F-35 Joint Strike Fighter

[asianobserve]

Actually Nostradamus uses low frequency, it is better for extending range as high frequency waves lose cohesion through atmospheric conditions. To make a simple analogy, it is like AM vs FM radio. AM will travel much farther at much lower power. The lastest American OTH radars uses the same principle, it is just not as large or as complex as Nostradamus. When you hear Chinese radars using VHF to detect stealth aircraft you simply have to laugh at it.

All OTC uses low frequency. But still it needs a lot of power produce enough energy to bounce off radar waves on the ionosphere. The use of low frequency by OTCs also allow it to be able to sometimes detect stealth planes but without the ability to get a firing solution. OTC is purely a surveillance radar. It gives you general picture over the regular radar horizon.

 

[Wisemarko]

Jindalee Over-the-horizon Radar

Description


Jindalee is an Aboriginal word for a place [the] eye cannot see, or somewhere beyond where the eye can see, like over the horizon. The original project to develop an over-the-horizon radar in Australia was called Jindalee and the operational outcome of that project called JORN (Jindalee Operational Radar Network) continues the use of the iconic name Jindalee.

Over-the-horizon radar operated in the High Frequency frequency band, unlike conventional radars whivch operate in the microwave band. The signals are bounced off the underside of the ionosphere to the target and back by the same route. Powerful computers analyse the returned signals to provide useable data.

Australia has been a leader in the development of the technology and the JORN system, operated by the Royal Australian Air Force, with a coverage of over thirteen million square kilometres to the north and west of Australia is the most advanced such system now in operation. The radar receives returns from aircraft and ships in its target area.

The Defence Science and Technology Organisation carried out its first research into the system in the early 1950s. The Jindalee Projects (Stages A & B) from 1970 to 1982 demonstrated the success of the Australian technology and research continues to improve the system's performance. The ultimate range and performance of the radars are classified however publically available from the RAAF and otrher sources give an insight into a very powerful surveillance system.


The JORN network is operated by No. 1 Remote Sensor Unit (1RSU). Data from the JORN sites is fed to the JORN Coordination Centre at RAAF Base Edinburgh where it is passed on to other agencies and military units. Officially the system allows the Australian Defence Force to observe air and sea activity north of Australia to distances up to 4000 km. This encompasses all of Java, Irian Jaya, Papua New Guinea and the Solomon Islands, and may include Singapore. However, in 1997, the prototype was able to detect missile launches by China over 5,500 kilometres (3,400 mi) away.

JORN is so sensitive it is able to track planes as small as a Cessna 172 taking off and landing in East Timor 2600 km away.

The development of Jindalee was not subjected to much public scrutinay as the development was so successful, To this day few Australians are aware of the capabilities of JORN and its ever-vigilant surveillance of Australia's Northern Approaches.

 

[asianobserve]

Raytheon's 2014 patent on ship based OTH:

Abstract
A ship-based over-the-horizon (OTH) radar system provides mobile, persistent, wide-area air and ship surveillance across large ocean expanses and in anti-access/area denial (A2AD) environments. A transmit ship may include a log-periodic antenna (LPA) array adapted for use on a ship and a receive ship may include a plurality of monopole or dipole whip antennas. The transmit/receive antenna is fronted by a ground screen, which can be sized taking into account the sea as a naturally reflective surface. The transmit/receive ship can include advanced software to compensate for ship movement and synthetic aperture radar (SAR) techniques can be employed to includes the effective size of the radar receiver aperture. A modular design, using standard commercial container ships and shipping containers, allows for rapid deployment/stowage of radar equipment. Related methods are also described.

https://patents.google.com/patent/US9423495B1/en

 

[asianobserve]

F-35C demo at Blue Angels Homecoming

 

[StealthFlanker]

It is good that you can Google a history image, the problem is your information is 50 years out of date. Cobra Mist AN/FPS-95 opened in 1972 and closed in 1973. They never could get rid of the background noise and never put it into operational use. Those towers are used to broadcast BBC radio.

The US has plenty of OTH radars... in the US. They have one in Cyprus looking at the ME and Southern Russia, Nostradamus is the only one monitoring Northern Russia where Tu-160s are launching from.

If you read my post carefully, I was comparing the performance of Cobra shoe to Nostradamus, assuming cobra shoe use the same kind of radar as Cobra Mist. The point is that, there is no evident whatsoever regarding the superiority of Nostradamus over other OTHR.

Which is why the Russians fly their bombers well out of the range of LOS radars. Nostradamus is the only one that can see into the Barents Sea where they skirt the edge of conventional radars of the Scandinavian countries. I don't know of any shore based SPY-1 sitting on a small frozen island that can monitor that far. Aegis destroyers certainly don't sit up there on a regular basis.

If these Tu-160 attack US, they still have to fly through the ocean where they can be tracked by SPY-1.
Besides, cruise missile from Tu-160 approach US are tracked by JLENS also

 

[StealthFlanker]

Actually Nostradamus has detected Chinese missile launches 5500km away, it is unmatched in performance.

Pretty that wasn't Nostradamus but the Canadian Jindalee

Actually Nostradamus uses low frequency, it is better for extending range as high frequency waves lose cohesion through atmospheric conditions. To make a simple analogy, it is like AM vs FM radio. AM will travel much farther at much lower power. The lastest American OTH radars uses the same principle, it is just not as large or as complex as Nostradamus. When you hear Chinese radars using VHF to detect stealth aircraft you simply have to laugh at it.

All OTH radar uses low frequency

 

[Armand2REP]

Pretty that wasn't Nostradamus but the Canadian Jindalee

Perhaps but Nostradamus can map the lunar surface so the range is far greater.

All OTH radar uses low frequency

That is definitely not true.

 

[BON PLAN]

https://www.defensenews.com/naval/t...-jet-is-it-anyway-the-drift-season-ii-vol-ii/

All in, the cost per flight hour is about $35,000, which is batty. The F-18, according to NAVAIR earlier this year, costs about $18,000 per flight hour.

 

[Wolfhound]

https://www.defensenews.com/naval/t...-jet-is-it-anyway-the-drift-season-ii-vol-ii/

All in, the cost per flight hour is about $35,000, which is batty. The F-18, according to NAVAIR earlier this year, costs about $18,000 per flight hour.

Interesting. Especially how the article focuses on the markup done by Lockheed Martin and not the plane itself.

 

[asianobserve]

Coming in 2020: A new technology that will link F-35 simulators across the globe

Next year, Air Force F-35 pilots will be able to hop into a simulator and practice large-scale coordinated attacks with other F-35A users in simulators around the globe, Lockheed Martin’s head of F-35 training said Tuesday.

The capability, called Distributed Mission Training, will allow an unlimited number of F-35 simulators to be networked together, enabling high end-training, said Chauncey McIntosh, Lockheed’s vice president for F-35 training and logistics.

https://www.defensenews.com/digital...imulators-across-the-globe/?utm_source=clavis

 

[asianobserve]

A good illustration on how good Western engines are. In this particular case a bird was ingested into the lift fan of an F-35C while it was hovering to land on board HMS QE. The plane landed safely and initial checks showed no damage to the plane.


Interestingly, it seems that the RN is employing a falcon to go after smaller birds on board HMS QE.

 

[BON PLAN]

A good illustration on how good Western engines are. In this particular case a bird was ingested into the lift fan of an F-35C while it was hovering to land on board HMS QE. The plane landed safely and initial checks showed no damage to the plane.

The lift fan is a cold part. A big ventilator. It proves nothing about the durability of a jet engine, and specially the hot core.

 

[asianobserve]

The lift fan is a cold part. A big ventilator. It proves nothing about the durability of a jet engine, and specially the hot core.

I would say that a lift fan is the most sensitive part of the F-35C engine. Its blades are not as hardened as the blades in the main engine.



If a Mig-29, which has the benefit of 2 engines and lift on its wings during landing or take-off can be brought down by a bird, the F-35C is even more vulnerable especially on hover since its lift fan as I said is not as hardened as the main engine, it has only 1 engine and its wings are not producing lift. But in this case the F-35C took in a bird through its lift fan without any apparent damage.

 

[StealthFlanker]

Perhaps but Nostradamus can map the lunar surface so the range is far greater.

? you know the moon is many million times bigger than an aircraft right?. Beside, saying that it map the lunar surface would give the impression that it can see the moon in very high resolution, but the return is like this infact

That is definitely not true.

What OTH radar working at X-band, S-band or Ku-band then?
The so called HF (high frequency) band actually has very low frequency at 3-30 MHz, far far lower than the operating frequency of 99.99% radar
Jindalee operating frequency is between 5-30 MHz
HFSWR operating frequency is between 3.5-10 Mhz
Nostradamus operating frequency is between 3-30 Mhz
29B6 Container operating frequency is between 3-30 Mhz
AN/FPS-118 operating frequency is between 5-28 Mhz
Podsolnukh E operating frequency is between 3-30 Mhz
Duga operating frequency is between 7-19 Mhz
AN/FPS-95 operating frequency is between 6-40 Mhz
None of that can be considered high, for comparison Sea based-X operate at X band which is between 8-12 GHz

 

[bhramos]

#Canada Rejects The Pricey F-35 Joint Strike Fighter

 

[Armand2REP]

#Canada Rejects The Pricey F-35 Joint Strike Fighter

I don't know if it is such a good idea to keep posting this guy's tweets. He doesn't even check the date of the story... I mean 2012?

 

[bhramos]

I don't know if it is such a good idea to keep posting this guy's tweets. He doesn't even check the date of the story... I mean 2012?

oops sorry bro.................... i'll check again before posting...... that guy is me

 

[asianobserve]

I don't know if it is such a good idea to keep posting this guy's tweets. He doesn't even check the date of the story... I mean 2012?

I will not totally rule out Trudeau insisting on disqualifying the F-35 since that is his campaign promise. But it'll be interesting to know if he will really press the button since the RCAF is solidly behind the F-35 and Canada is an industrial partner and several Canadian suppliers are earning from the F-35 program.

 

[asianobserve]

This is an intetesting tidbit about yhe F-35 stealth coating:

Lockheed’s F-35 factory in Fort Worth, Texas, has a doormat made from the jet’s low-observable skin. “Every year they pick it up and check it, and it still holds that LO quality,” Sheehy says.

Steve Over, director international business, adds: “It’s seen tens and tens of thousands of steps. People jump on it, stomp on it... it’s just one thing we use to prove the durability of the coating system.”

More importantly, they contend, the coating is easily applied in the field and requires no environmental control facility as with previous versions of stealth aircraft. Lockheed says the interval between maintenance events for the F-35’s low-observable coating is now 19h – better than the targeted 9h.

https://www.flightglobal.com/news/articles/lockheed-declares-f-35-stealth-coating-rock-solid-461721/

 

[asianobserve]

Turkey hopes to still receive F-35 stealth fighters from US
https://mobile.almasdarnews.com/article/turkey-hopes-to-still-receive-f-35-stealth-fighters-from-us/

Pride will be swallowed when it comes to F-35. But you cannot have it both ways.