spitfire
    EE Lightning

    and others

    in reply to: whos comming to Riat this year? #2398688
    LmRaptor
    Participant

    Im coming

    in reply to: Canards and stealth. . . #2409364
    LmRaptor
    Participant

    It does (other parameters being the same) and that’s the whole point, of the concept (to mitigate delta’s drawbacks).

    Do you have any data to backup this “knowledge”, on F15?
    USAF, for one, doesn’t concur (as have been presented on this forum several times over) and they operate the model.

    Maybe you should recalculate these figures.
    LM doesn’t concur with 37k engine and neither does the USAF.

    This reminds me of AF-1, which doesn’t weight 29k lbs (2008 figures), but ~24k (pre 2008 figures), although noone actually documented that (and for a good reason).

    Let’s not indulge fanboy’s dreaming, here…

    Hardly, the public released figures in every single form they have ever been released in were talking about the thrust class – there was a requirement for a 35000lb thrust class engine. But numerous reports over the years have indicated the F119 produces more than 35klb. At airshows the F-22 display team announce the F119s produce 37000lb each in peace time, and Bill Sweetman has estimated they generated 39-40klb.

    So I don’t care about official documentation when all it refers to is a general KPP. This one being exceeded according to the said evidence.

    Cheers.

    in reply to: Canards and stealth. . . #2409483
    LmRaptor
    Participant

    I’m fairy skeptical about the public weight figures for the Raptor anyway.

    in reply to: Canards and stealth. . . #2409486
    LmRaptor
    Participant

    Never said it was ;).

    in reply to: Canards and stealth. . . #2409548
    LmRaptor
    Participant

    No – the F-22 pumps out 37klb of thrust in peace time – they announce that at airshow demonstations. There are youtube videos of that. Bill Sweetman estimated the total thrust – presumably in wartime – at 39klb-40klb per engine.

    So in the current peace time setting the F-22s max TWR is 1.70. While it suffers lower thrust drop off at supersonic speeds/high altitudes compared to higher bypass ratio engines found in the other new designs.

    in reply to: Why 3 different F-35 ? #2409875
    LmRaptor
    Participant

    Oh Bluewings – the F-22 does Mach 1.5+ on 80% of Military Thrust – from code one.

Viewing 15 posts - 136 through 150 (of 832 total)