ISRO considering rendezvous and docking experiment

ISRO considering rendezvous and docking experiment

In the 12^th five year plan of ISRO, a new initiative of Space Docking Experiment has been mentioned.  The experiment will be based on the low impact docking concept (berthing scheme, Fig.1) using two small satellites (IMS-1 class ~ 100 kg, Fig.2). During the plan period a number of small satellite (IMS class) missions have been planned to demonstrate the new emerging technologies. Rendezvous and Docking (RVD) is one of the major missions of technology demonstration . These satellites will be flown on the PSLV missions as auxiliary or co-passenger satellites.

Figure. 1. International low impact docking system.

Figure 2. IMS satellite, ISRO.

Possible Applications: Mastering the RVD technology will help ISRO in future space missions. One possible use could be in orbit servicing of  satellites. ISRO operates large number of  satellites  that are used for communication, remote sensing and soon for navigation purpose. Life of these satellites is limited by the amount of fuel they carry with them in orbit. RVD will allow ISRO to dock a servicing spacecraft with a satellite for the purpose of servicing and refueling. This will increase lifespan of the satellite and save the cost of building replacement satellites. Another advantage of satellite servicing is reduction in space debris as fewer replacements will be required for a satellite. RVD is also critical for Human Space Flight program of ISRO.