Nozomi in perspective, Revisiting the causes of failure Options

[pandaneko]

http://www.mext.go.jp/b_menu/shingi/uchuu/...ts/04061101.pdf

Above pdf file will be translated for aspiring students in aeronautics, control engineering etc. so that in future lay people like me will be able to enjoy planetary scenes and events without worrying about failures.

The overall title is "Looking into the causes of failure and trying to find the right measures to take for the future with respect to the 18th scientific satellite (PLANET-B ) not inserted into Mars orbit as planned" and it is dated 21 May 2004.

This file is very much detailed at 1.1 megabytes and the number of pages is about 40, I think. In addition, I will be translating 3 more files after this particular file. They will be;

1. ISAS file with views and comments on the failure
2. Another ISAS file, a newsletter written out in a series of 4 individual letters.
3. JAXA file, which is a press release and it is a very concise document with just sufficient details.

Re concise link making I tried a few times, but I simply failed and all the links will be fully pasted out as required.

Pandaneko

[pandaneko]

http://www.mext.go.jp/b_menu/shingi/uchuu/...ts/04061101.pdf

above for ease of reference

Please note that in what follows and in all previous translations I am always translating non alphanumeric entries only.

page 56

Table II-2-4 LV2 action history (action refers to opening and closing of the valve, P)

(before translating elements of this table I will first translate what are seen below the table. They are):

Note: Circle: valve opening/closing by autonomous commands (note 1 (actually, I cannot find this Note a anywhere on this page, P))

Square: valve is opened/closed by a command sent manually in real time

*: valve mulfunctioning during TMI was the 42nd (6th after launch) after delivery by manufacturer and the valve function had been all normal before it

*: automated command function relating to OME firing had been confirmed by ground tests. it was also verified during delta V5 in orbit.

(now, table itself and I consider this table to be consisting of 5 majot columns and 4 major rows with subdivisions)

(first, headers in the leftmost column)

C1R1: Action timing

C1R2: ground tests

C1R3: launch

C1R4: after launch

(next, headers in the top row, from left to right)

C2R1: Number of actions

C2R1 divides into 2 subcolumns and the header entry in the left subcolumn is "close->open" and the header in the right subcolumn is "open->close"

C3R1: Operation status

Here again, this divides into 2 subcolumns. Left subcolumn says "Visibility" and the right subcolumn says "Automation".

C4R1: Judgement

C5R1: Notes

(These are the headers and before translating non alphanumeric entries I will spell out some of the dates entries below. Dates in Japanese are reveresd in order. They are YEAR.MONTH.DAY, in this order, and all in numbers. For example):

97.10.21-22 : 21 to 22 October (10th month), 1997
98.2.27-3.4: 27 February (2nd month) to 4 March (3rd month) 1998
98.12.10: 10 December (12th month) 1998

(now, translations)

C3R4 divides into 5 subrows and entries in the Visibility subcolumn from top to bottom are:

Visible
Visible
Visible
invisible (orange colour highlighted)
visible

Likewise Automation subcolumn entries from top to bottom are:

square
circle
square
circle (orange colour highlighted)
square

Entries in the judgement column (major column) C4 are all "normal" except the 2nd subrow from bottom which is "abnormal" and is orange colour highlighted.

There are 16 entries in succession in C5 from top to bottom minus one. They are:

R2: delivery inspection, domestic

R3: confirmation test after pipe welding

R4: air-tightness test 1, whole propulsion system

R5: air-tightness test 2, whole propulsion system

R6: function confirmation test

R7: overall test, propulsive function

R8: overall test, preperation for environment test

R9: overall test, environment test

R10: overall test, functional air-tightness confirmation test

R11: flight operation, air-tightness test

R12: flight operation, liquid injection and primary pressurising

R13: (launch)

R14: Delta V 1

R15: Delta V 5

R16: Delta V 8

R17: Delta V 9 (TMI) and this is orange colour highlighted.

end of page 56

P