Starting an F-35 blog

[milosh]

SNR-125 can detect target with RCS = 10m2 from 80 nm (148 km), according to radar equation, 10 times reduction in RCS will decrease detection range down to 56%, so a target with RCS = 0.001 m2 will be detected at 7.87 nm (or 14.5 km), F-117 was tracked and detect at distance less than 14 km so F-117 rcs in X-band is less than 0.001m2.

That is Pechora 2M not old Pechora.

[garrya]

First post after 5 years, hope you guys like it.

https://basicsaboutaerodynamicsandavion ... -missiles/

[sprstdlyscottsmn]

Great stuff!

[Corsair1963]

Great indeed..........

[garrya]

Thanks for your kind words guys.
BTW, Does anyone know to extend the size of the image in wordpress?
Even when I set it as full size, it still get resized to very small

[eloise]

delightful, hope you don't mind me taking this to other forum

[sprstdlyscottsmn]

Thanks for your kind words guys.
BTW, Does anyone know to extend the size of the image in wordpress?
Even when I set it as full size, it still get resized to very small

Capture.PNG

Sorry I know nothing about that.

[basher54321]

Nice one garrya - sorry never used wordpress myself - not very helpful I know.

[garrya]

Thanks for your kind words guys.
BTW, Does anyone know to extend the size of the image in wordpress?
Even when I set it as full size, it still get resized to very small

Capture.PNG

Sorry I know nothing about that.

Nice one garrya - sorry never used wordpress myself - not very helpful I know.

No worry, I figured it out

[garrya]

Next post is up.
This time , it is RCS simulation of SPEAR missile
https://basicsaboutaerodynamicsandavion ... r-missile/

[garrya]

F-35 RCS simulation
https://basicsaboutaerodynamicsandavion ... imulation/
J-20 and Su-57 coming soon

[sprstdlyscottsmn]

That really goes to show what could be done with shaping alone. Fantastic.

[spazsinbad]

"...In short, the four most important aspects of stealth are ”shape, shape, shape and materials,” to quote Lockheed Martin analyst Denys Overholser, whose pioneering work resulted in the F-117 Nighthawk, the world’s first operational stealth warplane...." https://www.smithsonianmag.com/smart-ne ... 160495351/ Colin Schultz 13 Dec 2012

[spad_s.xiii]

:mrgreen:
F-35 RCS simulation
https://basicsaboutaerodynamicsandavion ... imulation/
J-20 and Su-57 coming soon

Very nice - impressive amount of work!

Have you compared your results with others?

[garrya]

Very nice - impressive amount of work!
Have you compared your results with others?

If you mean “have I compare F-35 result wih J-20 and Su-57” then yes, I have. I already got the simulation data of all 3 aircraft, I just haven’t got the time to write the post because I’m currently on a business trip and I can only bring my laptop.
If you mean “have I compare my simulation result with others people result then I haven’t”. There are 3 main reasons for that: firstly, other people doesn’t model the inlet and cooling duct correctly. They either put a perfect RAM with 100% absorbing capability inside it (effectively make the inlet 100% invisible). Or they go completely opposite direction, puting no RAM inside the duct but with a flat plate inside (effectively make S-duct or inlet blocker literally pointless. Secondly, when doing radar scattering simulation, people often have the habit of making very rough generic model of the aircraft. As in they would just ignore all the little small bumps and humps and little sensor hub as well as the pitot tube. That really affect the magnitude of the scattering lobes and their arrangement. Thirdly, they often use PO to save time and computing resource, so their simulation isn’t very accurate, especially at lower frequencies.