Spectra's miracles
The first miracle concerns the Rafale's Radar Equivalent Surface (SER). On this subject we have two contradictory declarations, coming from Dassault employees. And the surer statement is the more surprising one! Both may be true and the contradiction is probably due to the very different dates on which they were made.
The first statement was made by a Dassault engineer who said that the SER of the Rafale was between 1/10 and 1/20 of the SER of the Mirage 2000.
This statement can be combined with that of a SAAB engineer who said of the Gripen A that its SER was half that of a Mirage 2000 and one third that of an F-16 Block 42.
Now the SER of the F-16 Block 42 is known because it was the result of a SER reduction campaign that L.M. announced as being 1.2 m^2.
We deduce that the SER of the Mirage 2000 to which SAAB refers is 0.8 m^2 and the SER of the Rafale is 0.06 +/- 0.02 M^2.
All this in front and smooth of course.
Is this possible? The Anglo-Saxons don't believe it, for example in the "Command" game the Rafale has the same SER as the Typhoon of 0.47 m^2 close to the one SAAB indicates for the Gripen A (0.40).
The difference could come from SPECTRA.
The second statement is made by Bruno Revellin Falcoz, Director of the Rafale programme at its launch, then Technical Director of Dassault Aviation, then Vice President of Dassault Aviation, who says in a video that the SER of a Rafale seen from the front is comparable to that of a sparrow.
The statement is at 11' 25.
Is this possible? Nobody believes it! We are still in the orders of magnitude of the F-22, that is to say a SER of 0.0001 m^2 let's say 0.001 to be conservative. So of course it's head-on and smooth.
Where could this performance come from? We think of DEDIRA
and
So if there are no structural changes, we are thinking of course of SPECTRA. This would mean that active cancellation would have been greatly improved by DEDIRA.
But what about carry-overs?
In principle, the SER reduction method can also be applied to load. In fact, it seems that the Rafale makes a little trip to the anechoic chamber each time a new carrier is to be integrated. But as the carriers have a larger SER than a Rafale seen from the front, it is more difficult, from a processing point of view, and it requires more energy, because the return signal that we must cancel is stronger.
Just to set orders of magnitude, let's assume that the SER of the Rafale seen from the front without processing is 0.5 m^2 and that the payload has a SER of 5 m^2.
So the first treatment, which reduces from 0.47 to 0.06, would give a SER of 0.6 with the loads,
And the second treatment which increases from 0.47 to 0.001 would allow a SER of 0.01 with load.
The first miracle concerns the Rafale's Radar Equivalent Surface (SER). On this subject we have two contradictory declarations, coming from Dassault employees. And the surer statement is the more surprising one! Both may be true and the contradiction is probably due to the very different dates on which they were made.
The first statement was made by a Dassault engineer who said that the SER of the Rafale was between 1/10 and 1/20 of the SER of the Mirage 2000.
This statement can be combined with that of a SAAB engineer who said of the Gripen A that its SER was half that of a Mirage 2000 and one third that of an F-16 Block 42.
Now the SER of the F-16 Block 42 is known because it was the result of a SER reduction campaign that L.M. announced as being 1.2 m^2.
We deduce that the SER of the Mirage 2000 to which SAAB refers is 0.8 m^2 and the SER of the Rafale is 0.06 +/- 0.02 M^2.
All this in front and smooth of course.
Is this possible? The Anglo-Saxons don't believe it, for example in the "Command" game the Rafale has the same SER as the Typhoon of 0.47 m^2 close to the one SAAB indicates for the Gripen A (0.40).
The difference could come from SPECTRA.
The second statement is made by Bruno Revellin Falcoz, Director of the Rafale programme at its launch, then Technical Director of Dassault Aviation, then Vice President of Dassault Aviation, who says in a video that the SER of a Rafale seen from the front is comparable to that of a sparrow.
The statement is at 11' 25.
Is this possible? Nobody believes it! We are still in the orders of magnitude of the F-22, that is to say a SER of 0.0001 m^2 let's say 0.001 to be conservative. So of course it's head-on and smooth.
Where could this performance come from? We think of DEDIRA
The main part of Dedira is "electronic". Because I could learn that the demonstrator already flies, and it works pretty well. And if there was a structural modification, we would know about it. someone would have spotted it. And a Rafale in France is not easily hidden.
and
The information I have on DEDIRA, I have it... From above. A person I met in Mérignac. The information is therefore certain... But it's not much. Not enough to make an article, and it's extremely confidential. The rest are logical deductions.
So if there are no structural changes, we are thinking of course of SPECTRA. This would mean that active cancellation would have been greatly improved by DEDIRA.
But what about carry-overs?
In principle, the SER reduction method can also be applied to load. In fact, it seems that the Rafale makes a little trip to the anechoic chamber each time a new carrier is to be integrated. But as the carriers have a larger SER than a Rafale seen from the front, it is more difficult, from a processing point of view, and it requires more energy, because the return signal that we must cancel is stronger.
Just to set orders of magnitude, let's assume that the SER of the Rafale seen from the front without processing is 0.5 m^2 and that the payload has a SER of 5 m^2.
So the first treatment, which reduces from 0.47 to 0.06, would give a SER of 0.6 with the loads,
And the second treatment which increases from 0.47 to 0.001 would allow a SER of 0.01 with load.