F-35 Joint Strike Fighter

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It Takes 41,500 Hours Of Labor To Build A Single F-35A According To New Report



Citat:The chart below shows exactly how many labor hours are poured into constructing each F-35 variant on average. With the A model unsurprisingly being the lowest at 41,541 hours in 2017, the more complex B model taking 57,152 hours, and the carrier-capable C model coming in at 60,121 hours.

Over a five year period of time, the labor it took to assemble a single F-35A dropped by a whopping 62 percent. This is skewed somewhat due to the number of airframes ordered in 2012 compared to 2017, but the between 2016 and 2017 alone the same metric dropped an impressive 12 percent. This is a considerable change for just one year and tells an important story when it comes to the maturity of the F-35's design compared to 2012.

Citat:As far as the question of how the F-35's labor hours for production compares to other aircraft, we are having a tough time answering it definitively at this time, at least with fresh data. But according to an archived POGO report, an F-16A took 29,000 man hours to produce in 1984, and the more complex and relatively new F-16C took 45,000 man hours to build in 1989. That same source noted that just the F-22's center fuselage section took 60,000 man hours to assemble when the program was in its pre-production state in the late 1990s. This was mainly due to the 60,000 fasteners that were used on the section, each of which was installed by hand taking roughly 30 minutes to an hour.

So with just these metrics in hand, the F-35 program doesn't seem to be gobbling up labor at an astronomical rate, especially considering its low-observable design, which are historically very expensive to produce. The fact of the matter is that all aircraft take a lot of time to build. Even during World War II, when the fate of Britain hung in the balance, it took a whopping 13,000 man hours to build a single Spitfire Mk V. In contrast, it took the Germans 4,000 hours to build a Me109G.

We found the chart below in the forums at WW2Aircraft.net and we can't confirm its accuracy, but it seems to be a good comparative snapshot of the time it took to build other WWII aircraft. You will notice the massive delta in efficiency just over a single war year for all the types stated:



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RAF dobio prva cetiri F-35B
Four RAF F-35 fighter jets land in UK
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Pre dva tri dana objavljen je zvanični izveštaj inspekcije pri komandi USAF o programu F-35A. Kako sada stvari stoje malo je verovatno da će Block 3F postati operativan do oktobra 2019. godine premda je i to već više puta prolongirano. Block 4 se i ne spominje u izveštaju. Ako i dovrše Block 3F do oktobra 2019. godine to znači da prvi novoproizvedeni avioni u tom bloku ulaze u budžet tek 2020/21. godine i ulaze u jedinice krajem 2021. godine. To dalje znači da prvi skvadron ne može da bude operativan pre početka 2023. godine u Americi a 2024. godine u Evropi. A reč je o F-35A Block 3F. A kada će Block 4 e to teško da i sam Bog zna.

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ltcolonel ::Pre dva tri dana objavljen je zvanični izveštaj inspekcije pri komandi USAF o programu F-35A. Kako sada stvari stoje malo je verovatno da će Block 3F postati operativan do oktobra 2019. godine premda je i to već više puta prolongirano. Block 4 se i ne spominje u izveštaju. Ako i dovrše Block 3F do oktobra 2019. godine to znači da prvi novoproizvedeni avioni u tom bloku ulaze u budžet tek 2020/21. godine i ulaze u jedinice krajem 2021. godine. To dalje znači da prvi skvadron ne može da bude operativan pre početka 2023. godine u Americi a 2024. godine u Evropi. A reč je o F-35A Block 3F. A kada će Block 4 e to teško da i sam Bog zna.

Problem je u tome što ne postoji jedna verzija Block 3F nego je to teški work in progress.
U članku se navodi da postoji 30 podverzija 3F.
https://www.theregister.co.uk/2018/01/30/f35_dote_report_software_snafus/

Citat:The software, identified by its Block number, has so far been through tens of iterations, with Block 3F – the latest version – having been through more than 30 versions by autumn last year.

“As of late October 2017, the program was preparing a second version of Block 3FR6.3 (3FR6.32), the 31st version of Block 3F, software as it continues work to resolve key remaining deficiencies,” said DOTE in its annual report, which was published late last week. “The [F-35] program is using test point data from older versions of software to sign off capability specifications and justify baseline test point deletions, even though the old data may no longer be representative of the latest version of Block 3F software.”

The DOTE report continued: "The ‘final’ Block 3FR6.3 software for SDD was released in October 2017, but this planned final version has already been superseded by two additional software updates; more software patches will likely be needed as the program continues to work ongoing problems with weapons and avionics.”

Final -> New Final -> New new Final -> OMG here we go again

Očigledno postoji ogroman pritisak da se borbena verzija softvera izbaci a razvoj i testiranje ni izbliza nije gotovo. Drugo ova česta krpljenja možda ukazuju i na to da arhitektura celog sistema nije dobro osmišljena pa se krpi od slučaja do slučaja.

Citat:Britain’s 14 F-35Bs are all thought to be running Block 3F software of various sub-versions. Yet the all-singing, all-dancing jet still can’t talk to its guided air-to-ground bombs properly, even with the latest patches installed.

“For Block 3F, the pilot is now able to see what coordinates are sent to the bomb, but is still not able to see what coordinates are actually loaded in the bomb,” noted DOTE. “The [US] Services are assessing if this correction meets the requirements directed by the rules of engagement in specific areas of operation.”

Even more worryingly, trials identified that the AIM-120 AMRAAM missile, which the Royal Air Force and Royal Navy intend to use as the F-35B’s main air-to-air weapon, cannot currently be used to its full potential by the supersonic stealth jet. After six test firings in simulated combat scenarios, test pilots identified “key technical deficiencies in the ability of the F-35 to employ the AIM-120 weapons”.

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F-35 u Dolini smrti. HD kvaliteta.

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Futurama ::Očigledno postoji ogroman pritisak da se borbena verzija softvera izbaci a razvoj i testiranje ni izbliza nije gotovo. Drugo ova česta krpljenja možda ukazuju i na to da arhitektura celog sistema nije dobro osmišljena pa se krpi od slučaja do slučaja.

Koliko puta se godišnje, zapravo mesečno unapređuju razne aplikacije koje svakodnevno koristimo. Sasvim normalno gde je softver "krvotok". Nije ovo dokaz ni za šta, sem da su sredili neke probleme, bagove ili otključali nove mogućnosti i tako u krug. Kodiraj, testiraj softver i onda na samim avionima.

Smatram da je jedini problem što su kod pojedinih rešenja jednostavno preambiciozno pristupili. Rusi verovatno imaju knzervativniji pristup, gde je bitno da radi i da se avion može što pre borbeno osposobiti, a onda ćeš imati a, b, v, g ... а, б, в, г, д ... verzije sa sve brojevima

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Problem je ovde o tendenciji u razvoju svega generalno.

Da bi se postigla konkurentnost, krenulo se sa ubrzanim razvojem bez dvoljno promisljanja, a kasnije i testiranja.

Tako se, da bi se suprostavilo konkurenciji, izbacuju poluproizvodi na trziste. Tako je pre neku godinu izasao Visual Studio 2015 Enterprise sa bagom koji je bio vezan za string tip podataka, i koji su resili u prvom "Major" update-u. Na koji se cekalo 3 meseca.

Znaci kompanija koja je kupila ovo razvojno okruzenje je morala da ceka tri meseca da se otkloni bug u osnovnom tipu podataka koji bilo koja aplikacija koristi.

Sada, vojna industrija bi trebalo da bude otporna na ovakve izazove, ali ocigledno da nije. Razvoj F-35 ne ide kako je bilo zamisljeno, troskovi rastu, i onda se izbacuju verzije softvera koje daju bar neke mogucnosti trenutno za ulozene pare, jer bi u suprotnom program bio otkazan. A onda slede patch-evi, itd. Kao da se radi os softveru za kucnu upotrebu, a ne softveru koji upravlja avionom vrednim preko 200 miliona USD.

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Nekako imam osećaj da se to još dugo neće promeniti.

Važno je da se uleti nogom u vrata, a onda kreće karanje sa svih strana i na sve moguće načine.

Kod Rusa i Kineza sigurno ima problema tokom razvoja softvera. Samo teško da će se o tome raspravljati na sva zvona.

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Napisano: 13 Jun 2018 21:47

Major Upset’ As Lockheed Ditches Northrop For F-35 DAS Sensor
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Citat:Northrop Grumman was pushed aside today by Lockheed Martin as it picked Raytheon to build perhaps the F-35’s most important sensor, the Distributed Aperture System.
Promena dobavljača glavnog sistema.
Citat:Lockheed signaled its dissatisfaction with Northrop at the Singapore Air Show in April when Lockheed’s director of F-35 international business development, Steve Over, told Aviation Week: “We’ve found a supplier that can produce a better DAS system at a significantly lower price that has significantly better performance. So, we’re trying to find a way to break that into production right now. It’s somebody other than Northrop.”

i još, proizvedeni 300-ti F-35. Da bi avion radio, bila bi dobra vest. A da je obrnuto je još bolja.
[Link mogu videti samo ulogovani korisnici]

Dopuna: 14 Jun 2018 15:08

Despite some opposition, US on course to deliver F-35s to Turkey on June 21
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Citat:The U.S. government is proceeding with plans to deliver the first F-35 to Turkey, with the country set to accept its first jet on June 21 despite opposition from some in Congress.
Ceremonija 21.6. za turski F-35.

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djox ::RAF dobio prva cetiri F-35B
Four RAF F-35 fighter jets land in UK
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Evo ih

Citat: first four Royal Air Force F-35B of 617sq arriving at RAF Marham
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