P. Radhakrishan (Nair, Paramaswaran Radhakrishnan)[1] is a veteran space scientist, author and speaker from India.
He retired from the Indian Space Research Organisation as the Deputy Director of Liquid Propulsion Systems Centre.
[7] Radhakrishnan joined the Indian Space Research Organization (ISRO) in 1966 and was involved in the development of India's early satellites like Aryabhata, Rohini and APPLE, and later the Insat satellites.
During the 1984–1986 period – as part of the evaluation to be a Payload Specialist in the STS-61-I (Challenger) mission – he went through extensive tests and training at the Institute of Aviation Medicine, Bangalore and the Johnson Space Center.
[8] He retired from the ISRO's LPSC as the center's deputy director for systems reliability & quality assurance.