F-35 Joint Strike Fighter News, Videos and pics Thread

mig-31

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Chaff :
S300/400 has a plethora of radars on every possible frequency between 0.3-12GHz.
Example Iran bought three different type (at least) radar for its S300, and each firing unit has 3 launchers and 2 different frequency radar.
Now, the quoted data is for the X band radar, NOT for the lower frequency ones.
Contrast to popular belief, low frequency radar doesn't suddenly increase RCS of stealth aircraft from -30 dBsm to upward 10 dBsm.
Stealth aircraft still have lower RCS than conventional aircraft at low frequency.
F-35 itself has some improvement at low frequency compared to F-117
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The equation for monostatic radars using the 1/range^4 equation, but the semi active seeker using 1/((radar distance)^2*(missile distance)^2) equation (bistatic).
Means if the small missile head can get 1 km close to the airplane then it will see it ,regardless of ram,shaping or nationality of the aircraft.
Depend on if the aircraft has some support jamming or not
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And the "drone swarm" can be easily sorted out with different band radars.
The size of the drones small , means they will resonate for different frequencies than the big airplane.
A monopulse VHF / S band radar will sort out the drones from the f35 ,without any trouble.
You can try it as well, use the car remote (0.8-1m wavelength, depends on country ) on different test postures on the edge of its rang.
If the shape of the body will be right compared to the quarter wavelength then it will resonate, and amplify the radio emission (compared to the standalone emission) .
That happens if the object size is comparable to the wavelength of the radar. (less than 10 wavelength )
The F-35 itself is bigger than the drones, but its wingtip, vertical tail tips and horizontal tails tips are not longer than a drone. So when the wavelength of your radar is enough to cause resonance from a drone fuselage, it will also cause resonance from F-35's wing and tail tips.
Besides, creeping return doesn't always increase the total RCS of aircraft, it depends on whether it interfered constructively or destructively with the specular return
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mig-31

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I am sure @Jura will enjoy some marketing gush. Oh don’t worry it’s European.
SPEAR EW.
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Based off the SPEAR 3 concept which takes parts of the Brimstone adds wings and a mini P&W engine for a loitering or mini cruise missile. Now apparently adding decoy and Electronic warfare.
They replaced seeker and warhead for EW and more fuel
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Anlsvrthng

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Contrast to popular belief, low frequency radar doesn't suddenly increase RCS of stealth aircraft from -30 dBsm to upward 10 dBsm.
Stealth aircraft still have lower RCS than conventional aircraft at low frequency.
5-png.620461
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.
They replaced seeker and warhead for EW and more fuel
spear-ew-2.png
Without considering the range/speed / geometrical limitations of this tactics , if the F-35 needs 1-2 expensive EW cruise missile to do the job, then why not the cruise missiles destroy the targets in first place ?
 

mig-31

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Yes, the interference between Creeping wave return and Specular return is what caused Mie scattering
General about radar refection: there are 3 main types
Specular returns are the kind of returns where the surface acts like a mirror for the incident radar pulse. Most of the incident radar energy is reflected according to the law of specular reflection ( the angle of reflection is equal to the angle of incidence). This the kind of return that most stealth aircraft reduce by their shaping.
Traveling/Surface wave return: an incident radar wave strike on the aircraft body can generate a traveling current on surface that propagates along a path to surface boundaries such as leading edge, surface discontinuous …etc, such surface boundaries can either cause a backward traveling wave or make the wave scattered in many directions. Stealth aircraft reduce this kind of return by serrated panels and edge treatment
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Creeping wave return: this is a form of traveling wave that doesn’t face surface discontinuous and not reflected by obstacle when traveling along object surface so it is able to travel around the object and come back at the radar. Unlike normal traveling wave, creeping wave traveled along surface shadowed from incidence wave (because it has to go around the object). As a result, the amplitude of the creeping wave will reduce the further it has to travel because it can’t feed energy from the incident wave in the shadow region. Creeping wave return are most prominent when wavelength approaches the size of object.
but if you look at my photo earlier you will see the magnitude of creeping wave return is very small compared to specular return, so actually even at low frequency stealth aircraft still very stealthy compared to conventional aircraft.
Or if you don't like theory, you can see the lecture given by Zoltán Dani ( the man who shot down F-117) where he stated the distance which he can detect F-117 even with lowest frequency setting. I posted the video above.
Without considering the range/speed / geometrical limitations of this tactics , if the F-35 needs 1-2 expensive EW cruise missile to do the job, then why not the cruise missiles destroy the targets in first place ?
The same reason you can't just destroy targets with Tomahawk. You don't always know the exact target location before hand. You need something with good sensors to come in and find the target for you.
 

mig-31

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file.php


Notice of Contract Action (NOCA) - The Long Range Systems Division (AFLCMC/EBJ) intends to solicit proposals from limited sources and award contracts for the development and integration of an air-launched hypersonic conventional strike weapon (HCSW) with both fighter and bomber aircraft platforms. Integration will include mission planning operations and support. The HCSW will provide a prompt (Hypersonic/Hypervelocity), precision strike capability against high-value, time-critical fixed and relocatable surface targets in a single or multi-theater challenged (A2/AD) environment. It will utilize Global Position System (GPS)/Inertial Guidance System (INS) for navigation and terminal guidance with a Government Furnished Equipment (GFE) warhead. It is anticipated that the contract will be awarded in the 1st quarter of FY18. The contract will include all necessary effort through Engineering and Manufacturing Development (EMD).

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Flight-test infrastructure within the U.S. Air Force is evolving as a new generation of faster and longer-range air-launched weapons approach a four-year surge of flight-test activity.



By 2023, the U.S. Air Force plans to introduce the AGM-183A Air-Launched Rapid Response Weapon and the Hypersonic Conventional Strike Weapon—which boast double-digit Mach numbers and a maximum range measured in the thousands of miles. About 40 hypersonic flight tests, including prototypes of new Army and Navy hypersonic weapons, are scheduled over the next four years.



- RQ-4s selected as hypersonic test monitors

- Wave gliders emerge as option for overwater tracking and scoring



As those weapons are evaluated, the Air Force also plans to introduce the Lockheed Martin AIM-260 Joint Advanced Tactical Missile by 2022, which features “significantly greater” range than the Raytheon AIM-120 advanced medium-range air-to-air missile. The Long-Range Standoff missile also will enter development in 2021. And the suffix “extended range” is being added to a host of air- and ground-launched missiles in the U.S. military’s stockpile.



For each such weapon, the Air Force must develop a concept and infrastructure to monitor and relay telemetry data from the missile over the full length of the flightpath, including the ability to terminate the test if a safety issue develops.

The Defense Department has conducted hypersonic flight tests before, but the volume of planned testing over the next four years adds another challenge. The flight tests for DARPA’s Falcon Hypersonic Test Vehicle-2 program seven years ago was supported by dozens of assets, including ships and patrol aircraft stretching far out into the Pacific Ocean.



But that approach is “incredibly expensive,” says Maj. Gen. Christopher Azzano, commander of the Air Force Test Center (AFTC).



The Air Force has developed a new concept to provide the same telemetry relay capability using a small number of high-altitude unmanned aircraft systems, rather than multiple aircraft at lower altitudes and ships.



“What we’re looking at now is an airborne array of RQ-4s that would enable us to do the same thing with far fewer platforms and fewer people, while still covering the same space,” Azzano says.

The new approach relies on antenna technology that can transmit telemetry data amid the sustained heat and pressure of hypersonic flight, where skin temperatures of the glide body or missile escalate up to 3,600F (2,000C).



The Air Force is also considering other applications of unmanned technology for long-range flight tests. The AFTC is an enterprise that includes: a wind tunnel complex at the Arnold Engineering Development Center in California, a flight-test center at Edwards AFB, California, and a weapons and intelligence, surveillance and reconnaissance test center at Eglin AFB, Florida. The facilities at Eglin include the Gulf Test and Training Range. The 400-nm length of the range is not long enough to support hypersonic weapon testing, but it may serve as a test site for new solid rocket motors and booster rockets developed for hypersonic weapons.



“I need to be able to relay telemetry, I need to have flight termination, I need to do scoring eventually out in the open ocean for where a weapon would impact,” says Brig. Gen. Scott Cain, commander of the 96th Test Wing at Eglin. “There are actually technology development programs going on to do just that."



One technology cited by Cain is an unmanned vehicle called a wave glider, which uses the energy from ocean waves to generate power. It uses that generated power to produce thrust, allowing the vehicle to remain in a specific location for weeks or months.



“If you put the right measurement devices on them, that’s essentially the concept,” Cain says.



The Gulf Test and Training Range is also expanding, with plans to install instrumentation from the Florida Panhandle to the Florida Keys. The Air Force has run fiber-optic cable about halfway down the west coast of Florida so far, Cain says.



“We’ve started an underwater survey to the Keys to look at where the Gulf Range extension goes next,” Cain says. “As the range increases, we’re going to use the whole 400-plus miles of the range more frequently.”

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I suspect that the hypersonic missile concept we saw with F-35 is supposed to show HSCW instead of HAWC.

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I suspect that because first of all the missile has no air inlet and HAWC is air breathing missile. Second of all, in the links they said

Lockheed Martin has revealed a concept for a variant of its air-launched Hypersonic Air-breathing Weapon Concept hypersonic missile, or HAWC, as an armament option for U.S. Navy's F-35C Joint Strike Fighter, and potentially other aircraft, possibly in a maritime strike role. HAWC, which has so far been under development as a land attack weapon, is set to fly for the first time before the end of the year. The artist's conception of an F-35C firing a HAWC derivative first appeared at the Navy League's annual Sea, Air, Space convention just outside of Washington, D.C., on May 6, 2019. The rendering shows the stealth aircraft configured to carry two of these weapons externally, one under each wing. In April 2018, the U.S. Air Force, working together with the Defense Advanced Research Projects Agency (DARPA), awarded Lockheed Martin a contract worth approximately $928 million for the development of HAWC.

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But Lockheed martin was awarded 928 millions to develop HSCW instead of HAWC

the first weapon, the AGM-183A Advanced Rapid Response Weapon (ARRW, pronounced “Arrow”) is an outgrowth of the DARPA’s Tactical Boost Glide program. ARRW is a rocket carried aloft by an aircraft such as a B-52 bomber and has a top speed of up to Mach 20. This makes it up to four times faster than Russian and Chinese hypersonic weapons, including Starry Sky 2 and Kinzhal. The Air Force recently awarded Lockheed Martin a $480 million contract to develop the ARRW, with an eye towards operational capability in 2021.

The second weapon is the Hypersonic Conventional Strike Weapon (HCSW, or “Hacksaw”). A solid fuel rocket with GPS guidance, HCSW is also designed to be carried by aircraft with a planned in-service date of 2022. Lockheed Martin received $928 million to work on Hacksaw in April 2018.

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Lockheed has an ever larger contract, $928 million, to build a different kind of hypersonic system, also for the Air Force, called the Hypersonic Conventional Strike Weapon (HCSW)

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inside
Lockheed declares F-35 stealth coating ‘rock solid’
Steve Sheehy, F-35 director sustainment strategies and campaigns ... says that standard practice formerly involved issuing contracts for individual jets before contracts for spare parts.

“[This meant] spares are constantly chasing the aircraft, driving a problem with supply. We’ve fixed that, putting over $2 billion of our own money to fund all these spare parts. So, in 2020 when an aircraft arrives, the spares will already be in place. That will fix that problem. The spares will be populated for those airframes.”

tries to sound as if LockMart was a charity, LOL!
 
Sep 29, 2019
noted
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is deploying F-35 fighter aircraft to Iceland under
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’s peacetime Air Policing mission safeguarding Icelandic airspace. Italy is first Ally deploying modern fighter aircraft in a NATO mission. Upon certification for the mission by Combined Air Operations Centre Uedem, Germany, the Italian task force will execute the special mission out of Keflavik Air Base
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. For Italy it is the fifth time – and the second time in 2019 – to support this NATO mission that showcases Allied solidarity, readiness and cooperation.
Read more at
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and
Mission accomplished for the Italian F-35 Lightning II stealth jets.
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but did they fend off any Russians or something?
 
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