Space Capsule Recovery Experiment (SRE – 1) is a 550 kg capsule intended to demonstrate the technology of an orbiting platform for performing experiments in micro gravity conditions. After completion of the experiments, the capsule was de-orbited and recovered. SRE – 1 mission provided a valuable experience in fields like navigation, guidance and control during the re-entry phase, hypersonic aero thermodynamic, development of reusable thermal protection system (TPS), recovery through deceleration and flotation, besides acquisition of basic technology for reusable launch vehicles.
SRE – 1 carries two experiments, an Isothermal Heating Furnace (IHF) and a Bio-mimetic experiment. SRE was launched into a 635 km polar SSO in January 2007 as a co-passenger with CARTOSAT -2 and stayed in orbit for 10 days during which its payloads performed the operations they are intended to. The SRE capsule was de-boosted and recovered successfully back on earth on 22nd January 2007.