Cain Marko wrote:
tsarkar wrote:Ummm, do fighter planes physically shove each other for air superiority like Sumo Wrestlers shoving each other? In that case FOV will be limited....If they engage at 500 meters separation, there is no effect of shadow either in look up or look down mode.
Tsarkarji I'm not sure about your sumo wrestler analogy but could do without the patronizing please.
Cain Markoji, my apologies, no offence intended but the sumo wrestler analogy was a valid datapoint.
But here are more relevant datapointshttps://en.wikipedia.org/wiki/AIM-9_Sidewinder
The warhead features a safe/arm device requiring five seconds at 20 g (~200 m/s²) acceleration before the fuze is armed, giving a minimum range of approximately 2.5 kilometers.
minimum range is said to be 2 km
There is a reason for these minimum ranges. The aircraft too is flying forward with a high relative velocity and the missile needs to clear the launch aircraft to prevent its warhead explosion damaging launch aircraft or causing FOD ingestion in the engines.
Now every poster (other than Shiv) is thinking in terms of aircraft geometry. Only Shiv wrote in terms of engagement geometry and "cone of aerospace."
If in the two Tejas photos posted, one by JayS & other by me, and the F-15 photo, one draws a simple cone with EO Ball as the vertex and a line segment from the vertex passing through the farthest extremity of the aircraft (pitot tube in case of Tejas and radome tip in case of F-15) with a slant height of 2 - 2.5 km, one gets a cone of aerospace of great volume and base area. The blind spot will be a small percentage of the cone base area. As the slant height increases beyond 2 km to 5 km, the base area of the cone proportionately increases while the percentage of blind spot in the cone base area reduces even further.
The probability of an enemy aircraft 5 km away to penetrate a blind spot in the overall base area is very remote.
A graphical tool would explain this much better by drawing cones of successively longer slant heights.
Cain Marko wrote:So I'm still not sure how a ventrally located irst can do the same job as a nose cone irst against high flying targets.
The Litening sensor head swivels in elevation and azimuth as does the COMPASS head. In this photo it is swiveled completely back to prevent FOD damage to sensor head during takeoff & landing.
If the high flying target is 2 km or 5 km away, then the elevation angle will be within the elevation angle of the sensor head and seeker FOV.
If the high flying target is within 2 km, then you cant use missiles and gun is the only remaining option with gunsight.