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词条 Mr. Steven
释义

  1. Fairing reuse

  2. Modifications

  3. See also

  4. References

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infobox caption = display title = ital
}}{{Infobox ship image		 Ship image = Ship image size = Ship caption =
}}{{Infobox ship career		 Hide header = Ship name = Mr. Steven Ship owner = Ship operator = SeaTran Marine Ship registry = Ship route = Ship ordered = Ship builder = Gulf Craft Ship original cost = Ship yard number = Home port, Berth 240, Port of Los Angeles Ship way number = Ship laid down = Ship launched = Ship completed = Ship christened = November 2014 Ship acquired = Ship maiden voyage = Ship in service = Ship out of service =Call sign WDH8234|IMO 9744465|MMSI 338358000|USCG doc no. 1249191}} Ship fate = Ship status = Ship notes =
}}{{Infobox ship characteristics		 Hide header = Header caption = Ship class = Ship type = platform supply vessel496 cargo|96 gross|65 net}} Ship displacement =205|ft|m}}34|ft|m}} Ship height = Ship draught =5|ft|m}}13|ft|m}} Ship decks = Ship deck clearance = Ship ramps = Ship ice class = Ship sail plan = Ship power = 10,300 hp4 × Cat 3516C DH}} Ship speed = 32 kts Ship capacity = 84 (maximum) Ship crew =spec1|spec2|spec3}}
}}

Mr. Steven is a marine vessel being used as a platform for recovery of the SpaceX reusable rocket payload fairings. The ship is fitted with four large arms which support an elevated horizontal net, similar to a giant trampoline or trapeze net. It is named after Steven Miguez, the father of SeaTran CEO Blake J. Miguez.[1] The ship has been used for fairing recovery experiments on a number of occasions in 2018 and early 2019, but has not successfully caught a descending fairing {{asof|2019|01|lc=y}}.

Fairing reuse

{{main|SpaceX reusable launch system development program#Fairing reuse}}

As a part of the SES-10 mission in March 2017, SpaceX successfully performed a controlled landing of the payload fairing into the ocean for the first time. SpaceX was able to recover the fairing half from the water after it landed, aided by attitude-control thrusters and a steerable parachute, gently on water.{{r|sn20170330|verge20170330}} The company announced{{when|date=February 2019}} its intent to land the fairings on a dry flexible structure, jokingly described by Elon Musk as a "floating bouncy castle", with the goal of reusing the fairings.{{r|floridatoday_26216836069515264}}

The bouncy castle idea led to SpaceX contracting for a fast platform supply vessel named Mr. Steven which has had modifications to facilitate a large net being strung between long arms that extend considerably beyond the width of the ship. Mr. Steven is equipped with a dynamic positioning system and was first tested after the launch of the Paz satellite from Vandenberg Air Force Base in February 2017.[2][3] The test was not fully successful because the fairing missed the boat by a few hundred meters but landed safely in the water[4] before being recovered and taken back to port.{{r|nsf-20180225}} {{asof|2018|08}}, all four attempts by SpaceX in the first half of 2018 to land a fairing on the recovery ship failed, despite fitting Mr. Steven with larger nets before the July 2018 attempt.[5][6]

In October 2018, to practice recovery outside mission situations, SpaceX began to perform drop tests of a fairing half from a helicopter with Mr. Steven's below.[7]{{update after|2019|2|1}}

The cost of a fairing is about $6 million which accounts for 10 percent of overall launch costs.[8]

Modifications

In July 2018, Mr. Steven was upgraded to fit a broader net with an area of {{cvt|3700|m2|acres}}, four times the original net size.{{r|netSize}} The upgrade included fitting four new arms, which are each supported and positioned by two extendable shock-absorbing booms.{{r|teslaRati2}} Each arm can be removed and disassembled into six subsections.{{r|TeslaRati}} These four shock-absorbing arms replaced the previous rigid arms.

See also

  • Autonomous spaceport drone ship

References

1. ^{{cite web |last1=Wattles |first1=Jackie |title=SpaceX's latest launch and recovery attempt: We explain it all |url=https://money.cnn.com/2018/03/31/technology/spacex-fairing-recovery-explained/index.html |website=CNNMoney |accessdate=3 October 2018 |date=31 March 2018}}
2. ^{{cite news|last1=Etherington|first1=Darrell|title=SpaceX to use a net boat called ‘Mr. Steven’ to recover next rocket fairing|url=https://techcrunch.com/2018/02/20/spacex-to-use-a-net-boat-called-mr-steven-to-recover-next-rocket-fairing/|accessdate=February 20, 2018|work=TechCrunch|date=February 20, 2018|language=en}}
3. ^{{cite news|last1=Baylor|first1=Michael|title=SpaceX’s Mr. Steven, the FSV fairing catcher – NASASpaceFlight.com|url=https://www.nasaspaceflight.com/2018/02/spacexs-mr-steven-fsv-fairing-catcher/|accessdate=February 26, 2018|work=NASASpaceFlight.com|date=February 25, 2018}}
4. ^{{cite tweet |user=elonmusk |author-link=Elon Musk |number=966692641533390848 |date=22 Feb 2018 |title=Missed by a few hundred meters, but fairing landed intact in water. Should be able catch it with slightly bigger chutes to slow down descent. }}
5. ^{{cite web |last1=Bartels |first1=Meghan |title=SpaceX Lands Rocket in Harshest Conditions to Date and Attempts to Catch Fairing |url=https://www.space.com/41273-spacex-launch-iridium-satellites-harsh-weather.html |website=Space.com |publisher=Purch |accessdate=7 August 2018 |date=July 25, 2018}}
6. ^{{cite web |last1=Wall |first1=Mike |title=SpaceX Gives Nose-Cone-Catching Boat 'Mr. Steven' a Bigger Net |url=https://www.space.com/41168-spacex-boat-mr-steven-bigger-net.html |website=Space.com |publisher=Purch |accessdate=7 August 2018 |date=July 13, 2018}}
7. ^{{Cite web|url=https://www.teslarati.com/spacex-mr-steven-helicopter-drop-test-practice/|title=SpaceX's Mr. Steven returns with Falcon fairing half in net after drop test practice|website=www.teslarati.com|language=en-US|access-date=2018-10-12}}
8. ^{{cite web |last1=Clark |first1=Stephen |title=New photos illustrate progress in SpaceX’s fairing recovery attempts – Spaceflight Now |url=https://spaceflightnow.com/2018/06/01/new-photos-illustrate-progress-in-spacexs-fairing-recovery-attempts/ |website=spaceflightnow.com |publisher=Pole Star Publications Ltd |accessdate=7 August 2018 |date=June 1, 2018}}
9. ^{{cite news|url= http://www.floridatoday.com/story/tech/science/space/2017/03/31/things-we-learned-spacex-elon-musk-falcon9-reusability-kennedy-space-center-florida-ses10/99869966/ |title= Things we learned after SpaceX's historic Falcon 9 relaunch and landing |website= Florida Today |first= Emre |last= Kelly |date= 2017-03-31 |accessdate= 2017-04-01}}
10. ^{{cite news |last1=Lopatto |first1=Elizabeth |title=SpaceX even landed the nose cone from its historic used Falcon 9 rocket launch |url=https://www.theverge.com/2017/3/30/15132314/spacex-launch-fairing-landing-falcon-9-thruster-parachutes |accessdate=31 March 2017 |work=The Verge |date=30 March 2017}}
11. ^{{cite web |last1=Miley |first1=Jessica |title=SpaceX's Recovery Vessel 'Mr. Steven' Gets a Massive Net Upgrade |url=https://interestingengineering.com/spacexs-recovery-vessel-mr-steven-gets-a-massive-net-upgrade |website=Interesting Engineering |accessdate=3 October 2018 |date=18 July 2018}}
12. ^{{cite web |title=Mr. Steven |url=http://www.seatranmarine.com/vessels-1/mr-steven |website=www.seatranmarine.com |accessdate=3 October 2018}}
13. ^{{cite web |title=Mr. Steven |url=https://www.marinetraffic.com/en/ais/details/ships/shipid:3439091/mmsi:338358000/imo:9744465/vessel:MR_STEVEN |website=MarineTraffic |accessdate=3 October 2018}}
14. ^{{cite web |title=Vessel Documentation Query |url=https://www.st.nmfs.noaa.gov/pls/webpls/cgv_pkg.vessel_id_list?vessel_id_in=1249191 |website=www.st.nmfs.noaa.gov |accessdate=3 October 2018}}
15. ^{{cite web |last1=Ralph |first1=Eric |title=SpaceX's Falcon 9 fairing catcher Mr Steven preps for October recovery attempt |url=https://www.teslarati.com/spacex-mr-steven-arm-reattachment-falcon-fairing-catch/amp/ |website=www.teslarati.com |accessdate=3 October 2018 |date=1 October 2018}}
16. ^{{cite web |title=SpaceX fairing catcher Mr Steven armless once more for maintenance and upgrades |url=https://www.teslarati.com/spacex-fairing-catcher-mr-steven-armless-maintenance-upgrades/ |website=www.teslarati.com |accessdate=3 October 2018 |date=27 August 2018}}
[9][10][11][12][13][14][15][16]
}}

3 : Engineering projects|Maritime vessels related to spaceflight|SpaceX facilities
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