On- orbit Satellite Servicing Status and Strategy of Japan

Transcription

1 On- orbit Satellite Servicing Status and Strategy of Japan May 2012 Mitsushige Oda (Prof. Dr.Eng.) Japan Aerospace ExploraGon Agency (JAXA) Tokyo InsGtute of Technology

2 Mitsushige Oda Joined NASDA (now JAXA) in 1977 Control system engineer Being involved in the space robogcs Principal InvesGgator of the ETS- VII robot mission and the REX- J Received AIAA AutomaGon and RoboGcs Award in 2011

3 Contents < On- orbit Satellite Servicing > What is OOSS? Status of Japan Missions conducted : MFD, ETS- VII, JEM, HTV Next mission, REX- J (Robot Experiment on JEM) Missions Prepared & being studied Roadmap to realize the OOSS Challenge of OOSS, technology and economy Conclusions

4 What is On- Orbit Satellite Service? On- Orbit Satellite Service will support to accomplish / resume / maintain / finish preplanned mission of customer s satellite(s) such as; LogisGcs support (refuel, supply coolant / consumables ) Rescue from stranded situagon (trouble in deploying antenna, solar paddle, etc.) MiGgaGon of orbital debris (replace from orbit) On- orbit assembly / maintenance of large space pladorm such as ISS and SSPS Needed technologies Rendezvous, Capture, Orbital Transfer, Dexterous ManipulaGon, LocomoGon along surface of orbital faciliges.

5 Missions Conducted by JAXA JAXA conducted following missions to get technologies for the on- orbit servicing. MFD (Manipulator Flight DemonstraGon) in Aug ETS- VII (Engineering Test satellite 7) in Nov JEMRMS (RMS of the Japanese Experiment Module, ISS) HTV (ISS logisgcs support vehicle)in Sept. 2009, Jan. 2011, July 2012

6 Mission Conducted MFD (Manipulator Flight DemonstraGon) Mission Verify design of the Japan s first space oriented manipulator (JEM- RMS) Conducted on the space shuele cargo bay in Aug Proto- type model of the JEMRMS small fine arm was tested on the cargo bay of the space shuele. Onboard crew controlled MFD robot arm from the afer cockpit of the shuele.

7 ETS- VII (Engineering Test Satellite 7) Mission of ETS- VII Demonstrate the automated Rendezvous Docking between the two unmanned satellites. Demonstrate the satellite mounted robot System and its uglizagon. (Satellite Servicing) System Chaser satellite (HIKOBOSHI) 2.5 t Target satellite (ORIHIME) 0.4t Launched by H- II in Nov Orbit 550km alt. inc. 35 deg. HIKOBOSHI(Boy) is the star Altair and ORIHIME(Girl) is the VEGA. These tow stars are high in the night sky in late summer. However these two stars are separated by the Milky way. They are alowed to meet each other once a year on 7 th of July.

8 Rendezvous Docking Experiments on ETS- 7 Automated Rendezvous Docking GPS- R (long distance), Laser Radar (medium range) navigagon Proximity (video) sensor based relagve posigon and pose control Low impact docking based on capture berthing mechanism These technologies were applied to the HTV, JAXA s logisgc support vehicle to the ISS.

9 ETS- VII s Robot mission DemonstraGon of the Satellite Mounted Space Tele- RoboGcs System. Tele- operagon from the ground stagon using a data relay satellite in GEO. (NASA s TDRSS was used on contract ) Time Delay : 6 to 7 seconds. Coordinated Control of the Satellite Pladorm and the Satellite Mounted Robot Arm to avoid loss of amtude stability of the satellite pladorm ETS- 7 Chaser & Target Sats NASA TDRS ETS- VII Mission OperaGons (RVD, RBT) JAXA Tsukuba Space Center NASA / GSFC NASA s TDRSS stagon at NM

10 ETS- VII s Satellite Servicing DemonstraGon Tele- operagon of the onboard robot arm under the supervised and the tele- manipulagon mode. DemonstraGon of Satellite Servicing Tasks. Handling of ORU (Orbital Replacement Unit) Fuel supply experiment Use of add- on tools (for dedicate tasks, for satellite capture) <Lef Photo> Handling dedicate equipment (push bueon switch, slide lever, peg- in, capture a floagng ball, truss structure, etc.) (photo Center) Capture the target satellite by the onboard robot arm. (Photo Right)

11 HTV (H2 Transfer Vehicle to carry ISS s logisgcs ) total payload = 6 ton Total mass incl. P/L : 16.5 ton Use of CBM (Common Berthing Mechanism) allow carrying large payload into the ISS s cabin Can carry large exposed equipment Launched by H- IIB rocket HTV- 1: HTV- 2: HTV- 3:

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13 Future Space Robots Astronaut Support Robots will be highly needed to uglize ISS. NASA s Robonaut is one of the Astronaut Support Robot Technologies needed by the astronaut support robots Improved manipula(on capability such as astronaut s hand with globe. Locomo(on capability to move around where the service is needed. Tele- operagon capability to conduct tasks like ETS- VII s robots. REX- J (Robot Experiment on ISS/JEM) is planned to develop above technologies. Recent research topics in the orbital robogcs Intelligent and Dexterous Space Robots for; Satellite Servicing (InspecGon, Refuel, Orbital Transfer, Debris miggagon) Building SSPS

14 REX- J (Robot Experiment on JEM) Mission Develop and demonstrate the tether based space robot s locomogon capability LocomoGon capability to move along surface of the ISS is important to conduct such as inspecgon of damages caused by space debris, building ultra large space facility such as SSPS ManipulaGon capability to handle some mechanism like an astronaut Experiments To be launched by HTV- 3 in July, 2012 and will be aeached to the Exposed Pladorm.

15 HST Service Vehicle Based on AO issued by NASA, HST service vehicle to capture and de- orbit HST was studied. Based on HTV to rendezvous with HST and de- orbit HST, JEMRMS to capture HST, and ETS- VII to berth HTV. Unfortunately proposal was not issued from JAXA.

16 JAXA s Space RoboGcs Road Map Orbital Robots Dexterous, Intelligent Robot System for; Satellite service, Building SSPS, Clean- up debris Astronaut Support Robot System to support ISS/JEM uglizagon REX- J(2012) Explora(on Robots Manned Lunar / Planetary Ac(vi(es Support Robots CollaboraGons with astronauts Space Robot System (ETS- VII, JEMRMS, HTV) Lunar Planetary Explora(on Robots Capability to go through rough terrain Survival under low temperature

17 Conclusions Technologies needed to realize the Satellite Servicing are maturing. Economical feasibility is also progressing. LogisGc support of ISS is maturing RelocaGng used satellite from GEO In- orbit maintenance (InspecGon, refuel, orbit change Assembling large space facility using robots

18 Comments & Inquiries I m very sorry for no show. Comments and Inquiries are welcomed at Oda.mitsushige@jaxa.jp

19 BACK UP

20 ETS- VII s Capture Berthing

21 REX- J experiment system consists of ; robot main body suspended by three tethers One extendable STEM based extendable robot arm (Two fingered hand is aeached at the end of the robot arm The extendable root arm can manipulate a tether hook aeached to the 4 th tethers. Robot supported 4 th tether will modify the robot s locomogon area.

22 JAXA s concept of SSPS Microwave based SSPS (M- SSPS) Laser based SSPS (L- SSPS)