F-35 Lightning II

baikal kirjoitti:
F-35:n kehittäminen on kaiketi imaisuttanut jo noin 400 miljardia dollaria. Jos aiotaan valmistaa, tai tullaan valmistamaan ja myymään esim. 2000 kappaletta koneita, niin pelkät tämän hetken kehittämiskustannukset ovat pyöreät 200 miljoonaa dollaria per häpsvärkki. Paljonko tulee maksamaan per yksikkö, jahka sellainen on valmiina ja sotavarusteeksi hyväksyttynä Pirkkalan luolassa? Ottakaa aivo käteen ja pohtikaa.

Kauas ovat pilvet karanneet.

Kyllä..luulen että näiden massiivisten tappokoneiden aika on pian ohi..ja tekniikka niin monimutkaista ettei sitä ole meillä enää varaa ylläpitää ellei sitten puhuta 10-12 koneesta joista lentovalmiina on 2 paria tms.
 
Juke kirjoitti:
Vastassa keskusteluissa on aina joku täysmulkku joka alkaa itse piirrellä ja esittää omaansa tilalle ja väittää että eikö tämä olisi parempi.



Taitaa alkaa olla OT ?

Touche

Todellakin on OT
 
Modern Marvels unohtaa sanoa että jos LAsta lentää NYCiin 2 tunnissa...polttaa 100 000 litraa löpöä !

 
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Kuinka suuri puute on se, että F-35 ei kykene supercruiseen ?

http://en.wikipedia.org/wiki/Supercruise
 
Missä tässä on se valtava kerosiinisäiliö ?

http://edge.liveleak.com/80281E/s/s/20/media20/2013/Mar/1/LiveLeak-dot-com-f57a0775802e-f35cutaway.jpg?d5e8cc8eccfb6039332f41f6249e92b06c91b4db65f5e99818bad1924f45ddd61369&ec_rate=200

Ainoastaan sivuperäsimissä polttoainesäiliöt ? Olisko korkeusperäsimissä myös ?
 

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Juke kirjoitti:
crane kirjoitti:
ja siivissä ja rungossa

Onko Hornetissakin kaikki peräsimet täynnä huilea ?

Melkein kaikki. Hornet on F35-koneen tapaan suorastaan vuorattu polttoaineella, kuten oheisista kuvsta käy ilmi:

4456060768_32887a42e5.jpg

f18-cut.jpg
 
The U.S. Navy is carefully backing away from the troubled F-35 Joint Strike Fighter program — and putting in place a backup plan in case the trillion-dollar, jack-of-all-trades stealth jet can’t recover from mounting technical and budgetary woes. So much for the F-35 being too big to fail.

The Navy’s Plan B is still taking shape. But its outlines are coming into view, thanks in large part to recent comments from its top officer. It involves fewer F-35s (the Navy’ll still buy some) and more copies of the older Boeing F/A-18E/F Super Hornet carrier-based fighter, which the Lockheed Martin-built F-35 was originally meant to replace. In the unlikely event the F-35C — the naval version of the radar-evading plane — gets canceled, the Super Hornet could be upgraded past its current shelf life. The twin-engine F/A-18E/F is already getting new weapons. Extra fuel tanks and some stealth treatments could be added as well.

The Joint Strike Fighter program is many billions of dollars over budget and years behind schedule; it probably can’t deliver a single combat-ready warplane to the Navy before 2018. The Navy has long been the least enthusiastic of the Joint Strike Fighter’s U.S. customers, which also include the Air Force and Marines, each with their own unique variant of the F-35. Since the sailing branch has the youngest fighter force in the military, it has the least urgent need for factory-fresh planes.

And the Navy downplays radar-eluding stealth capability in its war plans, instead preferring to fight its way through enemy defenses or fire weapons from a distance. “It is time to consider shifting our focus from platforms that rely solely on stealth to also include concepts for operating farther from adversaries using standoff weapons and unmanned systems — or employing electronic-warfare payloads to confuse or jam threat sensors rather than trying to hide from them,” Adm. Jonathan Greenert wrote last year in the U.S. Naval Institute journal Proceedings.

Greenert, the Navy’s top officer, is a case study in the Navy’s ambivalence about the Joint Strike Fighter. His Proceedings piece was interpreted as a shot across the F-35′s bow, but Greenert denies he meant any such thing. “We need the F-35C; we need its capability,” Greenert said two weeks ago. “It has stealth, range, big payload capacity and an enormous electronic attack (potential).”

But in the same breath, Greenert hinted that the Navy might buy fewer F-35Cs than the current 260 on order. “The question becomes how many do we buy, and how does it integrate into the air wing,” he said, adding that totally canceling the new plane is unlikely for political reasons. “If we bought no Cs that would be very detrimental to the overall program.”

Any reduction in the number of Joint Strike Fighters purchased subtracts from Lockheed’s intricately laid-out production plan, therefore increasing the cost of the remaining jets. However, buying fewer F-35Cs and more improved F/A-18s might be possible without utterly wrecking the Joint Strike Fighter program.

A Pentagon analysis obtained by Reuters found that reducing the Pentagon’s overall acquisition of F-35s from 2,400 copies to just 1,500 would increase the per-unit price of the remaining planes just nine percent. Today a single F-35 costs more than $100 million and an F/A-18 around half that much. Swapping F-35Cs for Super Hornets could save the Navy, and by extension the Pentagon, billions of dollars. Not to mention the Navy is already thinking about a brand-new fighter design to come after both the JSF and Super Hornet.

With improvements, the Super Hornet could equal the Joint Strike Fighter’s combat capability, albeit with different tactics — and, admittedly, this is highly debatable. The Navy is working to make the F/A-18E/F a long-range missile-hauler with some optional stealth qualities, as opposed to the fully stealthy F-35 designed to slip past enemy defenses at close range and drop guided bombs before sneaking away.

The Navy has already budgeted for a new 500-mile-range anti-ship and land-attack missile for the Super Hornet and this year will also be testing overwing fuel tanks that could add hundreds of miles to the jet’s range, possibly allowing it to out-distance the F-35. The F/A-18E/F could also get extra radar-absorbing coatings and a stealthy underbelly pod for carrying all its weapons — though the Navy has yet to fund these options.

In many ways, a shift from the F-35 to an enhanced F/A-18 is the comfortable move for the Navy. The sailing branch has long favored the kind of stand-up fighting the Super Hornet is best at. While current Air Force war plans call for F-22 and B-2 stealth planes to covertly infiltrate enemy territory, the Navy foresees using radio noise-generating Growler jamming planes to overwhelm enemy defenses and allow the Super Hornets to strike.

For the flying branch, adding stealthy F-35s does not mean fundamentally altering its strategy, whereas the Navy would be forced to rewrite decades-old doctrine.

In any event, the Navy can afford to wait and see whether the Joint Strike Fighter overcomes its recent groundings, performance downgrades and other problems. Boeing’s St. Louis Super Hornet factory has enough orders to keep its lights on into 2015, after which the Navy could put into effect some version of its aviation plan B. Or it can cast its lot with the more risky F-35.
http://www.wired.com/dangerroom/2013/03/navy-stealth-plan-b/
 
Niin sotilaille/kenraaleille on ihan sama millä ne missiilit sinne kohteeseen kuljetetaan...mielellään huokeella ( voi olla kassa tyhjä myös siellä ).
 
F-35 siipi lienee ainakin 6% paksu..eli paksumpi kuin missään tunnetussa mach 2 hävittäjässä; http://www.dept.aoe.vt.edu/~mason/Mason_f/F35EvanS03.pdf

Toisaalla oletettiin jopa 8-10% paksua sipeä.

http://www.pprune.org/archive/index.php/t-464661.html
 
Kehitys jatkaa kehittymistään...

[video=youtube]http://www.youtube.com/watch?feature=player_embedded&v=atdre1joRsY[/video]
 
Yhdysvltojen superhävittäjä F-35 on syvissä vaikeuksissa

Uusin ongelma koskee lentäjien näkökenttää ohjaamosta ja sitä on mahdotonta korjata jälkikäteen. Näkökenttä on tärkeä kaartotaistelutilanteessa.
Lisäksi projektin alku oli huijausta kun koneen etuja liioiteltiin ja kustannuksia esiteltiin alakanttiin. Kun huomattiin etttei mumerot täsmää oli myöhäistä hylätä ohjelmaa.

HS
 
Niin no jos niskan takana on fani VTOL fania varten ja sama kone on molemmissa versioissa pohjana..niin huonohan siitä on taakse katsella.
 
Tuosta kokoonpanolinjasta tuli mieleeni. Miten kokoaminen etenee?
Onko koneen koko kokoonpanon tuossa kohtaa ja samaa tahtia kootaan kaikkia taustalla näkyviä koneitä? Vai eteenekö kone linjalla pisteeltä toiselle kuten auto?
 
Juke kirjoitti:
F-35 siipi lienee ainakin 6% paksu..eli paksumpi kuin missään tunnetussa mach 2 hävittäjässä; http://www.dept.aoe.vt.edu/~mason/Mason_f/F35EvanS03.pdf

Toisaalla oletettiin jopa 8-10% paksua sipeä.

http://www.pprune.org/archive/index.php/t-464661.html

F-35 hävittäjää ei ole suunniteltu lentämään mach 2 nopeuksia.

The F-35A known as AF-1 achieved the F-35’s maximum design limit speed of Mach 1.6 for the first time on Oct. 25.
http://defensetech.org/2011/11/04/f-35-jsf-flight-test-update/
 
Teräsmies kirjoitti:
Juke kirjoitti:
F-35 siipi lienee ainakin 6% paksu..eli paksumpi kuin missään tunnetussa mach 2 hävittäjässä; http://www.dept.aoe.vt.edu/~mason/Mason_f/F35EvanS03.pdf

Toisaalla oletettiin jopa 8-10% paksua sipeä.

http://www.pprune.org/archive/index.php/t-464661.html

F-35 hävittäjää ei ole suunniteltu lentämään mach 2 nopeuksia.

The F-35A known as AF-1 achieved the F-35’s maximum design limit speed of Mach 1.6 for the first time on Oct. 25.
http://defensetech.org/2011/11/04/f-35-jsf-flight-test-update/

Aivan..mutta ei myöskään lennä supercruisella;

Se on valtava puute..ja askel taaksepäin.

Kiinalainen traineri Hongdu L-15 lentää mach 1.6 nopeutta.
 
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Italy's new party Cinque Stelle by Beppe Grillo at the head intends to bring a motion to stop the purchase of 90 F-35, according to Svenska Dagbladet today. Can not find the article online, so here are some quotes from the paper magazine page 22:

The purchase has been controversial, and last year dropped Italy Order 130-90 plan, which is reported to have saved 5 billion. But the bill still stops at around 10 billion for fighter planes, according to Reuters.

- We plan to present a motion in Parliament to completely abandon the plans, says Alessandro Di Battista representing the party in the Chamber of Deputies, and added that it also intends to propose that the Italian more than 4,000 soldiers in Afghanistan withdrawn immediately.
Femstjärnerörelsen can not by itself derail fighter project, since the left and right alliances have more votes. But the party's move increases the political mobilization against the purchase. Both the ecological SEL Left and the Democratic Party is against the deal.
 
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