Hayabusa2 Asteroid Sample Return Mission

Technological Innovation and Advances

1st Edition - April 14, 2022
Authors: Masatoshi Hirabayashi, Yuichi Tsuda
Language: English
Paperback ISBN:
9 7 8 - 0 - 3 2 3 - 9 9 7 3 1 - 7
eBook ISBN:
9 7 8 - 0 - 3 2 3 - 9 9 7 3 2 - 4

Hayabusa2 Asteroid Sample Return Mission: Technological Innovation and Advances covers the second Japanese asteroid sample return mission. The purpose of the mission is to survey… Read more

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Hayabusa2 Asteroid Sample Return Mission: Technological Innovation and Advances covers the second Japanese asteroid sample return mission. The purpose of the mission is to survey the asteroid Ryugu’s surface features, touch down on the asteroid, form an artificial crater by shooting an impactor, and collect sample materials. This book covers these operations, along with everything known about key technologies, hardware and ground systems upon Hayabusa2’s return to Earth in 2020. This book is the definitive reference on the mission and provides space and planetary scientists with information on established technologies to further advance the knowledge and technologies in future space exploration missions.

Cover image
Title page
Table of Contents
Copyright
Contributors
Chapter 1: Hayabusa2 as the beginning of deep space sample return
Abstract
Chapter 2: Mission objectives, planning, and achievements of Hayabusa2
Abstract
Acknowledgments
2.1: Introduction
2.2: Mission design
2.3: Mission operation results
2.4: Mission achievements
2.5: Conclusion
References
Chapter 3: Spacecraft system design of Hayabusa2
Abstract
3.1: Introduction
3.2: Spacecraft system
3.3: Spacecraft resources and operation concept
3.4: Spacecraft development and external interfaces
3.5: Conclusion
References
Chapter 4: Earth-Ryugu round-trip trajectory design and operation result
Abstract
Acknowledgments
4.1: Introduction
4.2: Round-trip trajectory design
4.3: Ion engine propulsive cruise operation
4.4: Terminal guidance operations
4.5: Conclusion
References
Chapter 5: Orbit determination for Hayabusa2
Abstract
Acknowledgments
5.1: Introduction
5.2: OD methods during continuous ion-engine thrusting phase
5.3: Simultaneous OD of Hayabusa2 and Ryugu
5.4: Conclusions
References
Chapter 6: Hayabusa2 reentry and recovery operations of the sample return capsule
Abstract
Acknowledgments
6.1: Introduction
6.2: Spacecraft return operation
6.3: Outline of the reentry and the recovery operation
6.4: Direction finding system
6.5: Marine radar system
6.6: Ground observation system
6.7: Capsule and sample
6.8: Unmanned aerial vehicle
6.9: Helicopter
6.10: Conclusion
References
Chapter 7: Overview of the Hayabusa2 asteroid proximity operations
Abstract
Acknowledgments
7.1: Asteroid proximity operation phase
7.2: Hovering operation
7.3: Critical descent operation
7.4: Activity before arrival
7.5: Overview of asteroid proximity activities
7.6: Conclusion
References
Chapter 8: GNC design and results of Hayabusa2’s initial remote sensing operations
Abstract
Acknowledgment
8.1: Introduction
8.2: Spacecraft overview
8.3: Translational GNC framework
8.4: Initial remote sensing operations
8.5: GNC design and results
8.6: Conclusion
References
Chapter 9: Controlled descent of Hayabusa2 to Ryugu
Abstract
9.1: Introduction
9.2: Controlled descent
9.3: Accuracy improvement measures
9.4: Flight results
9.5: Conclusions
References
Chapter 10: Landing site selection for the Hayabusa2 mission: Pre-arrival training and post-arrival analyses
Abstract
10.1: Introduction
10.2: LSS overview
10.3: LSS training
10.4: LSS for the first touchdown
10.5: LSS for the second touchdown
10.6: Conclusion
References
Chapter 11: MINERVAI-I-1A/B asteroid rover: Deployment and landing
Abstract
11.1: Introduction
11.2: MINERVA-II-1A/B deployment operation
11.3: Rover landing site selection
11.4: Operational design and analysis
11.5: Operation result
11.6: Conclusion
References
Chapter 12: MASCOT lander release operation
Abstract
Acknowledgments
12.1: Introduction
12.2: Operation preparation
12.3: Descent operation
12.4: MASCOT release operation
12.5: Hovering operation
12.6: Conclusions
References
Chapter 13: Superior solar conjunction phase: Design and operations
Abstract
Acknowledgments
13.1: Introduction
13.2: Design of the ayu conjunction trajectory in the Hill's problem
13.3: optNEAR tool: N-body planetary propagator
13.4: Results of the solar conjunction mission operations
13.5: Lesson learned during the solar conjunction phase
13.6: Conclusions
References
Chapter 14: Touchdown operation planning, design, and results
Abstract
14.1: Introduction
14.2: Touchdown operation planning and design
14.3: Touchdown operation result
14.4: Strategy changes during preparation for touchdowns
14.5: Conclusion
References
Chapter 15: Hayabusa2’s kinetic impact experiment
Abstract
15.1: Small carry-on impactor (SCI)
15.2: Deployable camera 3 (DCAM3)
15.3: Sequence of the impact experiment
15.4: Results of the impact experiment
15.5: Conclusion
References
Chapter 16: Orbiting experiment of artificial objects deployed from Hayabusa2
Abstract
Acknowledgment
16.1: Introduction
16.2: Operation outline
16.3: Orbit design around the asteroid
16.4: Operation design
16.5: Operation result
16.6: Conclusion
References
Chapter 17: Target markers for image-based autonomous navigation
Abstract
Acknowledgments
17.1: Introduction
17.2: Target marker
17.3: Target marker tracking
17.4: Ground tests
17.5: In-flight results
17.6: Conclusions
References
Chapter 18: Touchdown and sampling from asteroid Ryugu
Abstract
18.1: Introduction
18.2: Sampling system
18.3: Touchdown and sampling
18.4: Contact dynamics and analysis
18.5: Operational results
18.6: Conclusion
References
Chapter 19: Hayabusa2 radio science investigation
Abstract
Acknowledgments
19.1: Introduction
19.2: Initial gravity estimation during approach phase
19.3: Global gravity estimation
19.4: Local gravity estimation
19.5: Gravity estimation using small probes
19.6: Summary
References
Chapter 20: Ion engine system of Hayabusa2
Abstract
Acknowledgments
20.1: Introduction
20.2: Ion engine subsystem
20.3: Results of IES cruise operation
20.4: Conclusion
References
Chapter 21: Sensitivity degradation of optical navigation camera and attempts for dust removal
Abstract
Acknowledgments
21.1: Introduction
21.2: Darkening of ONC-W1 upon touchdown
21.3: Attempts for removal of dusts and dark spots
21.4: Darkening of target marker images by ONC-W1
21.5: Conclusions
References
Chapter 22: Chemical propulsion system
Abstract
Acknowledgments
22.1: Introduction
22.2: Construction of chemical propulsion system
22.3: Application status of Hayabusa2 chemical propulsion system
22.4: Thruster impulse
22.5: Regolith dispersion due to thruster plume
22.6: Conclusions
References
Chapter 23: Telecommunication subsystem and newly introduced Ka-band performance of HAYABUSA2 asteroid sample return mission
Abstract
Acknowledgments
23.1: Introduction
23.2: Telecommunication subsystem for HAYABUSA2
23.3: X- and Ka-band downlink budget design
23.4: Ka-band link advantage for HAYABUSA2
23.5: Future prospects
23.6: Conclusion
References
Chapter 24: Hayabusa2 sample-return capsule: System description and re-entry flight
Abstract
Acknowledgments
24.1: Introduction
24.2: System description of the sample-return capsule
24.3: Design and subsystems of the sample-return capsule
24.4: Entry, descent, and landing of the SRC
24.5: Return and recovery operations
24.6: Postflight analysis of the SRC and trajectory reconstruction
24.7: Concluding remarks
References
Chapter 25: Hardware-in-the-loop simulator and real-time operation training of Hayabusa2
Abstract
Acknowledgments
25.1: Introduction
25.2: Critical operations
25.3: Hardware-in-the-loop simulator (HIL)
25.4: Real-time operation training (RIO)
25.5: Conclusions
References
Chapter 26: Public relations and outreach from the Hayabusa2 project
Abstract
Acknowledgments
26.1: Introduction
26.2: Regularly shared news
26.3: Real-time events
26.4: Campaigns
26.5: Talks
26.6: Additional outreach initiatives
26.7: A note on translation
26.8: Final remarks
References
Chapter 27: Extended mission of Hayabusa2
Abstract
Acknowledgments
27.1: Introduction
27.2: Status of the probe after the earth swing-by
27.3: Selection of the final destination
27.4: Extended mission overview
27.5: Highlights of the extended mission
27.6: Conclusion
References
Index

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