Sagar Bhatt

Papers

Total Citations

120

H-Index

About

Sagar Bhatt is a spacecraft guidance and control researcher whose work has made meaningful contributions to the operational efficiency of the International Space Station (ISS). His research focuses on attitude control, maneuver optimization, and the integrated use of propulsion and momentum management systems for large spacecraft. Bhatt's most significant contribution is his foundational work on Zero-Propellant Maneuver (ZPM) guidance, detailed in his highly cited 2009 paper with 108 citations. This innovative approach leverages the ISS's control moment gyroscopes (CMGs) in concert with its thruster systems to execute large-scale attitude reorientations while dramatically reducing propellant consumption — a critical advantage for a station dependent on costly resupply missions. Building on this theoretical foundation, Bhatt went on to demonstrate real-world applicability through the first-ever flight demonstrations of Optimal Propellant Maneuver (OPM) technology, documented in his 2013 paper. On August 1, 2012, two 180-degree ISS reorientations successfully validated the approach in orbit, marking a landmark achievement in applied aerospace engineering. His work exemplifies the powerful bridge between control theory and practical spaceflight operations.