View source for Astronomy:DRUMS

{{Infobox spaceflight
| name              = DRUMS
| names_list        = Debris Removal Unprecedented Micro-Satellite
| image             = 
| image_caption     = 
| image_size        = 300px

| mission_type      = [[Engineering:Technology demonstration|Technology demonstration]]
| operator          = [[Company:Kawasaki Heavy Industries|Kawasaki Heavy Industries]]
| COSPAR_ID         = 2021-102E
| SATCAT            = 
| mission_duration  = 

| spacecraft        = 
| spacecraft_type   = 
| spacecraft_bus    = 
| manufacturer      = [[Company:Kawasaki Heavy Industries|Kawasaki Heavy Industries]]
| launch_mass       = {{cvt|62|kg}}
| dimensions        = 
| power             = 

| launch_date       = 9 November 2021, 00:55 [[Physics:Coordinated Universal Time|UTC]]
| launch_rocket     = [[Engineering:Epsilon (rocket)|Epsilon]] 
| launch_site       = Uchinoura Space Center
| launch_contractor = [[Organization:JAXA|JAXA]]

| entered_service   = 
| disposal_type     = 
| last_contact      = 
| decay_date        = 

| orbit_reference   = [[Astronomy:Geocentric orbit|Geocentric orbit]] (planned)
| orbit_regime      = [[Astronomy:Sun-synchronous orbit|Sun-synchronous orbit]]
| orbit_periapsis   = {{cvt|560|km}}
| orbit_apoapsis    = {{cvt|560|km}}
| orbit_inclination = 97.6°
| orbit_period      = 
| apsis             = gee

| instruments       = 

| programme         = Innovative Satellite Technology Demonstration-2
| previous_mission  = 
| next_mission      = 
}}

'''DRUMS''' ('''Debris Removal Unprecedented Micro-Satellite''') is an experimental spacecraft that will test proximity operation near [[Astronomy:Space debris|space debris]]. The [[Engineering:Small satellite|microsatellite]] carries two 'mock space debris' which once deployed will be used as a target for demonstrating approach and contact.<ref name=''2019conf''>{{cite conference |url=https://www.hou.usra.edu/meetings/orbitaldebris2019/pdf/6153.pdf|title=Key Technology Demonstration for Active Debris Removal by Microsat "DRUMS" |last1=Nakamoto|first1=Hiroki|last2=Maruyama|first2=Tatsuya |last3=Sugawara|first3=Yasutaka|date=9 December 2019|publisher=Universities Space Research Association|conference=First International Orbital Debris Conference|access-date=24 September 2021}}</ref>

== Overview ==
DRUMS was developed by Japanese company [[Company:Kawasaki Heavy Industries|Kawasaki Heavy Industries]] (KHI), which will also operate the satellite following its launch.<ref name="Mynavi2021">{{cite news|last=Otsuka|first=Minoru|date=August 24, 2021|title=9機の革新衛星は宇宙で何を実証する？ イプシロン5号機で10月に打ち上げへ|language=ja|url=https://news.mynavi.jp/article/20210826-1956798/|newspaper=Mynavi News|access-date=2021-09-14}}</ref> DRUMS will be operated from a ground station inside KHI's Gifu Works facility, and an antenna for communicating with the satellite was finished in October 2019.<ref>{{cite press release|title=Kawasaki Establishes Satellite Ground Station to Pursue Space Debris Removal Operations|url=https://global.kawasaki.com/en/corp/newsroom/news/detail/?f=20191004_8919|publisher=Kawasaki Heavy Industries|date=October 4, 2019|access-date=September 24, 2021}}</ref> KHI characterizes DRUMS as a demonstration for future missions to remove launch vehicle upper stages from orbit,<ref name="MONOist">{{cite news|last=Otsuka|first=Minoru|title=宇宙のお掃除サービスはいつ実現する？ デブリ除去衛星開発の最前線を追う|url=https://monoist.atmarkit.co.jp/mn/articles/2007/02/news019.html|language=ja|newspaper=MONOist|date=July 2, 2020|access-date=2021-09-14}}</ref> along with potential applications for on-orbit satellite servicing.<ref name="Interview11">{{cite web|url=https://www.kenkai.jaxa.jp/kakushin/interview/02/interview02_11.html|title=小型衛星を用いてスペースデブリへの接近と捕獲の技術実証を行い、軌道上サービスへの事業拡大を目指す|language=ja|publisher=JAXA|access-date=2021-09-24}}</ref> DRUMS was launched on 9 November 2021 by an [[Engineering:Epsilon (rocket)|Epsilon launch vehicle]].<ref>{{cite web|url=https://www.jaxa.jp/press/2021/11/20211109-1_j.html|script-title=ja:イプシロンロケット5号機による革新的衛星技術実証2号機の打上げ結果について|language=ja|trans-title=Innovative satellite technology demonstration by Epsilon rocket No. 5 About the launch result of No. 2|publisher=JAXA|date=9 November 2021|access-date=9 November 2021}}</ref> A half size model of DRUMS was displayed at the 2019 G20 Osaka summit.<ref>{{cite news|url=https://www.jwing.net/news/14564|title=川崎重工、G20大阪サミットで宇宙ゴミ除去技術を展示|language=ja|newspaper=WING Aviation Press|date=July 1, 2019|access-date=2021-09-24}}</ref>

== Mission ==
Once in orbit, DRUMS will deploy two nonfunctional objects, which will act as targets for DRUMS's space debris approach test. After distancing itself from the target, DRUMS will then begin to approach it using on board optical sensors.<ref name="Mynavi2018">{{cite news|last=Otsuka|first=Minoru|date=December 4, 2018|url=https://news.mynavi.jp/article/20181204-735579/|title=川重がデブリ除去で衛星分野に参入、2020年にも打上げ-国際航空宇宙展2018|language=ja|newspaper=Mynavi News|access-date=2021-09-14}}</ref><ref name=''visualnav''>{{cite conference|url=https://jaxa.repo.nii.ac.jp/?action=pages_view_main&active_action=repository_view_main_item_detail&item_id=2842&item_no=1&page_id=13&block_id=21|title=Study on visual based navigation algorithm for active debris removal missions |last1=Morita|first1=Daichi|last2=Watase|first2=Hirotaka|last3=Maruyama|first3=Tatsuya|last4=Shibasaki|first4=Koichi|last5=Yamamoto|first5=Toru|last6=Murakami|first6=Naomi|last7=Nakajima|first7=Yu
|publisher=JAXA|book-title=JAXA Special Publication: Proceedings of the 8th Space Debris Workshop|pages=473–484|conference=The 8th Space Debris Workshop|access-date=14 September 2021}}</ref> The microsatellite has nitrogen gas propulsion for maneuvering, along with lighting it will use to illuminate the target while inside [[Earth:Earth's shadow|Earth's shadow]].<ref name="Mynavi2021"/><ref name="Interview11"/> Once it has arrived near the target, DRUMS will extend a {{cvt|2|m}} boom, which will be used to physically contact the target.<ref name="Mynavi2018"/><ref name="Interview11"/> DRUM's camera will record the overall sequence of the test.<ref name=''2019conf''>{{cite conference|url=https://www.hou.usra.edu/meetings/orbitaldebris2019/pdf/6153.pdf|title=Key Technology Demonstration for Active Debris Removal by Microsat "DRUMS" |last1=Nakamoto|first1=Hiroki|last2=Maruyama|first2=Tatsuya|last3=Sugawara|first3=Yasutaka|date=9 December 2019|publisher=Universities Space Research Association|conference=First International Orbital Debris Conference|access-date=24 September 2021}}</ref>

== See also ==
* [[Astronomy:ClearSpace-1|ClearSpace-1]]
* [[Astronomy:RemoveDEBRIS|RemoveDEBRIS]]

== References ==
{{Reflist|30em}}

== External links ==
* [https://www.kenkai.jaxa.jp/kakushin/kakushin02.html#drums DRUMS]


[[Category:Space debris]]

{{Sourceattribution|DRUMS}}