victor1985 wrote:APU meaning what? some kind of extra sistems that gain energy from wind or omething? since some aircrafts are designated not to be stealth and dont need special materials on it you and they defend themselfs whit the weapons on board why just not fill the aicraft body whit solar panels? or at last some partsmedo wrote:victor1985 wrote:yea and i thinked to antennas not radar itself. let me put a question:a radar power (distance in wich he is effective) depends on electricity? mean depends on power of the curent?GarryB wrote:It isn't necessary to put the radar in the nose, but most radars are large... too round to fit in the wings and you have to have a nose on the aircraft whether it has a radar in there or not so it just makes sense to fit the radar there.
few monts ago i tried to make on paper a design of a flux generator. the ideea was that meta materials cooled whit freon spins around metal tracks and generate energy
also for a aircraft the air could be used to generate energy
Of course a radar power depend on electricity, which were produced from engines or from additional APUs. Su-30SM have quite powerful radar Irbis-R with 15 kW peak power, the same as V-004 radar in Su-34 and Zaslon in MiG-31. Su-35 have more powerful engines and its Irbis radar have 20 kW peak power. I think PAK-FA will have similar peak power of its radar. Su-34 also have powerful ECM electronics and it have additional APU in tail sting. Powerful radars are also more resistant to jamming as many times jamming signal doesn't have enough power to jam radar signal, what mean jammer have to come closer or have to be stronger.
Smaller single engine fighters have less powerful radars, usually with 5 kW peak power.
APU meaning auxiliary power unit. It is additional electro generator. Tanks and SAMs also have them to operate their systems without using their main engine.