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Tu22m

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Viewing 15 posts - 721 through 735 (of 1,142 total)
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  • in reply to: Your favorite Super Hornet Block III Upgrade. #2277947
    Tu22m
    Participant

    I thought also it was also for rcs reduction? May be confused with something else here however :confused:

    For the intakes yes, for the outward canted pylons no. To solve the problem they went around and made the most stupid fix I have seen in a long time.

    in reply to: Your favorite Super Hornet Block III Upgrade. #2278061
    Tu22m
    Participant

    O I see, look at the fuel tanks why did they disigned the fuel tanks to be pionted outward.

    Ingestion problems. And because the inner stations where tilted they had to tilt the others as well. And this sort of messes up the drag. A more modest solution would have been to tilt the inner pylons slightly downwards (like on the F35… or maybe it is the jet that is pointed upwards in that example).

    I think they may have over estmated the riscs but that’s how they solved it.

    in reply to: Your favorite Super Hornet Block III Upgrade. #2278175
    Tu22m
    Participant

    Great, here we go yet again… those operating cost numbers have been debunked over and over again at this point. You can’t simply plug in numbers across different forces with different assumptions and expect to get a useful result.

    As for the sensors, networking, etc… just do a little reading, please. I don’t have time for yet another Super Hornet versus the world debate. Do your homework and come back with an intelligent question.

    I think the ball is in your court. The ony thing you are capable of doing is to be rude, and wrong.

    You are the one claiming it to have datalinks on par with MADL, you are the one claiming superior sensors, you are the one claiming it is cheap, you are the one claiming it has better weapons.

    It turned out that it didnt have the best weapons, nor most stores/pylons, that it just almost covers the UHF-Ka bands with its sensor suite (when others go for VHF-Ka), that it is more expensive than many others and so on. Basically you managed to come up with nothing, being wrong about everything and at the same time be rude.

    Have fun with chinabot.
    [ATTACH=CONFIG]216081[/ATTACH]

    in reply to: Your favorite Super Hornet Block III Upgrade. #2278318
    Tu22m
    Participant

    You could hardly be more wrong. The Super Hornet is very inexpensive compared to other Western 4.5 generation fighters and matches or exceeds their performance in almost all areas. (Sensors, networking, weapons, carrying capacity, operating costs, etc)

    The only real area where the Super Hornet is a relatively poor performer is in pure speed and acceleration.

    http://www.stratpost.com/wp-content/uploads/2012/06/janes-600-x-331.jpg
    It has 11 pylons/stations, same as Gripen E, which is less than both Rafale and Su35.

    Price in purchase is slightly lower than Rafale, but it has higher TCO.

    And it is interesting that you have information, that is classified, about how good sensors are. What radarbands are the anennas listening to? What is the angular accuracy of the emission detection? Does it have real time sensor fusion between all aircraft in the formation? Does it have beamed datalinks? Does it have “guidance handoff”, meaning one jet can take over the guidance of any missile or precision bomb released by another jet in the formation? Does it have the best missiles (Meteor and Iris-T)?

    Unless your answers are “VHF-Ka”, “<1%”, “yes” (with link 16 it is a definitive no), “yes” (but it hasnt), “yes” (but it hasn’t), “yes” (which it hasnt), then the Super Hornet in fact is not ahead of the competition in networking, or weapons. When it comes to the actual sensors the performance is classified so I wont bother going there.

    in reply to: Your favorite Super Hornet Block III Upgrade. #2278538
    Tu22m
    Participant

    What do you mean a higher price it performs worse? A Super Hornet cost 60,000,000 dollars and how can it perform worse?

    The Hornet already has that great thrust 0.96 of thrust but an armed Legacy Hornet ain’t that maneuverable. Only a clean Hornet is maneuverable with those high AOA? But anyway But of course a CFT might be nice on a legacy hornet for any of the Costumers who own a hornet or the Navy. It would put a same range like the Super Hornet which the Rhino has 2,346 miles of range and the hornet would receive about 2,089 range right?

    I will NOT reaspond complaints or argues.

    The more thrust you have the faster can you get airborne with more payload. The Super Hornet is very close to the FA18C when it comes to agility.

    I am really interested in how you got the unrefueled range to 2’346 miles (3’900 km) on internal fuel + CFT!

    These are my numbers on ferry range:
    Super Hornet: 1,660 nautical miles (3,054 kilometers), two AIM-9s, three 480 gallon tanks retained.
    Old Hornet: 1,546 nautical miles (1777.9 miles/2,844 km), two AIM-9s plus three 330 gallon tanks.

    This is my source: http://www.navy.mil/navydata/fact_display.asp?cid=1100&tid=1200&ct=1
    http://www.f-16.net/attachments/f18_turn_rate1_576.png
    As you can see a Super Hornet with 1 drop tank is just marginally better at turning than the FA18C with 3 drop tanks. With the same load I think the margin is pretty negligible.

    Not that it is very related to topic. But that said I think more thrust in the engines would be good (to improve sustained turn performance).

    All upgrades however are good. So its hard to pick a favourite without determining who it is for.

    in reply to: Your favorite Super Hornet Block III Upgrade. #2278696
    Tu22m
    Participant

    If I had to pick between the given choices I would go with the engines. The Shornet is a carrier aircraft, therefore more available thrust increases flight safety.

    And it increases MTOW from carriers.

    I would like to see some small changes to the standard FA18 but with CFT and F414 EPE added.

    in reply to: Your favorite Super Hornet Block III Upgrade. #2278703
    Tu22m
    Participant

    Jesus people, stop critizing the Super Hornet guys. I don’t care what people say but please it’s a diffrent aircraft. But it’s weight has increased to 23,000 pounds to 32,081 because due to the carrier operations. But please this is NOT a F-35 vs Super Hornet thread you people are going off topic here. Anyways,

    Sincerely,

    F-18Growler

    If something is good or not depends on the situation it is being used.

    The stealthy weapon pod is a very good upgrade because it can be used by other jets, ie you get synergy.

    Unfortunately there are very few things that the Super Hornet does equally good as the competition, and in most areas it performs worse at a higher price. The only good thing about the Super Hornet is the commonality with the old FA18 meaning you can use basically the same infrastructure.

    in reply to: Your favorite Super Hornet Block III Upgrade. #2279036
    Tu22m
    Participant

    Very good post.
    But we should notice a few things:
    1.According to RAF:

    http://www.google.pl/url?sa=t&rct=j&q=air%20international%20typhoon%20a%20year%20on%20the%20road%20-%20bae%20systems&source=web&cd=1&cad=rja&sqi=2&ved=0CC4QFjAA&url=http%3A%2F%2Fwww.baesystems.com%2Fdownload%2FBAES_063239%2Fair-international&ei=EJt_UaOkG4TGPa7NgHA&usg=AFQjCNETrnD1f39pZIr_vjxVBRr7UtgkBw&bvm=bv.45645796,d.ZWU

    and according to Raytheon:
    balistic range of AIM-120B – max 75km
    balistic range of AIM-120C – max 105km
    sources: Lotnictwo 1/2007
    http://www.magnum-x.pl/menuarchiwalia/lotnictwo?mid[0]=69
    That means ~40% more range according to manufacturer, which translates to 10% better range in real life. I think the same will applies to AIM-120D compared to C model

    In order to test my assumptions etc I usually put in variables that are as strong as possible in favour of the opposite point of view.

    2.In real exercises between Ef-2000 and F-22 engagement zone was around 20miles (~32km) with AIM-120C according german pilots (exercises Distant Frontier and Red Flag Alaska 2012). Both fighter are on tops in terms of kinematics.

    Well, here we are going into an interesting zone. First of all, at what altitude are the engagements taking place? The missile (Aim120A/B) doubles its effective (subsonic) tail chase range by 100% by simply changing altitude from 30 kft to 45 kft. Assuming the same is true for the Aim120C we are suddenly talking about kill ranges of 32-44km.

    The EF2000 and F22 happen to have exceptional kinematic performance. That increases the NEZ of the missiles as well. (Add 300m/s to the V0 compared to the subsonic examples in the chart) If we just for the heck of it dont mind the increased drag we get around 25% longer effective range for the missiles (tops at mach 5 instead of mach 4 and retains higher speed longer).

    So changing altitude by 15kft gives us +100% range, increasing speed (from mach 0,8 (F35) to mach 1,8 (F22)) we get 25% more range (or ~20% depending on drag).

    So just putting it all together we might say that 10% incease i range for the Aim120C (in this profile) together with engagements at 45kft along with missile release at mach 1,8 (+20% range) gives us a kill range of 37km, in the scenario I made before it would be an effective engagement range of 30-32km.

    3.Fighter with lower RCS will have still advantageous against ARH seeker BVR weapons (AIM-120, R-77, MICA EM), but not against IR homing BVR missiles (MICA IR, R-27T/ET).

    Couldnt agree more.

    The big question now is; how do we fit larger missiles in the tiny bays?

    in reply to: Your favorite Super Hornet Block III Upgrade. #2279082
    Tu22m
    Participant

    I think we are still missing the crucial parts of the argumentation here. Missile performance.

    Hitting a target further out than 30km @ 30k ft is borderline impossible if they have semi decent IRST systems in a head on engagement.

    And this is because at 40-60km they will track you and they will see the missile release indicated on the HUD. Pulling a 9G turn in m1,2 takes 10 seconds (the missile has now travelled 12km) and it will now be a tail chase against a super sonic and accelerating target with an average closing speed of mach 2,2. The missile has only got fuel to chase the target for ~20km, meaning it will need to chase the target for 33 seconds, about 2x what it has fuel for.

    This is from another post I made (check scale on left vs right)
    http://img188.imageshack.us/img188/1328/aim120ranges.gif
    At 10km/30 kft the Aim120A/B can get a tail chase kill on a subsonic (m0,8-0,9) target as far out as 16km if it isnt maneuvering.

    To get a kill, in a head on engagement against a turning target, you would need to engage them at 14 km because of their turn (8 seconds in 9G speed < mach 1) + their displacement in range in the tail chase.

    But thats the old Aim120A/B. The Aim120C (that at best has 15% more fuel, but it hasnt) may because of flight profile extent range by 50% (in the advertising). This makes the maximum engagement range, on a target with decent situational awereness that makes one counter move, a staggering 21km with a likely hit distance of 24km.

    The Aim120D is supposedly able to extend this by another 50% so if the advertisement is true we get a maximum engagement range of 31,5km against a subsonic, but situationaly aware, target that makes one turn. And again the range where the kill occurs will be further out, in this case 36km.

    The problem is that flight profile changes really only work at very high altitude, like 50k ft if the target is at 40k ft. So in reality the 50% range increases are way lower at lower altitudes.

    And now we get to the supersonic targets. The missile needs 30 seconds of flight to reach 36km, the jet will fly for 10 sec (turn @9G in mach 1,2) and then 20sec while accelerating away with average speed of mach 1,65 or 500m/s. This moves the jet 10km away. So the maximum engagement range (according to marketing claims of the missile manufacturer) against modern 4,5th gen fighters will be 36-10 = 26km with the Aim120D.

    At this range the F35 has no advantage over a legacy jets. For instance the OLS 35M is stated to have a target acquisition range of 50 km head on against non afterburning targets, Pirate and the ball on Rafale even more.

    The only way to extend the reach is new missiles, missiles that dont fit in the bays of the F35 (at the moment).

    So claiming that one or the other definitely will win is just stupid. The ranges are short enough to make it an open playing field as long as both have decent situational awareness. The next argument will likely be that MAWs have short range, but they are supposed to give a 360 degree awareness while IRST search and tacks in +/-120 degree horizontal and +90/-40 degree azimuth. It is likely that any threat will be within that search area. After all is “only” 240 degrees to the front, and to sneak past this with a slower jet is physically very close to impossible.

    Oh, and pay attention to the assumption that the jets can perform a 9G turn… the F35A is limited to 4,6G so the turning would take longer and the escape speed would be lower (it takes the F35 ~60 seconds to reach mach 1,2 from mach 0,8).

    So from a purely kinematic perspective it looks as if the F35 will struggle to escape. For instance the turn will take 20-22 seconds in 4,6G and speed around 300m/s, and average escape speed will also be around 300m/s which moes the F35 around 2,7-3km.

    This makes maximum engagement range against EF2000, Gripen, F16 etc ~26km (when using Aim120D) while the maximum engagement range against the F35 is 33km using the same missiles. Assumption 2 is that the missiles are fired at subsonic speeds… If you use afterburner it sort of gives away your position a liiiiiittle bit further than the gain from it. The 3rd assumption is altitude ~30kft.

    And thats all. The winner of a fight is determined by more than the gadgets brought to it. A future FA18E/F with excellent IRST may very well prove to be superior to the F35 in dogfights, but more likely the Eurocanards will. At least untill the F35 can carry Meteor internally, at that time the engagement ranges may very likely increase to somewhere close to 50km.

    in reply to: Saab Gripen & Gripen NG thread #3 #2279687
    Tu22m
    Participant

    I think anyone can spot that it is photoshoped. And the biggest giveaway that it isnt the real concept (apart from the brush strokes) is that showes a potential Gripen F model that isnt even in development.

    There has been a lot of Gripen photoshops out there showing DSI.

    Here is the original (without nametag)
    http://img.photobucket.com/albums/v486/robban75/Gripen_NG_Demonstrator1-1.jpg

    Here is another with dsi…
    http://xplane.se/slask/grippen_engee2.png

    And here is tha model they (SAAB) actually show.
    [ATTACH=CONFIG]215903[/ATTACH]

    in reply to: F-35 Debate thread (2) #2279887
    Tu22m
    Participant

    Found a picture that was so pretty I couldnt make it better myself…
    Amraamski performance
    http://img98.imageshack.us/img98/9017/r772.jpg
    http://img188.imageshack.us/img188/1328/aim120ranges.gif

    Note that they changed the scale for the Amraam on left side. From http://www.f-16.net/f-16_forum_viewtopic-t-13506-start-120.html

    Basically, if you want to kill someone in a tail chase (subsonic non maneuvering target) the Amraam A/B (stated ~60km “effective” range) will officially help you out up to ~15km…

    From X-plane http://www.x-plane.org/home/urf/aviation/text/missiles/aam.html :

    To take one example, the Vympel R-77 has a stated range of 100 km against a head-on target at high altitude, but only 25 km in a stern chase. At low altitude it can fire at head-on targets at 20 km, from which we can guess range in a stern chase is 5 km. (See the above diagram.)
    And this is presumably against targets that don’t try to evade.

    Range varies similarily for AIM-7C.
    http://www.x-plane.org/home/urf/aviation/text/missiles/aim-7c_range.png
    Target and shooter both at M 0.9
    altitude head on tail chase
    50.000’/16km 14.000-37.000 feet/4.5-12km 8.200-25.000 feet/3-8km
    30.000’/10km 9.500-34.000 feet/3-11km 4.200-20.000 feet/1.6-6km
    sea level 9.500-19.000 feet/3-6.5km 2.000- 5.700 feet/0.6-1.9km
    The improvements planned for, but at the time of writing (2000) cancelled, future versions of AMRAAM include the ability to engage 9G manouevring targets at 30 km, which will let it engage non-agile targets at more than 60 km, which gives a good idea of the range difference depending on type of target.

    This is what the Swedish air force says are typical ranges for some missiles

    Low altitude High altitude
    Rb 24J Sidewinder about 1000 m slightly more than 3000 m (AIM-9P)
    Rb 71 SkyFlash a couple of km well over 10 km
    Rb 74 Sidewinder, AIM-9L

    I think this makes a strong argument that BVR likely is the future but that it will take some time and that the 100km 1 shot 1 kill is still a dream.

    Now consider the range for a target that makes a 180 turn, goes for full ab and accelerates to m1,6 at 20’000 ft.

    Lots of love etc :love-struck:

    Tu22m
    Participant

    Do you really need 70 per shift? Also, do you really need 4 planes on QRA, I think Norway got only 2.

    I think in Norway people working at hospitals have some exemptions from the regular working regulations, this allows them to work longer hours etc.; I would not be surprised if the Norwegian Air Force has something similar for the QRA.

    Edit: Perhaps Sweden should hire Czech personell to do QRA: 🙂
    http://www.flightglobal.com/news/articles/baltic-exchange-327070/

    Or they could use the expeditionary Gripen force that was in Libya?

    They used 120 + 10 ppl working 12 hr shifts for that.

    120 + 10 ppl: http://www.nyteknik.se/nyheter/fordon_motor/flygplan/article3147413.ece
    12 hr shifts: http://blogg.forsvarsmakten.se/flygvapenbloggen/2011/07/16/fl-02-fortsatter-att-leverera/ (and the pilots + contingent commander where all working with maintenance fo 5 jets, so they worked overtime AND helped out afterwards anyway)

    The maintenance for the jets is one part of it, then you have C&C, logistics element etc. In peace time this would be pretty undoable because of work regulations and you need to double the force (because ppls have families etc and don’t want to work night shifts).

    Basically Gripen would need 120*2 (240) just to keep the jets operational back home in peace time + ppl running the airfield. A little less ppl for the jets and a few more for the rest compared to Libya. At a minimum it is 120*1,5 = 180 persons per location.

    Much of the logistics etc have a constant need for people that isnt directly depending on the amount of jets (up to a certain level).

    If you send fewer techs, fly fewer sorties, have ppl working overtime and simply “assume” readyness (as in the good old days) you can slim the organisation. But getting airborne is about more than just taking the bike to the aircraft, take off and leave it to maintenance afterwards. It could work but it’s bad practice. In theory though you could have 8 techs + 2 logistics + 2 in C&C * 3 shifts (36 ppl) for a very short mission assuming airfield etc takes care of itself. That is likely the Checz organisation today (old Swedish war organisation).

    But with Swedish peace time work and safety regulations it is a no go unless for very short periods of time.

    Tu22m
    Participant

    If the A-50 used its jammer in International Airspace..?
    Comon, whats so serious about that??

    The seriousness in that is that it was targeting Swedish ground based radar installations on Gotland, and apparantly in a succesful way. This means that the SwAF where completely blind in that area and at the same time didnt bother to show up to at least display presence or get eyes on the unidentified and unanounced aircrafts. It’s like saying “what’s so serious about someone blinding your survaliance cameras on your property? They didn’t trespass..

    Edit: btw, what kind of jamming capability does the A-50 have, afaik it has none. The A-50 an AWACS not ELINT platform..? And besides, its not like it could interfere or Jamm the whole baltic sea Airspace.. the range of such equipment is not that powerfull.

    Thats a question I have as well. AFAIK it was present with escort, what ac that performed the jamming is unknown. And it will remain unknown because SwAF didnt send anything out there to find out so unless the russians will tell we won’t know.

    In the Norwegian incident the Norwegian AF did show up, and they didnt just observe. They sent a message. SwAF did nothing.

    The main issue was that Sweden does not have 24-hour QRA, like we do in NATO.

    Your example shows — I don’t know what? That Russia is a friendly and non-aggressive neighbour? Since we need to jam their communications to get them away from our oil rigs?

    To maintain a 24/7 hr QRA of around 4 jets you need about 280 tech/maintenance employed. (and 16 pilots) because of work regulations. (70 ppl per shift).

    And that is per QRA-unit in “high alert/readyness” as is expected if you have to be able to take of within 30 min or less.

    SwAF has 280 ppl in the staff (technicians etc) + 80 pilots (can be wrong). This means we only have jets ready <8,6 hrs per day, in total. And this is according to state media/public service (SVT) http://www.svt.se/nyheter/sverige/gripenplanen-bara-startklara-dagtid

    The big problem here is that Sweden loses all credibility in its capacity to uphold it’s borders while Russia have done nothing wrong.

    And yes, it is just a part of a bigger problem.

    Tu22m
    Participant

    I’m sorry, but that map with the Russian claimed flight path smell BS all over..
    If that was the case, then the Russkies would be flying far into the Sweedish Airspace, which of course the Russian did not.. Why do i get the feeling someone here, goes at lenght to make noise over nothing..?

    It has allready been established that the Russian jets only flew in international Airspace.

    Initial claims seem to have been exaggerated.

    It looks as though this is a political game where the highest command want to spark the debate.

    Anyway, no argument is better than the sources used. In this case an ex officer and politician + the most respected newspaper in Sweden.

    I’m sorry for jumping on the bandwagon so early. If the statements would have been true about the russian jamming it would have been very serious, not that Ivan is testing SwAF but that SwAF won’t show up to display presence.

    in reply to: Trouble with the New forum layout ? #2280598
    Tu22m
    Participant

    Some characters arent displayed properly (seems to be the text encoding).

    testing å ä ö é (those didnt work in previous post)

    Here you see what i mean: http://forum.keypublishing.com/showthread.php?123845-Sweden-saved-by-Danish-F-16-because-no-Gripen-was-able-to-take-off&p=2017664#post2017664

Viewing 15 posts - 721 through 735 (of 1,142 total)