Let's take a closer look at exactly what we are talking about.
Penetration strikes may have a couple of mission objectives.
- Getting to the target is the prime issue. Engagement along the way of forces should be avoided.
- Surprise may be critical. If you come in all ‘guns a-blazing’, you will alert the forces in the target area and increase the chance of a mission failure.
- Steel on target. Depending on the target, large warheads or penetrators may be required.
- Threat zones are cone-shaped. A particular SAM and AAA site affects a cone-shaped zone with the smallest area near the ground and a larger area the higher you go (up to the max of the AAA or SAM).
Sure.
Let’s look how the F-22 achieves the above.
- The F-22 does have a higher top-end speed than the F-35, but this is not necessarily a good thing. It is important if the target is time-sensitive. But, it severely limits the range of the F-22 and super-cruising announces it’s presences with a sonic boom. In either case, the F-35 will have longer legs. This is amplified if the target is not near a F-22 base and can be prosecuted using the F-35C from a carrier.
A few points here.
- A sonic boom is useless as an early warning indicator or targeting device. In any case if the F-35 goes supersonic it will betray itself in the same manner. This is the 21st century.
- Everyone assumes that because you have a true supercruise capability, you have to either use it for the majority of the mission or not at all. The F-22A can use supercruise in the same manner as other platforms use supersonic sprint, but at a fraction of the fuel cost.
- The range issue is wholly subjective. Due to the F-22A's smaller RCS and ability to supercruise, it can gen get much closer to threat systems, and thus fly a straighter path to the target. The F-35A on the other hand will have to take a windier path, negating the range advantage. Anyway in real terms range only really determines reliance on AAR, not ability to put weapons on target.
- The only sensor the F-22 can use at night is the added SAR modes of it’s radar. Going active with it’s SAR radar is detrimental to it’s survival if it is trying to achieve surprise (#2 above).
The F-35, OTOH, has EOTS and DAS, combined with the HMD, gives it SUPERB Situational Awareness (SA) in both the ingress and egress routes. It achieves this while never going active. When it does go active with SAR, it has better modes than the F-22 where SAR is concerned.
When engaged by AAA or SAMs along the way, the F-35s better SA gives it a better chance of survival.
In addition to SA, the F-35 has better 2-way communications capability than the F-22.
I think your doing two things here, fundamentally misunderstanding the nature of SAR scans, and then making a significant leap of logic based on that misunderstanding.
- When a platform makes an SAR scan it generates a very narrow EM beam for ~2 seconds. What that means is the only thing that will detect the active SAR is the unit being painted, and they only have a couple of seconds to do it. Thus the (lets say) SAM battery may detect a fleeting EM source, which it can not detect or track on radar, and in a matter of seconds to minuets a weapon will impact. Assuming the SAM battery has very capable ESM. Thus in real terms the F-22A betrays nothing by using SAR, except giving the crew the option to abandon their posts and run.
- The F-35A's EOTS will only work if weather permits it, if there is mid or low cloud cover (which there is over large tracts of the earth at any one time) which the F-35A will have to get under in order to use EOTS to target the threat. By doing that the F-35 will have to get very close to the threat system, while remaining in line of sight. That, given the platforms RCS would likely put the platform within the detection and tract radii of the threat. That means the SAM will likely be able to detect, track and engage the F-35 while its attempting passively engage the SAM, not good and realistically not gonna happen. Thus in real terms the F-35A driver will use SAR whenever the weather does not permit EOTS from high altitude.
- EO DAS is actually a development of the F-22A's MAWS, it just provides the ability to project IIR imagery to the pilot and target A2A missiles. Therefore in this scenario, dealing with GBAD threats, EO DAS will only provide a slight improvement over the MAWS. IF the GBAD system itself is close enough for the EO DAS to see they your in trouble, and if there is a missile launch the only difference is the pilot will be able to see an IIR image of it (the MAWS will still provide a threat bearing). The HMD is planed to be integrated on the F-22A in time. The only real difference in 2020 SA will be the EOTS, which will not provide any real additional benefits over SAR when targeting J series weapons.
- better two way comms are not really relevant in this scenario, as any asset penetrating a IADS will have stringent EMCON procedures in place. Thus this is a moot point.
Using SAR will not betray your position in any meaningful way.
- Warload. This is possibly the one area where the F-35 completely outshines the F-22. The maximum that the F-22 can carry is a 1000lb JDAM, it’s not even a penetrators at that. While it can carry SDBs, they have a limited value against larger targets, targets with multiple rooms, or targets under multiple layers. IIRC, the SDB does not have a void sensing fuse.
The F-35, OTOH, carries a dedicated 2000 lb penetrator weapon (the BLU-109B based GBU-31). It has a void-sensing fuse that can detonate after penetrating a certain number of per-determined layers. It will cause a much larger amount of damage due to it’s 525+ lbs of explosive vs the SDB’s 50lbs. Even if the GBU-31 does not fully penetrate, the large warhead will have a greater chance of still causing a great amount of damage to the structure and it’s contents.
I stated this earlier. However the 1000lb JDAM is capable enough for the majority of strategic HVT's, its only the hardened stuff that you need a 2000lb+ weapon, which is B2's breakfast anyway. Have you seen a 1000lb detonation? Its enough to level any unhardened building and then some.
SBD has a delayed fuse for penetrating.
Anyway i think you're starting to miss the point here. I never claimed the F-22A was a better or more capable strike platform, just that in a certain set of circumstances the F-22A will be a better choice for the target and threat environment than the F-35. If you have a handed, well defended HVT to hit and the F-22A cant do it, thats what the B-2's are for. All these platforms are complementary.
The other area in which the F-35’s warload is superior is LGBs. The F-22 just can’t do it. With some future upgrade, sure… but right now it can’t. When absolute accuracy is needed, nothing beats a LGB.
"With some future upgrade"? So your comparing the F-22A of today and the F-35A of 2015~2020 (i.e. the F-35A only exists as a test program)? Not a very apt comparison is it?
AFAIK there is space and weight allocated for the integration of sniper for internal carriage on the F-22A, thus making EOTS a moot point.
J series still give ~3m accuracy, thus for the
vast majority of targets providing ~1m accuracy is a moot point, because ~3m is plenty. The only real advantage LGB's hold over J series weapons is the ability to engage moving targets, which SDB II will provide the F-22A with anyway.
All this being said, the question remains that if I had to pick one fighter to name as the “Best Penetrator”, I have to go with the F-35. I am not saying that the F-35 will outperform the F-22 in every scenario, just most of them......When it arrives at the target, it can prosecute the target with a greater variety, and more powerful, selection of weapons than the F-22.
Then you actually agree with me (perhaps you should have examined what i was saying before replying), in some scenarios when you are facing ultra high end IADS, with extremely capable GBAD around the target, and 1000lb weapon will suffice, the F-22A will bore more survivable and more likely to succeed due to its significantly smaller RCS and kinematic performance. In a whole range of other scenario's an F-35A or B-2 would be the superior choice.
By the way you don't go to a target with a "variety" of weapons, you make a decision on platform and weapon combination in order to produce the appropriate effects on a specific target.
It’s RCS is small enough (B-2 class) and it’s SA good enough that it can pick and choose it’s ingress and egress routes with virtual impunity. When surprise GBAD assets popup, it has a better chance of detecting them and dealing with those assets than the F-22.
With the addition of a HMD to the F-22A i don't see the difference in SA being that much, especially when dealing with GBAD. The only major difference is EOTS and IIR imagery generated by EO DAS. IMO none of this outweighs the kinematic performance the F-22A enjoys, i.e. even if a threat engages the F-22A, the missile will have a very hard time maintaining the intercept track. Additionally the threat EM source will have to be much closer to the F-22A to detect or track it than the F-35A. These are elements the F-35A can not make up ground on (unless you fundamentally re design the platform).