The code is written in Ada – Ada 95 I believe. The OS, at least for parts of the system, is Green Hills Integrity RTOS. The actual development environment is Green Hills AdaMULTI.
I happen to know this because I’m very familiar with Green Hills products from working in embedded systems. I’ve worked with MULTI for C and assembly for processors like SuperH and ARM. It’s a very nice IDE with integrated support for probes, cpu emulators, and hardware debugging.
Oh and Ada is not really archaic, it’s IMO overly complex but it is in current use in lots of military systems. It’s just very uncommon in the civilian world.
http://www.avions-militaires.net/rafale/radar-rbe2.php
here a RBE-2 PESA antenna with its double layer of sensors mounted at 90 degrees one of the other:
http://www.motorshow.me/photos.aspx?pcode=50037looking at the AESA antenna with the transparent part we see that architecture is the same.
The RBE2 does not have a double layer of sensors.
The RBE2 has a single planar array, which is its emitter and sensor. In front of the array is an array of phase shifters to steer the beam in the vertical axis, then there is a polarizer, then another array of phase shifters to steer the beam in the horizontal axis.

Notice the labeling. “Antenne a faisceau fixe” == antenna with fixed (non steerable) beam. Then the two “lentilles” — lenses — for beam steering, separated by the polarizer.
RBE2 AESA does away with these two layers of phase shifters, as the T/R emitters have the ability to steer their beams in two axes on their own. Presumably the array will not need to be as “deep” so it will have slightly more surface area (as it will be farther back in the radome). But it does not have two layers of emitters, just as the original RBE2 does not.
I guess you can tell this from some of the pixels and from seeing quite a few shops in your time?
That, and because I find it unlikely anyone would install a radar sideways in an aircraft.
I know but do we have something who could tell us that the (V)1 update has better MMics ?
No .
Oh please, even their most sanitized press releases make it obvious that they have:
Designated AN/APG-77(V)1, the radar variant will enable air-to-ground capability provided by a new software suite that is being developed under a separate modernization program. The company has captured advances made in AESA design for the F-35 Joint Strike Fighter and the Block 60 F-16 aircraft and incorporated them back into the APG-77. In addition, the (V)1 is more affordable than the current version, in part because the production line relies on a greater degree of automation.
And if you want to be honest Phaid , you should know that I used the (V)1 radar and not the primary version in my last post .
The primary version only had 1500 modules .
You can check it my friend ๐
I am curious about the physics about your claim: you say the original version has 1500 modules, and the current version has 2000 modules, but they use the same modules? That is fascinating.
Anyway, you’re clearly just making stuff up. If you want your argument to be taken seriously, provide citations to back your claims about the number of modules in the two versions of the APG-77 and what their watts per module is.
The RBE2-AA can compete on equal ground with the APG-80 (at least) and I guess that it is a better platform who only needs a proper use to beat it hands down .
Well, other than the shorter range and lack of modes, yes, hands down. :rolleyes:
The F-22 radar , the AN/APG-77 is using 2000 modules providing 4w each (8000w in total)
http://www.f-22raptor.com/af_radar.phpNow , according to Thalรจs , it seems that the RBE2 is using 838 modules rated in between 10 to 20w each but they don ‘t want to say yet . That would give a total output power of 8380w or 16760w (which is more than the APG-77).
It seems that the correct number is around 10kw , so 20% more than the -77 .
It is not surprising when one look at the calender , column “years” .
That site you linked is talking about the original APG-77 from 1998. Their “4 or more watts” is just a guess anyway, and no public source has any idea how many watts each element of the current APG-77(V)1 can handle.
Maybe when they Thales manages to develop a radar that is competitive with the APG-80 they can start contemplating one that can compete with the APG-77. Someday. ๐
I have been told that it looks like the real thing for two reasons :
– the mounting and the fixating screws are correct and at the right place
– it “feels” right
That pic is obviously Photoshopped. Whatever that array really is, it looks like they rotated it so that the shadow would match the aircraft. Notice the elements are not centered in the array plate, and the mounting screws on one side do not match those on the other.
I remember reading (can’t give source now but is was US military or political) that the benefits accruing from 2 suppliers were estimated to be in the $billions.
If it worked so well before, why not do it again?
Exactly. The benefits are huge and the cost is comparatively trivial. Gates’ justification for canceling the F136 is that it the F-35 development budget can’t afford it. The remaining cost of F136 development is something like $300 million. If the F-35 is that close to the edge, then there’s no reason to continue; that’s a tiny fraction of the total cost overruns the program has incurred so far.
The F-15 and F-16 were the exception rather than the rule. Most military aircraft only have one engine option.
Yes, but that is also part of the reason the F-15 and F-16 have endured so long and sold so well. The original engines made just over 20,000lbs thrust; 30 years later they have evolved to 32,000lbs and much higher reliability, largely due to competition. And it gives customers real options, like when Saudi Arabia recently re-engined all of their Eagles.
And they arrived at their figures using methodologies using previous aircraft acquisitions, rather than what was actually being spent on the F-35. These issues have been addressed here before, (weeks and months ago), so it’s asinine to keep beating that dead horse.
What dead horse? You keep saying the LRIP airframes are declining in cost. And they are, it would be an even bigger mess if they weren’t. But that doesn’t have anything to do with what the production airframes will cost, and it doesn’t have anything to do with the maintenance cost. The simple fact is that JET I/II, the NavAir study, and the GAO have all made cost projections which are not being proved wrong, and the only argument you have boils down to a fact-free denial by the people in charge of the project.
LM and the USAF have disputed the GAO/JET findings though, as not being representative of reality.
Yes, the aircraft manufacturer and the Air Force JSF program managers have disputed the findings. Findings of two joint DoD program commissions, GAO, and NavAir. :rolleyes:
The issue I have is with your failure to distinguish between increased, and ever increasing.
The correct phrase is “ever increasing”. It’s not as if it just increased once. Every GAO report on the subject has shown an increased acquisition and O&M cost for the F-35 compared to the previous one. Every program review (JET etc) has done the same.
Yes the cost of the LRIP aircraft are decreasing as numbers increase, that is to be hoped. Doesn’t change the fact that the flyaway cost of the aircraft is more than was originally estimated, more than the revised estimate from 2005, more than the one from 2007, more than the one from 2009, ad nauseum.
Each LRIP iteration has seen costs come down, and no aircraft have been bought at full rate production prices, so it’s disengenuous to remark about ever increasing prices. I’d love to see the source for increases in operating costs.
Here you go. See pages 8-10.
Oh really? In what way? Would you like to expand on that, explain what you mean?
They are apples and oranges because of the different payloads, different fuel reserve requirements, landing on a CV vs on a runway, etc.
Ignoring speed and payload difference also mentioned. And, as mentioned, comparing the avionics of 2 aircraft of different generations isn’t exactly a straight comparison (esp. when the discussion started out on performance) Clearly, one would rather not have to overfly an enemy airbase to fire runway cratering ammunitions, but if you had to would you rather be in a Tornado than in a Rhino ?
Comparing the avionics of the two is completely relevant. The question is not “which one was a better aircraft for its day”, the question is which one is a better fit for UK requirements today. Given the much better avionics, wider ordnance selection, air to air capability and much lower operating and maintenance cost of the Super Hornet, the answer is clearly not the Tornado, regardless whether the Tornado has a speed advantage in certain profiles.
As far as which is better for that particular mission, as you say I would prefer not to do it at all since it is an obsolete and excessively dangerous way to do runway interdiction. The Super Hornet with its better ECM would likely be more survivable however. But the better question is, which aircraft is better able to carry out a runway denial mission regardless of specific ordnance, and in that case the Super Hornet wins.
You have no idea what you are talking about. What Gate says mean little as he doesn’t control the US Defense Budget. Also, as I have stated over and over again. Mr. Gates has tried to kill the GE F136 and C-17 for the last few years to no avail!!!!!
No need to get hostile about it.
Gates does not write the actual budget that the President signs. However he is responsible for the proposed budget that is sent to Congress as part of the President’s overall budget request. And he most definitely can influence the President on defense procurement matters — he recommended to Obama that the FY2010 defense budget be vetoed if it included funds for the F-22, and guess what, the F-22 got canceled despite all of the frothing objections from Georgia.
The reality is that most program cancellations by defense secretaries go through. The C-17 is a huge jobs program and so is very difficult to cut, and the F136 is relatively inexpensive and so it is easy to keep alive. Something like the F-35B is neither a major jobs program nor cheap and easy to justify, and if he wants it dead, it will die. That’s just reality, same as it was for the AH-66, the F-22, the DDG-1000, the FCS, the VH-71, the ARH-70, and the dozens of other programs that have died in the last decade.
Reliability and Capability cannot reduce the cost , The F-22 still would remain (no matter how much money you throw into it) quite expensive to own and operate as compared to a F-16 or f-35 . With the F-35 they get to replace the F-16 and the F-16’s and also the Harrier and make up the BULK of the USAF and preserve some form of squadron strenght they have now.
Realize, though, that the F-35 is more expensive both to purchase and to operate than the F-16, Harrier, or F/A-18A-D. This will necessarily have an impact on fleet sizes.
The thing you have to look at is whether it’s really worth it to have every single fast jet in your fleet carry around the weight and expense of first-day-of-war stealth. I agree that the USN needed a manned VLO airframe; the saner thing to do would have been to upgrade the F-22 for the AF and buy it in larger numbers, develop a stealthy carrier-based strike fighter for the Navy, and continue procuring updated 4th gen types for the bulk of USN, USMC, and USAF squadrons. What we have instead is a mess.