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Dare2

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  • in reply to: Hot Dog Typhoon thread III #2443092
    Dare2
    Participant

    Well actually not to surprising when I think twice about it, the actual roll rate in such conditions would interest me. I read something like 200°/sec at ~200 kts in a heavy loadout.

    No it is way lower than that, 5.5G max and 160°/s roll for this sort of load.

    in reply to: Hot Dog Typhoon thread III #2443099
    Dare2
    Participant

    360° rolls at MTOW (24.5t) at just 100 kts?

    How is it surprising? Thrust plus lift are there…

    The 100 kt limit is there for all TOW and with a margin for maneuvers, with relaxed control laws it would fly as low (in control flight) as 15 kt in simulated Air combat, and don’t forget Typhoon ultimate minimum of 50 kt before garanty of non-departure is no longer given.

    in reply to: Hot Dog Typhoon thread III #2443106
    Dare2
    Participant

    On LeBourget this year, EF demonstrated Vmin of ~100kts,

    Good but not exeptional (a Rafale does it at Max TOW and passes 360* rolls in the same configuration at 100 kt).

    The problem of Typhoon is not so much the minimum speed (still lover than many concurent aircrafts) it is the landing speed; read at the proper AoA and vertical speed.

    The aircraft is not navalizable to my eyes (even with TVC), the lift and low-speed/AoA characteristics aren’t there to allow for that, there is no safety margin in case of failure of one engine or TVC system and simply not enough lift to fly slower at more moderate AoA.

    in reply to: Rafale News VII #2443109
    Dare2
    Participant

    I’d say M2.8+ (assuming it doesn’t melt down first) and I’d say just one F119 would suffice. 😀

    Well no. I Want two. 😀

    But with no After-burner and downrated to increase service life.

    The aircraft is limited to M 2.0 anyway but it is designed to sustain this Mach, hence the interest of the exercise.

    in reply to: USAF OA-X Program #2443115
    Dare2
    Participant

    Arthur
    ça plane pour moi!

    Well this is what i call archival material, good find!

    in reply to: USAF OA-X Program #2443130
    Dare2
    Participant

    slipperysam
    Why again waste millions in a complete redesign of a single engine tail dragger plane when theres already turboprop trainers in service with a nosewheel at the front?

    All that extra training at simple take of and landings for pilots who have probably never ridden in a tail dragger… Im sure they would appreciate that…

    OK. Compare their perfs and specs then, are we talking Close air support or aerobatic scools? (Trainer programes are alreay covered)

    It’s one or the other, trainers doesn’t do better in A2G close support and certainly have a lot less punishment taking capabilities built-in, to do as well as this design they would need a total redesign too and front wheel or not flying it, i wouldn’t mind at all.

    Jets? A-10 is unbeatable.

    Other than that, show us a turbo trainer equaling a Skyraider in the role. Please.

    http://skyraider.org/hook/weapons.html
    http://i588.photobucket.com/albums/ss325/aviadare2/sandylod.jpg
    A rather unconventional view of the standard Sandy load used until April, 1972.

    On a mission like this, we normally would make about a half dozen passes each, which seems like a lot until you consider that we had 12 external stations carrying ordnance plus a minigun and four 20 mm cannons. A typical strike of this nature may have gone like this.

    First pass – LAU-3 HE (high explosive) rockets, ripple fire both pods, total of 38 rockets, from stations 6-7
    Second pass – CBU-25 pairs from stations 1-12
    Third pass – AN-M1A4 frag clusters, pairs from stations 2-11
    Fourth pass – AN-M1A4 frag clusters, pairs from stations 3-10
    Fifth pass – LAU-68 WP (white phosphorus) rockets, ripple fire both pods, total 14 rockets, from stations 5-8
    Sixth pass – M-47A4, white phosphorus bombs, pairs from stations 4-9
    http://forum.keypublishing.co.uk/showthread.php?p=1482940&posted=1#post1482940

    Yes i know the front wheel is old fashioned.

    Well how much weight does a retractable front wheel takes out of a design this size?

    EdLaw
    Another blast from the past, alongside the excellent OV-10: a new build A-4 Skyhawk! It was incredibly tough, due to its very rugged design, and could be updated quite easily.

    +1. Dismissing the old proven values is a little ungrateful, they both proved themself as the best in their roles.

    Of course they had their limitations but they had the right design for the role too, which is not the case for a F-16 or a Super Tucanno, give me an A-10 or a Sandy with a new engine any time for doing CAS.

    Merlock
    Then why not reuse the breguet Alizé’s design with a bigger tuboprop ?

    Because the Alize was never designed (nor good at it) for the role the Skyraider was designed to fill.

    As a matter of FACT it has always been the most efficient CAS aircraft in the US inventory when it comes to this mission and was widely used for SAR as well.

    http://skyraider.org/hook/ToC.htm

    SAR
    The Skyraider had all the necessary assets; speed, ordnance carrying capability, communications, and the ability to withstand punishment. Of course when I talk of speed I am talking about the optimum speed to perform the SAR mission. Since the A-1 was frequently operated near its maximum gross weight, its speed capability was not fast. There was a standing joke among Spad drivers. There was only one speed you had to remember- 120 knots. You took off at 120 knots, cruised at 120 knots, and landed at 120 knots. Weapons deliveries were planned at higher airspeeds, maybe as high as 250 knots. (You fast mover guys can quit laughing now.) But working a target area was an energy losing proposition. You could be back up on base at the desired altitude or airspeed, but not both. After your third or fourth pass, 120 knots worked for weapons delivery too! This is precisely why the A-10 is the second best close air support aircraft ever built, it doesn’t go fast.
    http://skyraider.org/hook/seaskymi.html

    http://i588.photobucket.com/albums/ss325/aviadare2/Hooktitle.jpg
    Byron E. Hukee

    This guy looks PROUD (he sould be) and happy…

    Good read. I didn’t pick it by chance, and sorry to the purist i’ll stick to my old fashioned performances vs look on the ground.

    in reply to: What is to believe in Super Hornet propaganda? #2443140
    Dare2
    Participant

    For the benefit of all don’t misuse the name of Paul Metz to cover up your lack of knowledge. 😎

    Yeah we got much of that these days.

    But good, validated information are rare even less qualifed writers who can distinguish between reality and fiction.

    We still are waiting for the famous Paul Metz article instead of having to trust the words of those who’s sole contributions are flame bates and incorrect, substandards pseudo-technical explainations.

    I recon Raptor One knows his theorical but he mixes standards to non-standard measurements and at the end we got whatever is needed for sustaining theories which aren’t even considered as being valid in US Flight-Test centres.

    The other Sci-fi lovers are the same who can’t read official source when they don’t make their points and keep taking people on because they don’t have the bottle to debate properly.

    Now that we’re done with this stupid “KPP tresherhold” legend can we see a link to P-M interview please?

    Sens
    Under the limiting European weather-conditions it is important to have the best practical range here, whatever it will be.

    Main drive for developing long-range/all-weather IR technology has always been the European weather conditions.

    Requierements are much more demanding for operations in Europe than in the Gulf.

    djcross
    It shows the limitations of a non-technically schooled aviation writer. Writing books/articles doesn’t mean you know what you’re talking about. Cyanate ester is more of a limitation than BMI.

    Some of us can actually guess the Combat ceilling properly by starting with Politico-Industrial history, aerodynamics, requierements, predicted roles, Maximum Designed Mach, Equivalent Airspeed… Long before Lockheed Martin publishes the predicted mission profiles for the benefit of the foreign Ministers to which they are trying to sell the aircraft.

    Other still believe that ~ 1200 mp/h is M 1.8 at the tropopause vs a Maximum Mach of 1.6, don’t comprehend the meaning of ~ even less the reason why a Resulting Airspeed wouldn’t possibly be given as a Maximum but an approximated before flight-test and validation of the Equivalent Airspeed at Maximum Mach at Combat celling (BEST performances).

    It’s a good idea to stick to procedural measurement and standard at least one comprehend a lot of things other posters are just completly missing (and some other inventing).
    http://i588.photobucket.com/albums/ss325/aviadare2/Ve.jpg
    Oh yeah i forgot, we also know configuration clearence limits, with external loads, A2A and A2G as Machs and g Max, and as Scorpion puts it, Operational and DASH; we also undestand that Maximum Mach means DASH in standard measurements.
    http://i588.photobucket.com/albums/ss325/aviadare2/Ve3.jpg

    in reply to: 36 Dassault Rafale for Brasil – Official #2443261
    Dare2
    Participant

    Why wasting time with gripen Ng?

    Brazil already choose the french bird!

    :p

    It’s not over ’till the fat lady sings they say…

    in reply to: Bad news for the F-35 #2443267
    Dare2
    Participant

    :rolleyes:

    I’d like to see the JAS-39 specs too, i guess we would be surprised, i have seen somewhere that it was supersonic in all configurations, it seems that SAAB got their pylons design rather good.

    in reply to: USAF OA-X Program #2443269
    Dare2
    Participant

    Just wondering what opinions are of the various competitors for this particular program. I’m not asking if you agree with the need for the program or not so please keep that discussion elsewhere. I just want to know which aircraft you all think would be the best solution for the competition.

    My opinion is that the old “Sandy” should be redesigned, re-engined with a good turboprop and equiped with modern avionics, there havent been better design since Vietnam bar the A-10.
    http://i588.photobucket.com/albums/ss325/aviadare2/800px-A-1H_VA-152_USS_Oriskany_1966.jpg
    It could be used with two crew members for FAC, and since it is a carrier-borne aircraft there would be no problem for use by all services.

    Another thaught, if i was the French Defense Minister (LOL) i would propose a collaborative programe involving Dassault-Aviation and to cut the developement cost, use an existing US engine.

    Then plan for procuring 120 of them for both AdA and Marine Nationale, i truely think it would be THAT good.

    in reply to: Bad news for the F-35 #2443282
    Dare2
    Participant

    Are you brain damaged? Or are you seriously THAT disengenous?
    We are talking about PROCUREMENT, not R & D.

    Precisely it is very unlikely any foreign nation will replace their F-16 on a 1-to-1 basis for a start, then they also are facing budget issues today and the 3000 figure is looking increasingly unlikely to be reached in the foreseeable future.

    What performance deficit? Don’t give me the BS about top speed. In combat configiration it is as fast OR FASTER (BOTH top speed AND subsonic thru transonic acceleration) than the aircraft it is replacing.

    Yeah sure!

    Appart for the FACT that you keep comparing the legacy fighters in combat configuration they never were designed to be in, a F-35 will never out-perform a F-16 with 50% internal fuel and 2 X AIM-9s which is what the LWF requierements were for maximum Combat performance and lift for best turn rates at 40.000 ft which happens to be 20.000 ft higher than L-M disclosed combat ceiling for F-35.

    What you are refering to is the A2G configuration which isn’t that superior in F-35 stealth configuration since its cruise speed is barely 0.08 Mach superior to ours with a Combat radius about 360 nm (best case) shorter and a much lower plalyoad…

    At the same cruising speed, with the possibility of a much higher combat ceilings and performances a Rafale will carry 2 X 1.300 kg SCALP-EGs and 4 X MICAS at 1.000 nm at a typical cruising speed of M 0.82 (Mach 0.9 limit), and still be able to pull 5.5 g.

    Once the weapons droped it will do M 1.6 and 9 g with the tanks (Empty), anything from M 1.8 to M 2.0 DASH without tanks but with AAMs (depending on their number since two plylons are rated differently), as it was designed/stressed for these playloads and Machs, maximum demonstrated g load with 2 X MICAs is a good 11.0 g, so what do you dare calling performances deficit if not this?

    I still have to SEE a maximum g load for F-35 in A2G configuration as well because if the internal ejectors for any A2G weapons have to be stressed above those of the 4.5 gen fighters then you’re talking making them in plain heavy steel.

    The limits you are mentioning reffers to known external weapon store and weapons dynamic and aerodynamic limits, typicaly M 0,82/0.9 and 5,5 g in the A2G configuration, some heavy configurations are even stressed and qualified for higher limits, depending on their aerodynamic characteristics (Pods etc).

    This is reality, F-35 was never designed as an LWF and performances are resulting from requiered specs, not your interpretation on them, the only superior specs is F-35 Maximum Mach with all type of internal loads and it is still 0.4 Mach lower as a DASH value.

    ANY “4.5 gen” fighter enjoy the SAME kinetic advantage with their full load of AAMs over F-35 than F-22 over US legacy fighters bar the top speed and THIS is also reality, they are stressed for maximum turn rates and Machs WITH their A2A loads.

    So before coming up with figure you do not understand and call other pple comments BS, the least you could do is to inform yourself.

    in reply to: 36 Dassault Rafale for Brasil – Official #2443299
    Dare2
    Participant

    http://www.aereo.jor.br/wp-content/uploads/2009/09/gripen_ng_br.jpg
    This image suggests that the Brazilians would be involved in other areas than milling metal and putting parts together. Co-op regarding IRST, EW, IFF, Radar etc sound pretty high-tech to me.

    As you said Embraer don’t focus on the above mentioned but I think the Saab proposal is focused on Brazilian industry rather than only Embraer. Embraer would of course get their fair share of ToT. Either they’re interested in getting know how in the above mentioned areas or they’re happy continuing doing airframe parts and systems integration.

    Thanks for posting this, although it is not news it gives a better insight of SAAB proposal.

    The point i was making conserns design points:

    Conceptual, Aerodynamic, Structural, etc.

    These are already done in the case of all concurents and are not likely to change in the future.

    Brazil needs to start with less performant aircrafts design to expect a real independence of capabilties at this level, and this is where that of SAAB and Dassault canot be thaught over even ten years of trying.

    in reply to: What is to believe in Super Hornet propaganda? #2443305
    Dare2
    Participant

    Defence
    SubscribeYou are in: Home › Defence › News Article
    DATE:11/08/09
    SOURCE:Flight Daily News
    AUVSI: F/A-18 may perform ‘hands-off’ carrier landings by 2011
    By Stephen Trimble

    A Boeing F/A-18D Hornet may perform the first “hands-off” approaches and landings to an aircraft carrier within two years, the US Navy says.

    The F/A-18D autopilot will be modified with the avionics and software of the Northrop Grumman X-47B unmanned demonstrator. The manned Hornet will thus act as a surrogate testbed to “wring out” the interfaces between the aircraft and the ship, says Capt Martin Deppe.

    Whether the surrogate F/A-18D actually performs a “hands-off landing” on the carrier with two pilots aboard has not been decided, but the USN clearly hopes to make that work.

    “We’d like to build our way up to the point where [the pilot] couples up with the X-47 commands and is able to go hands off to the ship,” Deppe says.

    Northrop is building two X-47Bs to prove whether an unmanned aircraft with a tailless planform can land and operate aboard carriers. A follow-on demonstration will also investigate autonomous aerial refuelling.

    In a related development, the US Air Force and the USN are in discussions “on getting some air force presence in the navy program offices so they can better understand what we’re doing”, Deppe says. “In return, we can understand what the air force is doing. I think that’s going to be the beginning of a nice partnering relationship because we both have similar requirements in some regards for systems like these.”

    The partnership does not include funding at this point, Deppe says, but “it all begins with getting together and starting to talk and find out what the synergies are. Who knows where it goes from there.”

    The USAF and USN had previously partnered on the joint unmanned combat air systems (J-UCAS) program, which was canceled in 2005.
    http://www.flightglobal.com/articles/2009/08/11/330851/auvsi-fa-18-may-perform-hands-off-carrier-landings-by.html

    Not the fresh news we could hope for but one good information, though…

    DATE:09/07/09
    SOURCE:Flight International
    RAAF chief welcomes 1st F/A-18F, but says ‘no more’
    By Stephen Trimble

    But the RAAF is keen to expand the capability of the F/A-18Fs currently under order. The last 12 of its 24 aircraft will be pre-wired for conversion to the US Navy’s EA-18G Growler jammer mission, although a decision on whether to order the electronic warfare equipment is years away.

    Binskin supports the idea of converting the aircraft, noting: “It’s the final part of the air combat capability that we [currently] rely on our coalition partners.”

    He says the RAAF has no interest in an improved version of the General Electric F414 engine. In May, Boeing disclosed plans to launch an engine performance enhancement upgrade that could improve thrust by 20%, or extend lifecycle maintenance costs.

    Binksin, meanwhile, says he is “confident” in Lockheed’s ability to overcome development problems with the AGM-158 Joint Air-to-Surface Standoff Missile, which the RAAF has ordered for integration with its Super Hornets and legacy F/A-18A/Bs.
    http://www.flightglobal.com/articles/2009/07/09/329411/raaf-chief-welcomes-1st-fa-18f-but-says-no-more.html

    in reply to: Bad news for the F-35 #2443307
    Dare2
    Participant

    Countries will buy the F-35 after the US wastes all of its money “reducing the price” through economies of scale. Not that it will get too far. I predict not more than 800 F-35s will ever get into US service. TOTAL. By 2040.

    It’s my guess too, although i won’t give figures i canot see this programe being as succesful as F-16 was.

    in reply to: Bad news for the F-35 #2443311
    Dare2
    Participant

    http://www.jpost.com/servlet/Satellite?cid=1256799085242&pagename=JPost%2FJPArticle%2FShowFull

    Also known as the Joint Strike Fighter (JSF), the F-35 will be one of the most advanced fighter jets in the world and will enable Israel to phase out some of its older F-15 and F-16 models.

    If it isn’t THE most advanced, considering the performance deficit, i can understand why procurement agencies around the world are reconsidering their options today.

    SpudmanWP
    3. LM does not “guess” at what the future jets will cost. They, and other builders, have a long history of producing fighter aircraft. That, combined with the DoD’s experience lets them evaluate what the future price will be. Btw,the last two LRIP cycles were 3% and 5% UNDER budget.

    That’s assuming Lockheed Martin doesn’t have to face a design capabilties issue and retained the same design team than that which worked on ATF which is, to say the least assuming a lot in view of the results; F-35 is WAY simpler than F-22 was at the time.

Viewing 15 posts - 511 through 525 (of 661 total)