It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Thank you.
Some features of ATS will be disabled while you continue to use an ad-blocker.
Originally posted by kilcoo316
The YF-23 was never flown above 25 deg AoA.
At high alpha units, compressorbility flow over the Vertical Stabs on the YF-22 only passed the upper 20%, completely over the rudder, whereas on the YF-23, the entire tailboom assemblies moved covering that problem at high alpha, vectored nozzles were not really necessary. I do believe superior flight control surfaces could override the absence of vectored thrust on the YF-23. Lets continue this while I research some more.
allenperos
www.f-16.net...
Well, perhaps Ricconi could do with looking at the laws of physics.
For two equivalent machines, bigger wingspan invariably leads to slower roll responses and rates. I've see the graphs, the F-22 is some way ahead of the F-15, but behind the F-16 in roll performance.
But they aren't in service are they?
The F-22 is a substantial step over the F-15C!
Originally posted by StellarX
Can it beat 200deg/sec? (@ 0deg AoA)
Can it beat 100 deg/sec (@ 20deg AoA - which is more than double F-15)
Can it beat 70 deg/sec (@ 30deg AoA)
The first maybe, the last two not a chance.
At M1.5, the YF-22 responded like an F-15 at M0.8
Yes, the YF-23 has lower signatures in both radar and IR - but what I'm saying is the YF-23 is the equivalent of a stealthy F-15.
The YF-22 was a kinematic step above the F-15 as well as having lower signatures (but not as low as the YF-23).
Why compare the thrust vectoring aircraft to one isn't then claiming the far more expensive one to represent some kind of miraculous engineering breakthrough?
How can it be argued that LPI radar technology is somehow unique to the F-22?
In practice, yes, and i should have said the F-22 flight characteristics would not have been massively superior to a evolutionary design of a F-15 active type plane by virtue of the very same physics that allows the very capable P&W F119's to give it a thrust to weight advantage and super cruise with the addition of the larger fuel stores in a bigger aircraft.
It is simply HILARIOUS that aircraft are built to reduce 'casualties' amongst pilots when the next world war could lead to the potential death of tens if not hundreds of millions of Americans. No one besides pilots cares if a few pilots die in a air war as compared to their colleagues on the ground they will still having a much better time of it.
Basically that means that the F-22 is a souped up F-15 with a massive thrust advantage and thrust vectoring with the YF-23 being the closest to a engineering marvel of the three aircraft.
Originally posted by StellarX
According to this , and other sources, the YF-23 were capable of achieving very nearly the same AOA as the F-22 WITHOUT thrust vectoring. Since i am no engineer ( and this guy claims to be) you migth be better able to judge it's accuracy.
Originally posted by StellarX
Which is entirely a function of it's vectored thrust, right?
Originally posted by StellarX
Neither were the F-22 until a few years ago. I fail to understand why you wish to make the distinction when the F-15 active could have been in service ages ago without the additional expenditure of tens of billions of dollars?
The F-22 is far and away the most manouverable aircraft in service right now.
Originally posted by StellarX
In practice, yes, and i should have said the F-22 flight characteristics would not have been massively superior to a evolutionary design of a F-15 active type plane by virtue of the very same physics that allows the very capable P&W F119's to give it a thrust to weight advantage and super cruise with the addition of the larger fuel stores in a bigger aircraft. The F-22 is a substantial step over the F-15C by virtue of it having the 'upgrades' and technologies that were never implemented on the basic F-15 airframe.
Originally posted by StellarX
Again, presuming it's all accurate and 'impossible to copy in the YF-23, this is not because the F-22 is built from alien metals but due to the very mundane fact that it has very powerful engines ( Each with twice the dry thrust of the standard F-15C P&W ) giving it twice the thrust while only being around 30% heavier with 'standard' load out. Fact is the F-22's empty weight is only two tons more than the F-15C's thus giving it a rather large advantage in a engagement where it has burnt half it's rather larger fuel stores. As Riccioni attempts to explain this is a matter of physics rather than engineering prowess to the tune of thirty billion dollars.
Originally posted by StellarX
The YF -23 is admitted to being very nearly as maneuverable as the F-22 without the usage of any thrust vectoring technology.
Originally posted by StellarX
Basically that means that the F-22 is a souped up F-15 with a massive thrust advantage and thrust vectoring with the YF-23 being the closest to a engineering marvel of the three aircraft.
Originally posted by C0bzz
Pogo report was rather outdated / since mostly proven wrong.
Everest E. Riccioni
Col. USAF, Ret.
Revised August 10, 2000
www.pogo.org...
Perhaps they bought the expensive F-22 because it's cheaper yet more capable than 62 billion dollars worth of updated F-15s?
Operating costs are lower, logistics costs are lower, training costs are lower, less people in harms way... et cetera...
The tactics I've seen devised to conquer the F-22 are, 4 vs 1, with updated Flankers. No such force even comes close to that.
The F-22 does however, act as force multiplyer for existing aircraft / can suppress double digit SAMS.
No F-15 could even match this capability, unless of course, you want to sacrifice hundreds of millions of dollars of equipment, countless lives, --- NOT acceptable in this day and age.
Even if we took that path, and even if there was an enemy that great, I see no reason they couldn't make that many SAMS? F-15 has a huuuge RCS, why have LPI when they can datalink / SAM you?
TVC is primarily used for airshow tricks, impressive supersonic pitch rates, low supersonic trim drag... I'd like to see a F-15 go supersonic with stores + dry thrust... not even the -229 can it do that.
What I'm trying to get at is all these upgrades are likely to dramatically increase cost without adding capability - removing them we eventually we get back to the stock standard F-15 which we have now.... in massive numbers..... which increases long-term cost.... while enemies find a way to defeat the outdated aircraft....
Why not have F-22 / F-35 which can realistically dominate all threats, while being cheaper, with less logistics, with less support, while putting less people in harms way?
This is one of the prime reasons we JUMP generation rather than continually update old aircraft.
Imagine what would of happened in Korea if we brought massive numbers of Reno Air Racing P-51s.... or the first Gulf War with.... 5000 Super Sabres with canards, TVC, AMRAAM, AESA..... Even if we won, I'm sure people would be ranting on about how outdated our aircraft were.
Btw, sorry for the 500 edits I did.
Originally posted by C0bzz
TVC on the F-22 is not asymmetric. Pitch only - it doesn't help roll. Like I said TVC on the F-22 is primarily for low supersonic trim drag & high pitch rates. F-15, clean, with F100-PW-229, dry, have trouble getting supersonic -
so minus low speed handling (whose usefulness is debatable), TVC is useless.
TVC? Waste of time on F-15.
'Cause LPI to the extent the F-22 takes it requires AESA -, which is still maturing now. You're unlikely to get the LPI capability anywhere close to the F-22 until relatively recently.
If you put AESA on unstealthy airframe then there's no reason a new airforce could not datalink you... might as well go PESA instead... cheaper.
You're going to need far more fuel - then you've got a practically whole new aircraft much like the Super Hornet - not exactly cheap. Isn't a F-22 without VLO pretty much exactly what you're proposing?
To run a war, you're firstly going to need public support.
You're not going to get support when your brand new fighter jets get shot down in a 3rd world nation.
The F-22 needs less airlift support than the current F-15C - if you're deploying large amounts of Super Eagles you need additional airlift capability, something we do not presently have - they're already stretched thin.
You're also going to need dramatically more tanker support. New C-17s & KC-30 are what? 150 million each? Price is ballooning.
Between 1993 and 2003, the amount of KC-135 depot maintenance work doubled, and the overhaul cost per aircraft tripled.[12] In 1996 it cost $8,400 per flight hour for the KC-135, and in 2002 this had grown to $11,000. The Air Force’s 15-year cost estimates project further significant growth through fiscal year 2017. For example, operations and support costs for the KC-135 fleet are estimated to grow from about $2.2 billion in fiscal year 2003 to $5.1 billion (2003 dollars) in fiscal year 2017, an increase of $2.9 billion, or over 130 percent, which represents an annual growth rate of about 6.2 percent.[13]
The USAF has decided to replace the KC-135 fleet. However, since there are over 500 KC-135 these planes will be replaced gradually, with the first batch of about 100 aircraft to be replaced in the current buy. The effort to replace the KC-135 has been marked by intense controversy.
Initially the first batch of replacement planes was to be an air tanker version of the Boeing 767, leased from Boeing. In 2003, this was changed to contract where the Air Force would purchase 80 KC-767 aircraft and lease 20 more.[14] In December 2003, the Pentagon froze the contract and in January 2006, the KC-767 contract was canceled. This followed public revelations of corruption in how the contract was awarded, as well as controversy regarding the original leasing rather than outright purchase agreement. This was also designed to be a cost-cutting measure and is part of a larger reorganization and redefinition of the Air Force's mission that includes the retirement of the E-4B fleet, the cancellation of the Boeing 767-based E-10 MC2A program, as well as the elimination of all but 58 B-52 Stratofortresses. Former Secretary of Defense Rumsfeld stated that this move will in no way impair the Air Force's ability to deliver the mission of the KC-767, which will be accomplished by continuing upgrades to the KC-135 and KC-10 Extender fleet.
en.wikipedia.org...
I also think it's safe to say that if hundreds of millions of Americans are dead, there is going to be NO logistical support or much of an airforce left.
And with the F-35, F-22 you're likely to obliterate any countries Air Force that presently exists today & in near future. All the Russians have is Mig-29SMT / Su-27SM. India? MKI, Mig-35 & Mig-27. China? J-10, J-11, F-17, Flankers. Is that enough of a 'threat' to buy substantially more aircraft & logistics despite the current plan will outclass them all? I sure don't think so.
Wouldn't the F-23 be a souped up F-15 with a massive thrust advantage, slightly better RF stealth (compared with F-22), & significant IR stealth? I always thought the F-23 was rejected because it was more risky of the two and needed a more costly redesign. I've heard it carried less fuel, less weapons & the compressor blades could be exposed from certain angles...
Originally posted by kilcoo316
Sorry, but that is simply incorrect.
The F-22 can retain complete controllability at sustained AoAs of 60 degrees and higher.
When your at stupidly high AoA - you've little in the way of useable airflow, and need the leverage provided by TVC - even if only to trim the aircraft and allow your control surfaces to move themselves into an optimal neutral position to provide control authority for when the pilot requests manouvres.
The two YF-23As that were built were more like bare-bones demonstrators than true prototypes. In order to save money, the main landing gear members were modified F-18 components and the nose gear was from an F-15. The cockpit was from an F-15, and big-screen monitors were not fitted. Northrop had not redesigned the aft end of the aircraft when the USAF dropped the thrust-reversal requirement, and the rear fuselage of the prototypes was broader and deeper than that planned for production machines. The prototypes did not have any radar, nor did it have any of the complex electronics that would have been required on a production aircraft. Northrop/McDonnell Douglas did built a complete prototype avionics system which was test flown in Westinghouse's BAC-111. Northrop did not plan to do high-angle of attack maneuvers with the prototype, nor did it intend to fire any missiles. However, wind tunnel tests at NASA Langley showed that the aircraft could perform tail slides and had no angle of attack limits and could self-recover from any spin except in those situations when the weapons doors were open.
home.att.net...
The only other aircraft to have similar levels of controllability all have TVC - MiG-35, X-31, F-16 MATV or F-15 ACTIVE to name a few.
No, not for roll... well not directly anyway. The F-22 and F-15's engines are too close to be used for roll coupling (unlike say, the Su-30 MKI)
But the TVC will be used to trim the aircraft longitudinally so the elevators and ailerons can be used in conjunction to provide maximum possible roll moment. However, that doesn't begin to happen until higher Mach numbers, where the F-22 already has a substantial lead over the F-15.
have already pointed out things like roll control where the F-22 is ahead of the F-15 which is not directly influenced by TVC.
So the bigger airframe can outmanouvre, out gun and out last the smaller one...
And you insist it is not because it is simply better?
See that in bold.
Along with internal stores and improved aerodynamics - thats the engineering prowess that gets you those advantages.
If fighter aircraft were all about engine power, then the Foxbat is the best thing ever.
Where it was tested... in the lower end of the flight envelope - where TVC is not so much an issue.
The YF-22 got through a much more complete Dem/Val program than the YF-23.
Quantitative data on the YF-23 is very hard to find, only qualitative statements.
You keep believing that. Your very wrong.
Not new and in my reading still quite accurate?
Isn't the question rather 'capable of what'? I mean what would 180 F-22's do better than 1000 - 2000 F-15's with LPI's, thrust vectoring , very modern engines and generally updated avionics and electronics? Which air force would they 'dominate' more with 180 F-22's than with a additional one thousand thrust vectoring F-15's and 100 odd extra tankers to offset their slightly smaller legs?
Operating costs are projected to be lower ( by virtue of smaller footprints or what do you mean?) in the same way that maintenance is projected to be lower due to having learnt from past experience. I don't see why newly manufactured F-15 actives or the like need to be greatly more maintenance intensive per plane than a F-22 or why the very inefficient USAF aircrews ( compared to many NATO allies) can not be trained to the standards in other air forces.
Enhanced Mobility
• 73% Less Logistics Footprint (Volume)
• 43% Fewer Pallets for
30-Day Deployment
• 47% Less Logistics Footprint (Weight)
norway.usembassy.gov...
As for less people in harms way no one gives a rat's ass about a few hundred pilots when a cold war ground war would have involved tens or hundreds of thousands of casualties per day.
Well the Russians do have enough flankers and Foxhounds to match the F-22 4 to 1. My point is simply that the USAF could have matched those flankers at four to one rates with F-15 active type airframes.
As for the claim of 'beating' double digit Sam no one has so far flown combat missions against them so i will presume that the speculation related to 'beating them' will be as accurate as the USAF speculation in general.
It does act as a force multiplier in even it's small numbers and what i am suggesting is that it could or would have multiplied it even more if the money were spent elsewhere.
No F-15 in service can but it could have been different if the F-15 were developed along the same lines as the Su-27. War is in the end all about 'sacrifice' ( what else would you call Vietnam and Korea and even much of the USAF effort in world war two) and attrition and wars of attrition is clearly not something the F-22 were built for.
If you want to talk about saving lives you could have taken a F-22 ( current price + development = 340 odd million USD) and instead deployed 50 Abrams tanks with about a hundred million dollars left to keep them serviced and deployed for a good many years. Lets not fool around and suggest that the best way to protect lives is to build horrendously expensive aircraft.
The LPI is to reduce your own signature when engaging enemy aircraft as per AWACS direction.
What's worse is that they have their own LPI engagement radars as well as passive and active search radars and can set up or pack up and be gone in five minutes
These things are not too be trifled with and especially not when they are supported by far cheaper Sam systems that are mobile enough to literally paint the sky and engage targets while moving. It makes sense to not want to fight these things head on but when your countermeasure system starts to cost the same as a navy destroyer you have to know that your risking a a whole boat load of stuff in your attempt at a stealthy approach.
The SAR map of a school showed the fence and light posts around a baseball field, along with baselines and the pitcher’s mound.
At Aberdeen, the targets could be seen at up to 80 mi. Within a lineup of eight armored vehicles, a radar SAR map picked out the 155-mm. and 8-in. howitzer barrels with ease. The radar monitored an average of 25-30 aircraft in the area while it was building the map.
After landing, officials provided some details of the F-35’s radar.
The APG-81 on the flying testbed weighs less than 500 lb., it has a mean time between failures of more than 700 hr. (including the processors), and it has a mean time between critical failures of 1,200 hr. (which means the aircraft can’t complete the mission).
“The aperture itself has an MTBF that’s double the flight life of the aircraft,” says Teri Marconi, Northrop Grumman’s vice president of combat avionics systems. “The aperture won’t have to be opened during the lifetime of the airframe.” Company officials predict a 98.7% fault detection accuracy with 0.5 hr. mean time to repair.
The radar has a 129.7-mi. view radius on the BAC 1-11 and by next summer will have a 16 times increase in SAR map size.
integrator.hanscom.af.mil...
It makes sense to not want to fight these things head on but when your countermeasure system starts to cost the same as a navy destroyer you have to know that your risking a a whole boat load of stuff in your attempt at a stealthy approach.
Id like to see what a the F-15 airframe can do with P &W's that can give twice the thrust coupled with thrust vectoring. Either way going supersonic, and certainly staying that way, is a largely a function of the fuel fraction and thus not something even a F-15 with the -229 is going to do often . Since i am not familiar with the dimensions of the F119 i will just take a guess and presume that you could equip F-15's with them without breaking the bank to the tune of many billions of dollars provided a new production run of F-15's.
It might indeed be possible, but in a tactical fighter aircraft changing the engines is not a simple thing. A couple of different engines were proposed in some of those options. The one out of the F22, to my understanding, is not directly compatible with the F111 because of the way it mounts things like generators and hydraulic units and so on. That would essentially require a substantial redesign of the air frame-engine combination, and I think that is a very big deal. There are other engines, such as the GEF101, which probably offer some greater compatibility. For example, the GEF101 is the current engine being delivered in the F15 and F16. It was designed as a replacement for the TF30, so it is possible to use it.
www.aph.gov.au...
I don't see why many of these systems can not be integrated with modern miniaturization methods at a fraction of the cost inherent in a totally new airframe containing exotic materials and the like.
What you say have certainly been the case for the F-16 as so many of these additions are introduced that the plane can't go anywhere carrying much anything thus keeping it from playing the role it could be virtue of desperately trying to keep attrition rates artificially low. If you have no public support or legal mandate this makes a great deal of sense but to presume that the third world war will be won by those who are trying hardest not to lose men and systems is in my opinion ludicrous.
Every war is 'high tech' in the respect that one side tries to deploy 'better' equipment to enhance it's capabilities and as before it wont be any guarantee of success.
Where? When?
That's not fair! The USAF could have easily deployed twenty thousand Super Sabre's in the gulf. Did the USAF leave Europe when Me-262's took to the skies or did the simply build and deploy more Mustangs? Yup.... With reference to the 'outdated' aircraft the idea is to win the wars you are forced to fight ( unlike, Korea, Vietnam, Yugoslavia, Iraq and so forth) and to win them no matter how 'uncool' you look doing it.
I don't understand( maybe because i'm simply ignorant so feel free to explain it in more detail) how that can be the case when a slightly adjusted and striped down eagle set so many to altitude records at the time? Who said anything about dry thrust any ways when the F-22 can according to it's builders only do about 1/4 out of a 800 odd km , admittedly suspiciously short, combat range at supersonic speeds? You don't think the F-15 can do that with the more efficient -229's?
Pratt Whitney F100-PW-229 F-15E/I/S, F-16C/D DRY: 17,800 WET: 29,100 DRY SFC 0.726 WET SFC 2.060
www.jet-engine.net...
That saves us a lot of gas and opens up a whole host of things when you start talking about dropping bombs. You can imagine if you are 60,000 feet doing mach 1.9 (about 1,400 mph) and these bombs are flying out of your airplane, the swath of hell you can produce going through a country saying "I'll take that target, and that target."
aimpoints.hq.af.mil...
The F119 engine develops more than twice the thrust of current engines under supersonic conditions and more thrust without afterburner than conventional engines with afterburner.
The process, called afterburner, gives the aircraft a rocket-like boost as the fuel ignites in the exhaust chamber. The tradeoff is higher fuel consumption, a greater amount of heat and consequently, greater visibility to the enemy.
www.globalsecurity.org...
Level acceleration in military power or less is sprightly at all altitudes but downright astounding in full afterburner. I wish I could state some acceleration times, but they remain classified.
...
Accelerating through Mach in military power in the Raptor feels similar to accelerating in full afterburner in an F-15. The Raptor accelerates in full afterburner in one continuous-speed feed. A slight buffet occurs between about Mach 0.97 and 1.08. After that point and to max speed, the aircraft accelerates smoothly and continuously.
...
The best seat in the house for supercruise is from a chase F-16 or F-15. Remember, we fly both these chase jets with just a centerline fuel tank to give them a fighting chance to play with the Raptor. Still, the F-22 usually leaves these aerodynamically “slick” chase airplanes in the dust. The F100-110, -129, and -229-powered F-16s don’t fall very far behind the Raptor in the initial acceleration through Mach. But the race is really no contest at the higher Mach numbers and once on cruise conditions. Nothing can sustain supersonic conditions with the persistence of a Raptor. Load those chase F-16s and F-15s with combat-representative stores and they would not stay with the Raptor during acceleration or sustained cruise.
...
Aerodynamics and overall drag are at a minimum near the design speed of 1.5 Mach at 40,000 feet.
www.codeonemagazine.com...
The F-22 is larger ( weight) by the same margin it's internal fuel capacity is increased so beside for a supposedly far less efficient design , according to you, what is going to make the F-15 such a total clunker with twice the dry thrust and the same fuel fraction?
2 D thrust vectoring is never useless as it allows for trim thus reducing drag.
There have been AESA equipped F-15's for some time now and their development were not dependent on the F-22 program.
The whole point of AESA and similar developments is to reduce the useful information the enemy can gain about by means of your radar emissions. They do not have to be coupled to stealthy aircraft to give large advantages.
The new generation of active, electronically scanned array (AESA) sensors can detect small, distant targets with far more detail than a cockpit display can reproduce. Yet, advanced processing of radar returns can reveal those clues with the clarity needed for instantaneous identification of objects that could otherwise baffle aircrews.
...
“Green squares are target detections, the first contact,” Eide says. “Hit it a couple of times [with the AESA’s radar beam] and it turns orange. You’ll immediately know what it is and where it’s going.” But more importantly, “hovering on [or prolonging the observation of] a target produces specialized, pop-up target parameters” that were absent from the display for this flight. The tactical operator on the aircraft may use the information, but “data pulled off the radar [also] can be integrated with information from other mission system to help with faster, more accurate target recognition, for example.”
While Northrop Grumman officials will not discuss the specialized clues, specialists say they include engine vibrations, infrared signatures, the movement of manual radars inside radomes, identifiable reflections from specific radars and a large range of electronic emissions.
integrator.hanscom.af.mil...
No. I am talking about a evolutionary design of the same F-15C/D models that cost you 30 odd million dollars each in 1998. If you want to double that cost for making the alterations that would allow for -229's and AESA and thrust vectoring that's fine with me.
Since the F-22 isn't VLO you can accuse me of talking about a similar airplane to the F-22, a F-15 basically, sans the tens of billions of dollars spent to make it ' stealthy' in the forward aspect.
If you want to argue that you need to reduce casualties as much as humanly possible to fight aggressive wars for personal against nations that never attacked you , threatened to attack you or have any real known capacity to endanger you then yes, you may need to do all those things to maintain your public support levels at somewhere around 10% presuming you control the media and can intimidate the rest of the world to stay out of it.
You don't get any support for fighting third word nations that never attacked you.
By February 2003, 74% of Americans supported taking military action to remove Saddam Hussein from power
en.wikipedia.org...
You don't need airlift capacity if your defending your own shores from hostile aircraft. Don't burden me or the F-15 with the added demands of imperialist.
Either way tankers can be built for a fraction of that cost if your not trying to stimulate industries to make them more profitable than rival producers overseas. Basically your funding Boeing's 'dreamliner' and 747's production lines by massive 'military' cash infusions. I'm not fooled but i suppose many are.
Tankers are exceedingly cheap as compared to fighter aircraft and they are relatively easily configured for at least partial dual usage for cargo transportation.
You only need dramatically more tanker support if you wish to stage aggressive operations far from home soil or deep in enemy airspace.
And that's where you are utterly wrong. That's the point where you make fighters no matter the human cost and lose them by the hundreds on a weekly basis. The USAF/AAF sustained 90 thousand killed and kept going in the second world war and suffered not insignificant attrition in Korea and Vietnam. To suggest that Americans won't sign up to fight, and die like people all over the world, when their country is actually under attack is just uninformed. Both the Swiss, North Koreans and Russians have shown that you can take your air forces underground and protect yourself very well from all but direct nuclear hits. A nuclear exchange will not prevent a well organized and prepared country from emerging from their bunkers and fighting on having sustained but a small percentage ( 4-5%, estimate for USSR in the 80's) of casualties.
A nuclear exchange will not prevent a well organized and prepared country from emerging from their bunkers and fighting on having sustained but a small percentage ( 4-5%, estimate for USSR in the 80's) of casualties.
That is not my point.
The expenditure on the war in Iraq and on programs such as the JSF and F-22 makes a mockery of claim that this is being done to protect US citizens from 'terror' when that terror is created by disarming Americans at home so that the empire can fight for profit elsewhere.
so it largely came down to politics and projected costs where it was apparently decided that Lockheed had a better record and could deliver on time and on budget.
Its flight envolope is very large, alphas as high as 60 degrees were demonstrated in the YF-22 program, and some roll maneuverabiliy was retained at that extreme pitch angle. At alphas of 15 degrees and above, the F-22 rolls at least twice as fast as the F-15, and the gap widens until the F-15 hits 30 degrees alpha and can no longer roll at all.
The F-22 is able to get around its envolope quickly. Maximum pitch rates, boosted by vectored thrust, are up to twice as fast as the F-16. Infact, the F-22's pitch rate is so fast that is it inhibited by a soft stop.
link here
The F-22 is far and away the most manouverable aircraft in service right now