Radar Cross section and radar power...

R

rjmaz1

New Member
Looking at this site here...

http://www.f22totalairwar.de/F-22_Total_Air_War_Stealth_Radar_Cross_Section_RCS.htm

This site is VERY impressive at calculating the detection range of various aircraft. One thing that stands out like a sore thumb is the SU-30's radar power.. Now various websites say the peak power of the SU-30 is only 6.5 kw not 63kw..

Could it be possible that the site is missing a decimal point?

I dont see how such a well dont site could have such a critical error.

Can anyone confirm the radar power of the SU-30?
 
K

kams

New Member
Rimaz,

Most of the charts and Su30 MKI related info on that site are lifted from Carlo Kops article, Su30 vs RAAF alternatives, published in Australian Aviation Sep 2003.
 
R

rjmaz1

New Member
  • Thread Starter Thread Starter
  • #5
So where did the original person get the SU-30 power rating from?

Did they just pull it out of their [admin: text deleted. you can use other words to get your point across] ? 63kw is heaps!
 
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D

DoC_FouALieR

New Member
Does this formula in principle apply to sonar as well????
Click to expand...
Yes and No...
At short range with active sonar, the sound waves are not going to be largely affected by the environment, so that should work. For High frequency sonar at short range, I think this formula is ok.
But at longer ranges, sound waves no longer travels in a straight way, because are affected by a lot of parameter like temperature of the water, salinity, etc.. so it is a little bit more complicated.
 
C

Chrom

New Member
DoC_FouALieR said:
Yes and No...
At short range with active sonar, the sound waves are not going to be largely affected by the environment, so that should work. For High frequency sonar at short range, I think this formula is ok.
But at longer ranges, sound waves no longer travels in a straight way, because are affected by a lot of parameter like temperature of the water, salinity, etc.. so it is a little bit more complicated.
Click to expand...
It is close to 6.3 Kw of course. But this formula is not 100% right as there are other factors. For example, radar beam dispersion, clutter rejection (somewhat also related to radar beam dispersion), procession capabilty what is able differentiate moving object... All these factors scale non-linear with range addidionaly to simply 4th order what is normally used for such vague calculations. Most of these factors works in favor of better detecting low-observabilty aricraft at close ranges (or, same to say, worse detection at longer ranges)
 
T

Ths

Banned Member
How about low frequency sonars? Whales do communicate over long distances by that mean. How with detection range, power requirement and so on: No specifics only principles.
 
C

Chrom

New Member
Ths said:
How about low frequency sonars? Whales do communicate over long distances by that mean. How with detection range, power requirement and so on: No specifics only principles.
Click to expand...
Detection range varies greatly depending from water/depth/etc. I know what sometimes it is possible to detect something 3000 miles away, and sometimes you cant hear exact same thing from 10 miles, with exact same sonar. The situation here is very similar to desert mirages - sometimes you see pictures from 500 miles away. The only thing is what it is much less random in ocean as water/temperature/salt distribution tends to be more or less stable.
This information i got from a man who design long range detection sonars for small automatic u-boats.

So usually noone put detection range, but rather db figure.
 
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