Learn about Nambi Narayanan , a retired senior official at ISRO who invented liquid fuel rocket technology and was falsely accused of espionage in 1994. Find out his age, family, education, achievements, controversies, and autobiography. Learn about the life and achievements of Nambi Narayanan , a visionary scientist who revolutionized liquid propulsion systems at ISRO and fought for justice after a false espionage case. Explore his biography, career, awards, and the impact of his work on India's space program. Nambi Narayanan is an aerospace engineer who previously worked with the Indian Space Research Organisation (ISRO). He came into the limelight in 1994 when he was arrested under false charges of espionage. Narayanan was later given a compensation of Rs 1.3 crore by the Kerala government. Recognising his contribution to the development of rocket science in India, the Government of India conferred Narayanan with the country’s third-highest civilian award, Padma Bhushan, in 2019.