Mission: Hayabusa 2 Options

[spdf]

JAXA wants to continue with Hayabusa 2. However there is/was a huge fight about the budget. Main problem was the budget for the launch vehicle. 2 months ago or so there was a report which said, that JAXA had to find another launch vehicle or the project gets cancelled. Now the Italian space agency played saviour and overed the VEGA. So finally we might see another Hayabusa in 2011.


It was mentioned here:
http://www.jspec.jaxa.jp/080110Final_IPEWG-ProgramBook.pdf

[Paolo]

a rather detailed description of PROCYON (in Japanese) is available here

[pandaneko]

a rather detailed description of PROCYON (in Japanese) is available here

What follows is the rest of my translation. P

Development teams

Joint project by JAXA (ISAS) and Tokyo University community

aiming at entirely new form of deep space exploration (ultra small deep space probe) by bringing together knowhows (ultra small satellite technology/deep space probe technology)

(System: Univ. Tokyo/ISAS)
(Ground operation: ISAS)　　　　　　　　　　　


Propulsion system: Univ. Tokyo/ISAS

SAP opening: Nihon Univ.

Mission system: Meisei Univ./Univ. Tokyo

Science instrument: Rikkyo Univ.

Comms. : ISAS

DH system: Tokyo Science Univ.

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Development schedule

Flight model of each device is currently being manufactured in time for flight model integration in April 2014

Nearer events:

System structure model/thermal model testing (mid Jan. to Feb.)
Compatibility testing Usuda and Uchinoura ground stations (mid to end Feb.)

(what follows is the translation of characters inside the chart)

The character above 7 8 9 10 11 12 1 2 3 refers to fiscal 2013 and the numbers correspond to July (7), August, September up to March (3)

The character above 4 5 6 7 8 9 10 1112 refers to fiscal 2014 and the numbers correspond to April(4), May, up to December (12)

(Hereafter the chart is regarded as a matrix and from left and from topwise:)

(C1:R1) :system
(C1:R2): device
(C2:R1): design
(C2:R2): tests
(C2:R3): newly developped devices
(C2:R4): devices already developped
(C4,5,6:R1): system design
(C5,6,7,8:R3): BBM/EM manufacturing/test
(C8,9,10,11:R3): FM manufacturing （some devices）
(C5,6,7,8,9:R4): FM manufacturing/environment test （some devices）

(and finally, diagonally across the bulk of chart from top left to bottom righ)

STM/TTM test
Usuda/Uchinoura compatibility test
prior compatibility test
all devices integration test
final overall test
margin
launch site work/loading
launch (December 2014)


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Summary

• Significance and possibility of ultra minitualisation of deep space probes

– Minitualisation/ultra minitualisation is an important direction to take in order to carry out low cost and frequent science missions (as stated in Space Science Roadmap)
– What is required is not a simple minitualisation of mission and system scales, thereby making compromises in the mission results
– Ultra minitualised satellite industry has been active at innovation by introducing advanced technologies available in private industries (by improving on introduction methods), thereby making it possible to produce light weight, small, and low cost satellites with high capabilities
– Other component technologies are increasingly becoming available in order to achieve ultra minitualisation of deep space probes
– Epsilon+4th satge may be able to send ultra miniture probes into orbits of Mars and beyond re. If increased from 50kg to 100kg they are still sufficiently light for dual (tandem) probing missions．

• PROCYON: 50kg class ultra small engineering test deep space probe

– Verification of ultra small deep space probe bus system and ultra close and high speed flyby approach to asteroid
– Collaboration between university teams and ISAS/JAX with a view to achieving new form of deep space exploration
– Piggy back launch on Hayabusa 2 is expected in December 2014

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