What are the principles behind the working of Reusable Launch Vehicle (RLV)? Explain the significance and potential benefits of RLVs in India's space commerce.

SpaceX has designed Reusable Launch Vehicles RLVs like Falcon Heavy as a significant step in space economy. Principles behind working of RLVs (1) Launch Vehicle transports load spacecraft to space. (2) Smooth transition to orbit and return journey using telemetry and backing operations. (3) Soft landing on ocean or land by launch vehicle. Significance (1) Reusable launch vehicles are not expandable. (2) Significantly reduce cost.

Potential benefit in India's space commerce: (1) Help enhancing India's contribution in space economy from 2% to 10% (Indian Space policy 2023) (2) India as emerging leader in providing small launch vehicle services. (3) Private sector can make this drive achievable. Challenges (1) Adoption of technology (2) Late entry of private sector (3) Undercapacity of LVs - GSLV only 2 eggs. Adopting RLV technology will help fulfilling vision of leadership in space sector.