Do you know of any open sources that describe the scan pattern / area of the N001 (or N001VEP)?
Currently, the N001(VEP) has copy/paste scan patterns of the N019.
In the SUV-29E, it is mentioned that the N019 does not have sufficiently high scan rate (period = 3.6s) to be able to provide mid-course updates for the R-27R in TWS (so a hard lock is required).
My guess is that if that were the case (and because N001 and N019 share a lot of similarities), N001VEP would have to have faster scan patterns (for the R-77), either by increasing the angular velocity of the radar dish, or by introducing a smaller scan pattern for TWS (which I think is more likely), kind of how the APG-66 has a 3 bar ±25° azimuth scan for TWS.
There is an all-angle nozzle for AL-31/41… but there is a conflict of interest between NPO SATURN and NPC SALYUT (although now both companies are members of the ODK) - Saturn does not have a license for the Salyut nozzle… how the RF Ministry of Defense coordinates orders for engines and nobody knows the design…
By 2007 Russian jet engine maker Salut had spent $40 million on developing the AL-31FM1 engine for Su-27, Su-30, Su-33 and other Sukhoi aircraft and successfully completed its tests in October 2006. The modernized version of the famed AL-31F engine features improved thrust characteristics, a 15% increase in combat effectiveness and cycle life, and reduced maintenance costs. The AL-31FM1 will be initially installed on Su-27SM Flanker fighters in service with the Russian Air Force, but it also has a high export potential, a company official said. https://www.globalsecurity.org/military/world/russia/su-27sm.htm
but
