The Su-57 Shares ONE Thing with the Raptor - Round Pegs in Square Holes - Part 6 - video Dailymotion

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Transcript

00:00If you are a military aircraft fan, you may already know an interesting fact.

00:05Fins of the AMRAAM have been clipped to fit into the base of the F-22.

00:12Amateurs!

00:18The Su-57 is, in many aspects, a quantum leap for Russian aerospace,

00:24and weaponry is no exception.

00:26What is going to fit in the Su-57 base is something new and bespoke.

00:32But it was a long road to get there.

00:33For example, the first payload separation tests happened only in 2016.

00:39In fact, bespoke ejectors had to be developed to eject bespoke weaponry.

00:44But I'm running ahead of me.

00:45The Su-57 has two large weapon bays in the center fuselage between the engine nacelles.

00:58Two small armpit bays are placed under the wing in the form of protruding fairings.

01:07The Russians call them quick launch bays.

01:09The two ventral bays contain the main armament,

01:12while the two armpit bays contain one single weapon, the Dimple R-74M2.

01:25To obtain clean separation, three models of bespoke ejectors had to be developed.

01:30The UKVU-50U is for loads up to 700 kilos,

01:34while the smaller UKVU-50L is for smaller loads up to 300 kilos.

01:40They are interchangeable and they can be installed in the main weapon bays as required.

01:45The VPU-50 is a small retractable device to launch the R-74M2 from the armpit bay.

01:54And when stealth is not a concern, the Su-57 has four on the wing station,

01:59plus two pylons under the engine nacelles.

02:03And the armament computer...

02:05Well, that one is unknown.

02:08We know nothing about the electronics controlling the weapons.

02:20The Su-57 features a cannon.

02:22It uses the MMPU-50 mount containing the classic GSH-301 single barrel 30mm cannon.

02:32It has a relatively modest 150 rounds available and it is located at the root of the right wing.

02:40All considered is a pretty traditional installation.

02:44More interesting is the fact that since Russian weapons tend to be a bit bulkier

02:49than the Western equivalents, some bespoke weapons had to be developed for the Su-57.

02:55The already mentioned R-74M2 is an improvement of the R-74 already in service with the Russian Air Force,

03:04which in turn is a development of the R-73.

03:08The weapon is considered to be an excellent short-range air-to-air missile

03:13with an off-boresight angle of about 75 degrees.

03:17The M2 version has a reduced cross-section to fit into the base,

03:21but also has an improved engine and a two-way data link,

03:25meaning that the missile can be launched in lock-on after launch mode.

03:31Actually, it was the perfect opportunity to evolve the weapon.

03:36The R-77 was considered to be the equivalent of the American AMRAAM

03:43and since the appearance of the AMRAAM-D version, it was a bit lagging behind.

03:51Actually, the air-breathing R-77PD could have been a game-changer in the same way the Meteor is,

03:59but we have lost the tracks.

04:02We don't know if it is still being developed,

04:04we don't know if there is any plan to actually produce it serially.

04:08Visually, the R-77M looks different than the R-77

04:12because it has abandoned the distinctive grid fins.

04:17They have been replaced by conventional aerodynamic surfaces,

04:21apparently the reason being to reduce the radar signature.

04:26Apart from this, the weapon has been vastly improved.

04:29The Sikher is completely new,

04:31is now an AESA radar with all the advantages that come with this type of radar.

04:35Since the more modern electronics require the less room inside the fuselage of the missile,

04:41the fuel fraction has been increased.

04:43The propulsion is a modern dual-pulse engine,

04:47but with an interesting feature.

04:49The interval between the launch impulse and the sustain impulse

04:54is variable and programmable at launch.

04:58In this way, the weapon energy management is much more versatile,

05:03and it should translate in a much better terminal energy.

05:06In July 2017, Wimpel started the firing test of the Izdeliye 810,

05:13a very long-range air-to-air missile

05:16designed explicitly to fit inside the base of the Sukhoi 57.

05:22Very little is known about this weapon.

05:24It seems to be the last derivative of a family of heavy air-to-air weapons,

05:34starting with the R-33, evolving in the R-37 and R-37M.

05:41These are powerful weapons with ranges up to 300 km in ideal conditions,

05:46and with large dual-mode seekers.

05:50The Izdeliye 810 is expected to be an even improved version of these weapons.

05:57We can only wait and see.

06:05The same problem that air-to-air missiles had was even more relevant for air-to-ground weapons.

06:10To fit into the base, they have to be shorter than 4.2 meters.

06:15The section may be inside a square or 40 by 40 centimeters.

06:20The main weapon seems to be a missile known as KH-69,

06:26and very little is known about it.

06:29We know that it has a square fuselage,

06:31and two weapons can fit snugly inside each bay.

06:35It is a medium-range cruise missile, roughly equivalent to the European Storm Shadow,

06:41designed to attack high-paying targets at known coordinates.

06:46A KH-59M2 exists and seems to be the export version of the KH-69,

06:54and it is already available on the market.

06:56However, it is not clear which of the two has been really developed before.

07:02Another bespoke design is the Raduga KH-58U SHK,

07:09which is again a bespoke version of the already existing Raduga KH-58U.

07:17The KH-58U has been modified with foldable fins to fit into the base,

07:22and the opportunity has been seized to actually improve, as usual, the seeker and the engine.

07:27And with the new engine, the missile can reach a remarkable Mach 3.6.

07:33While obviously there are also standard production weapons that fit into the base,

07:39the KH-38M is part of a family of new air-to-ground missiles

07:45designed to replace the historic KH-25 family.

07:50The KH-38M is a family of medium-short-range weapons,

07:56available with different seekers, as the Russians are used to do.

08:00The range varies a lot with the launch speed and height,

08:04but roughly we are talking about weapons in the class of 50 km range,

08:10even if exists a Grom version of the weapon with two foldable wings

08:17that turn it into a small cruise missile.

08:21The Grom maximum range is estimated to be about 120 km.

08:26A very new family of bombs are the KAB-250L,

08:30apparently developed as a reply to the American small-diameter bomb.

08:35As usual, we have one body with different seekers.

08:39In this case we have laser guidance and GLONASS GPS guidance.

08:45There is a larger version, the KAB-500, that doesn't fit into the base,

08:51but it can be transported on the external stations.

08:55And this reminds me to say that the Su-57 has been integrated

09:01with most of the weapons available in the Russian arsenal.

09:06Obviously no weapon is of any use if the aircraft doesn't have the sensors

09:13required to acquire the target and calculate the firing solution.

09:16And if you want to know more about how the Su-57 does this,

09:20please click on the video that is going to appear beside me.

09:23Thank you very much for watching and see you there!

The Su-57 Shares ONE Thing with the Raptor - Round Pegs in Square Holes - Part 6

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