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Poslao: 08 Nov 2017 23:01
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- ltcolonel
- Stručni saradnik foruma
- Nebojša Đokić
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Napisano: 08 Nov 2017 22:59
F-35 ni u Italiji ni Velikoj Britaniji ne menja Tajfuna nego Tornada. I u Britaniji i u Italiji je namenjen za dejstvo po ciljevima na zemlji a samo u samoodbarni protiv ciljeva u vazduhu. Uopšte nije predviđeno njegova upotreba u sistemu PVO. Pri izvršenju zadataka sa F-35 predviđena je obavezna zaštita sa Tajfunom.
F-35 je u stvari upravo to - naslednik Tornada tj avion za izolaciju vojišta.
Što se tiče Nemaca bumo videli ali tvrdim da F-35 nema nikakve šanse da nasledi Tornada. Stojim iza toga.
Dopuna: 08 Nov 2017 23:01
Ni Britanci ni Italijani ni u daljoj perspektivi ne predviđaju zamenu Tajfuna sa F-35.
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Registruj se da bi učestvovao u diskusiji. Registrovanim korisnicima se NE prikazuju reklame unutar poruka.
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Poslao: 09 Nov 2017 23:11
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- Futurama
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Concurrency horor se nastavlja...
http://warisboring.com/108-u-s-f-35s-wont-be-combat-capable/
Siročići...
Citat:
The new F-35 program executive officer, U.S. Navy vice admiral Mat Winter, said his office is exploring the option of leaving 108 aircraft in their current state because the funds to upgrade them to the fully combat-capable configuration would threaten the Air Force’s plans to ramp up production in the coming years.
These are most likely the same 108 aircraft the Air Force reportedly needed to upgrade earlier in 2017. Without being retrofitted, these aircraft would become “concurrency orphans” — airplanes left behind in the acquisition cycle after the services purchased them in haste before finishing the development process.
Left unsaid so far is what will become of the 81 F-35s purchased by the Marine Corps and Navy during that same period. If they are left in their current state, nearly 200 F-35s might permanently remain unready for combat because the Pentagon would rather buy new aircraft than upgrade the ones the American people have already paid for.
Krajnje je nejasno zašto bi troškovi modifikacije bili toliko visoki ako je samo softver u pitanju.
Moguće je da je ipak potrebno promeniti i dosta toga na hardveru.
Ouch!
Nema veze... Biće posla za Lokidove tehničare decenijama unapred 
Citat:The services will have nearly 800 F-35s either on hand or in the manufacturing pipeline before the design is fully proven through testing under the current plans.
Ovde je dosta detaljniji članak sa analizom problema:
http://www.pogo.org/straus/issues/weapons/2017/f35-continues-to-stumble.html
Evo par isečaka
Citat:But the limitations of EOTS, including image degradation with humidity, force pilots to fly in closer to a target than they had to when using earlier systems just to get a clear enough picture to launch a missile or take a shot. The report says the problem is bad enough that F-35 pilots may need to fly in so close to acquire the target that they would have to maneuver away to gain the distance needed for a guided weapon shot. Thus, the system’s limitations can force an attacking F-35 to compromise surprise, allowing the enemy to maneuver to a first-shot opportunity. Surrendering the element of surprise and enabling an opponent to shoot first is what we want to force the enemy to do, not ourselves.
Citat:Test pilots also had difficulty with the helmet during some of the important Weapon Delivery Accuracy tests. Several of the pilots described the displays in the helmet as “operationally unusable and potentially unsafe” because of “symbol clutter” obscuring ground targets. While attempting to test fire short-range AIM-9X air-to-air missiles against targets, pilots reported that their view of the target was blocked by the symbols displayed on their helmet visors. Pilots also reported that the symbols were unstable while they were attempting to track targets..
Ovo je tipično američka brljotina. Sve staro mora da se baci i da se stavi sve novo i ne testirano. Da F-35 ima HUD problem bi bio značajno manji.
Citat:Then there is the matter of pilots actually seeing double due to “false tracks.” There is a problem with taking all of the information generated by the various onboard instruments and merging it into a coherent picture for the pilot, a process called sensor fusion. Pilots are reporting that the different instruments, like the plane’s radar and the EOTS, are detecting the same target but the computer compiling the information is displaying the single target as two. Pilots have tried to work around this problem by shutting off some of the sensors to make the superfluous targets disappear. This, DOT&E says, is “unacceptable for combat and violates the basic principle of fusing contributions from multiple sensors into an accurate track and clear display to gain situational awareness and to identify and engage enemy targets.”
And as bad as the problem is in a single plane, it’s much worse when several planes are attempting to share data across the network. The F-35 has a Multifunction Advanced Data Link (MADL) that is designed to enable the plane to share information with other F-35s in order to give all the pilots a common picture of the battlespace. It does this by taking all of the data generated by each plane and combining it into a single, shared view of the world. But this system, too, is creating erroneous or split images of targets. Compounding the problem, the system is also sometimes dropping images of targets altogether, causing confusion inside the cockpits about what’s there or not there.
Morao sam sve da citiram. Problem fuzije senzora se rešava isključivanjem drugog senzora  . Problem fuzije informacija sa više aviona se rešava isključivanjem drugih aviona 
Saplitanje...
Citat:This latest report confirms the F-35 is not as maneuverable as legacy fighters. All three variants “display objectionable or unacceptable flying qualities at transonic speeds, where aerodynamic forces on the aircraft are rapidly changing.” One such problem is known as wing drop, where the jet’s wingtip suddenly dips during a tight turn, something that can cause the aircraft to spin and potentially crash.
Ne znam koji je retard osmislio informacioni sistem koji zahteva obavezno veliki protok podataka. Ovo nije moguće u mirnodopskim a kamoli u borbenim uslovima.
Citat:During the Washington trials, the crew had to transmit a moderately sized 200 MB ALIS file over the ship’s satellite network. It took two days. Bandwidth limitations and spotty connectivity had drastically impeded the transmission of the data.
Ne bih više da citiram jer sam već preterao. Članak je dosta dugačak ali definivno ga vredi pročitati.
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Poslao: 09 Nov 2017 23:59
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- ltcolonel
- Stručni saradnik foruma
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Ja godinama pričam da ako za F-35 bar malo vrede zakoni aerodinamike to mora da bude leteća cigla ali ne vredi ...
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Poslao: 10 Nov 2017 09:07
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- Apok
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Oво по мени је врх муљања:
Citat:
The F-35’s shortcomings as an air-to-air fighter have already been well documented. It famously lost in mock aerial combat within visual range (WVR), where its radar stealth is of no advantage, to an F-16 in early 2015, one of the planes the F-35 is supposed to replace as an aerial fighter. The F-35 lost repeatedly in air-to-air maneuvering despite the fact that the test was rigged in its favor because the F-16 employed was the heavier two-seater version and was further loaded down with heavy, drag-inducing external fuel tanks to hinder its maneuverability."
Добро је да нису и наковањ ставили.
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Poslao: 10 Nov 2017 09:18
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- sremac983
- Legendarni građanin
- Neimar i savremeni farmer.
- Pridružio: 24 Nov 2010
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Требали су мачора и то А верзију да извуку из нафталина, па би крмак имао колике толике шансе у тој блиској ваздушној борби...
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Poslao: 10 Nov 2017 09:32
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ltcolonel ::Ja godinama pričam da ako za F-35 bar malo vrede zakoni aerodinamike to mora da bude leteća cigla ali ne vredi ...
Avion koji ima dimenzije F-16 a masu F-15A definitivno ne može biti manevrabilan i uopšte imati visoke performanse.
Lokidovi inženjeri nisu madjioničari i suludo je očekivati tako nešto. Po meni ovo je krivica menadžmenta koji je pristao da laki stelt lovac-bombarder pretvori u teški. Sve ostalo je posledica te odluke a odozgo začinjeno problemima sa senzorima, obradom i prikazom podataka. Podrška operativnoj upotrebi je posebna priča.
Kao da nije postojala nikakva povratna sprega od korisnika ka Lokidu u toku razvoja. Što i nije čudo ako se ima u vidu "revolving door" princip za šefove Pentagona.
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