War wont last more than a month, DRDO people never ever worked for 24hrs a day, Their job is just like another govt job.
DRDO scientists do work 24 hours, sometimes they work 3 to 4 days at a stretch before coming home. When my grandpa worked on the Agni program he wouldn't come home for 3 to 4 days at a stretch. They have certain deadlines to cover that needs an incredible amount of chewing on data both manually and feeding into supercomputers. There are times when they do nothing and then there are times when they do too much. It is stressful.
Even my friend who worked on the design team of Lakshya and Nishant had given 3 days at a stretch to cover deadlines. They used to sleep for a few hours and work for 12 to 18 hours, then sleep for 3 -4 hours again. Eating would all happen during work. A lot of this is very occasional though.
The fact is my friend worked for a private firm that likes sticking to deadlines. But the moment he was invited by a PSU to complete work on the same project it became terrible. What used to take hours turned into weeks in the PSU. He pointed out a huge difference between the work ethics he had in the private company compared to the PSU. The workers in the PSU loved going home though. He said he was never more relaxed since he ever started working.
As for my Grandpa's case, he worked directly under APJ Kalam. So, the leadership was good. This leadership isn't guaranteed in all other fields. Only critical projects in DRDO, mainly the missile program has gone well.
The last I was in ISRO was to see the integration of the Chandrayaan satellite. The scientists there work hard as well. But the quality of work they do is nowhere compared to DRDO's non missile community.
According to my friend's words, there is a huge difference between working hard and making things happen. This is the biggest fault in our defence PSUs. They never decide on anything. There are so many varied opinions that they don't know which one to use to fix a problem. Deciding this is important, because they cannot waste money on something that may not work. Meaning they know what the problem is and they know the solution. But by the time they decide on which solution to work on, the project itself is left in the limbo. By the time they decide and implement any solution the program would have been delayed by many years. Leadership is the biggest problem and it isn't good while teamwork is worse.
The scientists are all smart, meaning they all know their stuff. The best and the brightest available to the PSUs are taken in. But there is something that is accepted by the Private sector as well, best and brightest does not mean efficient and capable. Ask anybody in LRDE on how an AESA radar works he will answer. Ask them to build an AESA radar, they scratch their heads. Theoretical knowledge is by itself not enough and their practical experience is next to nothing. This is another big issue plaguing our PSUs. They simply don't have experience and the Army's requirements have hit the sky. Their requirements from foreign vendors are sometimes too tough for them to deliver as well. For eg: All the SAMs that the services are expecting from EADS and Rafael are things they themselves have not developed. Unlike previous projects where the services merely bought already developed products, this time there is a lot of development happening as well. MKI is an example of such a project. The MKI is beyond the requirements of the Russian Air force.
Lastly is the question of funds. Whenever scientists come up with a breakthrough, securing funds would require an equally copious amount of time to be released. A lot of bureaucratic hurdles between the ministry and within the PSU itself along with releasing funds to outsourced departments. There are times when my friend used to come to work, fool around and go back because they needed funds to continue. This blame rests with both MoD as well as the PSUs.
The biggest hurdles are leadership and team work, experience and then funds. These are primary irritants to all our projects. Lack of focus is also a big pain. Nothing is planned. Whenever roadblocks are overcome, there is no preparations done to prevent another roadblock which takes up even longer time to overcome.