Alright lets get started with NaviC then.
You are by now already aware on how basic ranging works and position is solved for from a GNSS constellation. We will look at a basic structure of the constellation, how the signal is generated, rcv'd and solved for. First lets look at the basic maths behind the positioning and our general sources of error. The basic term you need to know is called pseudorange. we will come to it later

3 days ago a piece came out that India is looking to procure Pralay SRBMs and proposal for an 'Indian Rocket Force' is at highest level at MoD, lets look at the obvious inspiration from our northern neighbors, PLARF. A longish thread. (1/) Since 1985, China's missile forces have undergone significant changes. They were previously a nuclear deterrent force focused on intermediate and medium-range missiles, and used to be called Second Artillery Forces but are now a combination of intercontinental + (2/)

2021 was a very good year for DRDO. A lot of missiles were tested. Here's listing all of them
- SFDR - was tested on Mar 5 and Dec 16. Has been tested 4 times now
- MRSAM(IAF) - First Firing Unit was delivered to IAF on Sep 9
- AGNI P - Was tested twice this year Jun 21, Dec 18 - LRSAM(IN) - Final production batch was flagged off.
- HELINA(Army) & Dhruvastra(IAF) -They've completed user trials as of Feb 19
- MPATGM - Was tested on July 21
- SANT - Flight tested on Dec 11
- Akash NG - Was tested 3 times this year, Jan 25, Jul 21, Jul 23

HAL Annual Report 2021 is finally out. A Thread •Two Light Combat Helicopters (LCH) were deployed for
operations at high altitude at short notice to support IAF
missions on August 12, 2020.
•Three Light Combat Helicopters (LCH) have been produced
and signalled out against the Letter of Intent of IAF.

The story of Il 38

The story of turf war and a new plane began with the 1971 war. Even though the seeds were laid approx. a decade earlier (~1965). INS Khukri incident was the catalyst. When our T14 Frigate was sunk by the PN sub. Navy naturally wanted to procure MRASW aircrafts Now before 71, we did have Maritime Recon planes, the L1049 Super Constellations, but they were with the Air Force.