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Su-30MK Beats F-15C 'Every Time'
Aviation Week & Space Technology | May 24, 2002 | David A. Fulghum and Douglas Barrie

Posted on 05/24/2002 11:33:06 AM PDT by The Big Dog

The Russian-built Sukhoi Su-30MK, the high-performance fighter being exported to India and China, consistently beat the F-15C in classified simulations, say U.S. Air Force and aerospace industry officials.

In certain circumstances, the Su-30 can use its maneuverability, enhanced by thrust-vectoring nozzles, and speed to fool the F-15's radar, fire two missiles and escape before the U.S. fighter can adequately respond. This is according to Air Force officials who have seen the results of extensive studies of multi-aircraft engagements conducted in a complex of 360-deg. simulation domes at Boeing's St. Louis facilities.

"The Su-30 tactic and the success of its escape maneuver permit the second, close-in shot, in case the BVR [beyond-visual-range] shot missed," an Air Force official said. Air Force analysts believe U.S. electronic warfare techniques are adequate to spoof the missile's radar. "That [second shot] is what causes concern to the F-15 community," he said. "Now, the Su-30 pilot is assured two shots plus an effective escape, which greatly increases the total engagement [kill percentage]."

The scenario in which the Su-30 "always" beats the F-15 involves the Sukhoi taking a shot with a BVR missile (like the AA-12 Adder) and then "turning into the clutter notch of the F-15's radar," the Air Force official said. Getting into the clutter notch where the Doppler radar is ineffective involves making a descending, right-angle turn to drop below the approaching F-15 while reducing the Su-30's relative forward speed close to zero. This is a 20-year-old air combat tactic, but the Russian fighter's maneuverability, ability to dump speed quickly and then rapidly regain acceleration allow it to execute the tactic with great effectiveness, observers said.

If the maneuver is flown correctly, the Su-30 is invisible to the F-15's Doppler radar--which depends on movement of its targets--until the U.S. fighter gets to within range of the AA-11 Archer infrared missile. The AA-11 has a high-off-boresight capability and is used in combination with a helmet-mounted sight and a modern high-speed processor that rapidly spits out the target solution.

Positioned below the F-15, the Su-30 then uses its passive infrared sensor to frame the U.S. fighter against the sky with no background clutter. The Russian fighter then takes its second shot, this time with the IR missile, and accelerates out of danger.

"It works in the simulator every time," the Air Force official said. However, he did point out that U.S. pilots are flying both aircraft in the tests. Few countries maintain a pilot corps with the air-to-air combat skills needed to fly these scenarios, said an aerospace industry official involved in stealth fighter programs.

Those skeptical of the experiments say they're being used to justify the new Aim-9X high-off-boresight, short-range missile and its helmet-mounted cuing system, the F-22 as an air-superiority fighter and, possibly, the development of a new long-range air-to-air missile that could match the F-22 radar's ability to find targets at around 120 mi. They contend that the Su-30MK can only get its BVR missile shot off first against a large radar target like the F-15. While it's true that the Su-30 MK would not succeed against the stealthy F-22 or F-35, neither would it regularly beat the nonstealthy (but relatively small radar cross section) F-16 or F/A-18E/F, they said. These analysts don't deny the F-22's value as an air-to-air fighter, but say the aircraft's actual operational value will be greatest in the penetrating strike, air defense suppression and electronic jamming roles.

At the same time, there may be more to the simulations than justifying new weaponry, say European analysts. Also at play are some tactical wrinkles being developed for the more effective use of new Russian missile versions.

The combination of Su-30 and R-27ER/ET (NATO designation AA- 10), flown and fought in a competent fashion, also represents a significant threat. Even though the R-27ER is only a semiactive radar- guided missile, the extra maneuvering capability resulting from the large motor is a significant improvement over the basic R-27. Basic Russian air force doctrine has long suggested following a semi-active missile launch immediately with an IR missile launch, such as the R- 27ET. Theory has it that the target aircraft's crew will be occupied spoofing the inbound radar missile, only to fall to the second missile.

The R-27ER, while only semiactive, also outperforms the baseline R- 77 ( AA-12) in terms of kinematics. The R-77 motor has a simple, and short, burn profile, which has resulted in disappointing performance, piquing the Russian air force's interest in developing the K-77M rather than fielding the basic AA-12 in any numbers. The K- 77M (K denotes a missile still in development, while R reflects an inventory weapon) is an upgraded R-77 with improvements that include a larger motor with a burn sequence profiled to increase range.

The oft-touted, but yet-to-be-fielded, R-27EA active variant of the AA-10 could further enhance the Su-30's capabilities, were an export customer to buy the derivative. In terms of one-on-one combat, the second-generation Flanker family presents a considerable threat to aircraft not designed from the outset as low observable, unless they are capable of extended-range BVR missile engagements. For instance, this threat drove the British selection of a rocket-ramjet missile to equip the Eurofighter.


TOPICS: Foreign Affairs; Technical
KEYWORDS: f15; miltech; su30; usaf
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To: belmont_mark
That scenario only hunts if the Chicoms decide that the Taiwanese cockroaches are good loyal party members.
61 posted on 05/24/2002 2:37:03 PM PDT by Poohbah
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To: No Truce With Kings
great analogy.
62 posted on 05/24/2002 2:37:51 PM PDT by strider44
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To: The Big Dog

Click on picture for additional info from CombatAircraft.com

63 posted on 05/24/2002 2:38:08 PM PDT by AgentEcho
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To: No Truce With Kings
Outstanding analysis.
64 posted on 05/24/2002 2:38:43 PM PDT by Poohbah
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To: AgentEcho
I have GOT to get me one of these!

After seeing that plane, who would want a Cessna?

65 posted on 05/24/2002 2:39:34 PM PDT by hchutch
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To: Poohbah
You must be quite happy, last time you were whining that our opponents didn't have the information they needed to buy a plane that can defeat our best. Now it's in the open. Better?
66 posted on 05/24/2002 2:44:27 PM PDT by null and void
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To: hchutch
well, at least they're trying to kill the Paladin. Even and Army guy like me knows that's a waste of money. They should pump that money into a few more Sea Wolfs. While there at it, they should kill the Osprey too. There's no reason the Marines shouldn't be flying Blackhawks. For now, I hope they keep our SF budget up there. More Green Berets, Rangers, and SEALS. As long as they keep up the current high standard of course. The rangers are already slacking a bit. Kill a few recruits during land-nav in the swamp and everything goes to hell. While tragic, it is the unfortunate outcome of training high-skilled warriors
67 posted on 05/24/2002 2:44:58 PM PDT by strider44
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To: hchutch
Hey, you can always rent a ride in one. That's pretty much the only way the Russian AF can get any cash these days.
68 posted on 05/24/2002 2:48:36 PM PDT by strider44
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To: hchutch
After seeing that plane, who would want a Cessna?

Maybe someone comparing the relative damage to the credit card from fueling the two different aircraft. . .

69 posted on 05/24/2002 2:51:59 PM PDT by No Truce With Kings
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To: strider44
I was thinking of getting one of my own, so I don't have to rent. ;)
70 posted on 05/24/2002 2:52:17 PM PDT by hchutch
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To: ReveBM
Provided we are not fighting Su-30MKs driven by Russian top guns, I think the F-15 still has a lot of shelf life left.

The whole point is we NEVER FIGHT A FAIR FIGHT. We always want clear superiority at all levels every time.

This discourages any (non-suicidal) opponant and saves live on both sides.

For those not discourgaged, they should be given every opportunity to die for their pig-god or pig-country, without being given any reasonable expectation that they can take so much as one of ours with them.

Or would you be happier with what, scores? hundreds? thousands of OUR soldiers coming home in body bags?

71 posted on 05/24/2002 2:55:25 PM PDT by null and void
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To: Leto
Maybe we should just buy the manfacturing rights to the Su-30 and installour superior avionics. :-)

Works for me!

72 posted on 05/24/2002 2:58:19 PM PDT by null and void
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To: Poohbah
The British moved a huge amount of troops at Dunkirk with civilian boats from row boat on up...
73 posted on 05/24/2002 3:03:45 PM PDT by null and void
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To: Straight Vermonter
I think India's Su-30's have the N-011M radar. It's more advanced than any radar of any fighter currently in service in the world, but inferior to the APG-77 radar which the F-22 will have.
74 posted on 05/24/2002 3:16:58 PM PDT by The Big Dog
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To: Tennessee_Bob; Redbloodedamerican
pang
75 posted on 05/24/2002 3:18:12 PM PDT by Texaggie79
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To: null and void
The British moved a huge amount of troops at Dunkirk with civilian boats from row boat on up...

There's a big difference in EVACUATING a place you already own, carrying only men with no weapons, ammo, or supplies, and LANDING an organized attacking force.

76 posted on 05/24/2002 3:26:42 PM PDT by John H K
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To: John H K
The Chinese used to overwhelm machine gun nests by shear force of numbers. Didn't seem to much matter whether they even had weapons to carry.

Korea, remember? it was in all the papers...

77 posted on 05/24/2002 3:30:31 PM PDT by null and void
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To: null and void
Across a much shorter distance.
78 posted on 05/24/2002 3:39:22 PM PDT by Poohbah
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To: The Big Dog
"... The Russian fighter then takes its second shot, this time with the IR missile, and accelerates out of danger.

"It works in the simulator every time," the Air Force official said."

I can fly the Concorde under the Golden Gate Bridge every single time in MS Flight Simulator 2001.

79 posted on 05/24/2002 3:47:52 PM PDT by The KG9 Kid
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To: null and void
Friendly hint: know what you're talking about.

My complaint was that the overall nature of the tests was suspect, because of the USAF's penchant for lying through their teeth to save their pet procurement programs (remember the Bomber and Missile Gaps).

This article merely proves that my suspicions were justified: the gist is tht if an enemy pilot is able to maneuver his aircraft just so in relation to the F-15C, then he can always win. What the article doesn't point out is that in order for this trick to work, the F-15C driver has to play according to the script. If he doesn't, then the Su-30MK driver will make his big move, and NOT be invisible when he needs to be.

80 posted on 05/24/2002 3:51:03 PM PDT by Poohbah
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