[FPSPACE] It's Noisy Out In Space, NASA WATCH,

james oberg joberg@houston.rr.com
Fri, 27 Jun 2003 11:37:16 -0500


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It's Noisy Out In Space, NASA WATCH,=20
Keith Cowing  //  Thursday, June 26, 2003=20
http://www.spaceref.com/news/viewnews.html?id=3D831

=20

    These images (click on image to see original photo) of the =
Expedition 7 Crew [Yuri Malenchenko - R, Ed Lu - L], taken in early June =
2003, clearly show both crew members in the ISS Service Module wearing =
ear plugs. These ear plugs are seen in many other images. It would seem =
that there is still a noise issue aboard the International Space =
Station.

=20

This is not a new issue by any means. To wit, a historical perspective:

    ISS On-Orbit Status 1 Apr 2003=20

"Before breakfast, FE-2/SO Don Pettit unstowed and prepared the personal =
acoustic dosimeters, including changing the batteries, to be carried by =
each crewmember for the periodic noise dosimetry. [Tonight, after about =
15 hours of measurements, data from each dosimeter will be recorded and =
the hardware power-cycled.]"

    ISS On-Orbit Status 31 Dec 2002=20

"After wake-up at 1:00am EST and the daily morning inspection, CDR Ken =
Bowersox set up the SLM (sound level measurement) audio dosimeters for =
another noise survey in the station, tracking today's crew ops =
acoustically."=20

    ISS On-Orbit Status 24 Dec 2002=20

"At various times during the day, FE-1 Nikolai Budarin conducted =
acoustic measurements in the station to characterize acoustic noise in =
SM crew cabins;  Results of these measurement results are required to =
develop noise countermeasures for the crew quarters. [Acoustic survey =
was taken with nominally installed cabin doors open and closed, and with =
certain suspected sources of high noise in the cabins turned On and Off. =
Nikolai first installed cabin doors for the right and left crew =
quarters, then took measurements with the=20

Russian noise meter with various noise-generating systems On and Off, =
finally downloading the data to Laptop 3. Measurement conditions were: =
Only continuously functional on-board systems were to be On, no =
intermittent noise, including conversation, short noise generated by =
Vozdukh scrubbing system valve state changes. For in-cabin measurements =
the microphone was to be positioned 1.5 m off the floor in the cabin =
center. The crewmember was to be in the cabin as far as possible from =
the microphone, maintaining the same body position throughout the series =
of measurements. Microphone not in the way of heavy airflow.]"

    ISS On-Orbit Status 24 June 2002=20

"Treschev also spent about an hour in the SM taking noise level readings =
with the "Shumometer" sound level meter. [Purpose of the periodic =
activity is the characterization of the potential sources of excessive =
acoustic noise in the SM cabins and above the treadmill (ventilation =
fans located in the RO work compartment). Only the continuously running =
vehicle systems in operation are recorded, with a step-by-step =
deactivation of individual ventilation fans. Results of the sampling =
will be used in the development of noise reduction measures and in the =
validation of the ground acoustic testing of the main noise sources on =
RSC-Energia's SM simulator in KIS-416.]"

    ISS On-Orbit Status 25 Feb 2002

"Today's timeline called for OHA (on-orbit hearing assessment) by all =
three crewmembers, last time done two months ago. After Carl Walz set up =
the necessary equipment, the OHA acoustic countermeasure assessment was =
completed by Yuri, Dan and himself. For the periodic hearing tests, the =
crew is using=20

special EarQ software on their medical laptop, individually molded =
Prophonics ear plugs, Bose ANR (acoustic noise reduction) headsets, and =
a sound meter for background measurements."

    22 August 2000: ISS Change Request CR3361, "Exception to US Lab =
Acoustics NC50 Requirement", ISS Program Office (Adobe Acrobat)

    Editor's note: Last Spring, during testing at KSC, the US Lab Module =
"Destiny" was found to be in violation of ISS program noise =
requirements. The noise level inside the US Lab exceeds the "NC-50" =
noise requirement (a weighted-average thing that comes out roughly 50 =
dB). A requirements change, CR3361, was=20

promptly generated to relax the requirement. The CR appears to be on a =
fast track to approval since the usual "Technical Coordination Meeting" =
that is held to discuss a proposed change has been "bypassed" because it =
has been "sufficiently coordinated with the affected parties."

    The rationale given for requesting acceptance of this Change Request =
is " The USL acoustic environment has been reduced during development by =
addition of mufflers, wrapping noise sources with quieting materials, =
lining rack interiors with foam, and close-outs of acoustical openings. =
Additional reduction of acoustical noise would result in unacceptable =
schedule delays and excessive cost. Program management has=20

indicated that additional quieting and operational constraints, if =
implemented, will be accomplished on-orbit.=20

    Noise levels higher than the specification are accepted based on =
short operational duration or crew operations. Detailed technical =
rationale is documented in NCR-ISS-5A-022, Stage 5A Integrated Acoustic =
Non-Compliance"

    Included in the Adobe Acrobat file are:=20

  CR3361, "Exception to US Lab Acoustics NC50 Requirement"=20

  The TCM bypass notification for CR3361=20

  An extract from SSP41162, the specification for the US segment of ISS, =
with: the noise specification for the US segment and the existing waiver =
for Node 1=20

  An extract from SSP50005B (Space Station Flight Crew Integration =
Standard), section 5 (Natural and Induced Environments) with the NC-50 =
requirement and associated weighting curve).=20

    Node 1 encountered the same situation. After testing, Node 1 was =
noisier than the requirement, but it was launched anyway.=20

    This is apparently symptomatic of what some people in the ISS =
program refer to as an "overall ISS bottom-up engineering philosophy", =
which basically says "Boeing builds what it builds, and if it doesn't =
meet the requirements (part of its contract with NASA), we'll change the =
requirements."

    This, of course, can also be applied to Russia.

7 June 2000: ECP BHE3361 (SS2914) Rev: - Exception to US Lab Acoustics =
NC50 Requirement, NASA

    Editor's note: This CR (Change Request) is working its way through =
the system. It would seem that the Service Module is not the only ISS =
element with partially addressed noise problems - problems that may only =
be resolved after the element is in orbit.

    "Rationale: The USL acoustic environment has been reduced during =
development by addition of mufflers, wrapping noise sources with =
quieting materials, lining rack interiors with foam, and close-outs of =
acoustical openings. Additional reduction of acoustical noise would =
result in unacceptable schedule delays and excessive cost. Program =
management has indicated that additional quieting and operational =
constraints, if implemented, will be accomplished on orbit."

    5 June 2000: ISS Program Risk Summaries for Various Russian Elements =
and Systems

    Title: Russian Segment Acoustic Noise Violations //   Number: 3774

    Description: Russian Segment (FGB and Service Module) exceeds noise =
requirements

    Full Text of Risk Summary: [Word] [Acrobat]

"(1) 2A.2 and 3A provides for relatively short noise exposure in the FGB =
(3A Crew does not go into SM). Shuttle flight rules on Acoustics are =
applicable for 10 - 14 day missions, and therefore can be applied to the =
FGB Prior to permanent crew habitation. (2) Quieting provisions were =
installed in the FGB on 2A.1 lessening the acoustical levels. Following =
completion of the acoustics data assessments from 2A.1, additional noise =
abatement measures may be required."

=20

    5 June 2000: ISS Program Risk Summaries for Various Russian Elements =
and Systems

NASA Watch Note: The following ISS Program Risk Summaries describe some =
of the current technical risks associated with Russia's participation in =
the ISS program - and the methodical steps being taken to alleviate each =
of these problems. Each Risk Summary describes the problem and its =
potential impact on=20

the program and safety, a designated point of contact, a ROM (Rough =
Order of Magnitude) cost estimate, an estimated closure date, an =
Abatement Plan Overview, Closure / Acceptance Criteria, and a listing of =
major actions taken to date. Each report is presented here in Word and =
Adobe Acrobat formats.=20

    The sum of the listed ROM (Rough Order of Magnitude) costs for these =
7 risk summaries (several of them list no cost impacts), estimated when =
the summaries were first written, was $3.096 billion. These costs =
represent the threat to the ISS program in a worse case scenario if the =
issues remained unresolved. As these issues were pursued towards =
resolution, these estimated cost impacts decreased.

  Russian Segment Acoustic Noise Violations=20

  Soyuz Launch Vehicle Upgrade=20

  Progress Supportability=20

  Russian Windows=20

  SPP Berthing Feasibility=20

  SPP Schedule & Funding=20

  Depressurization of the Russian Segment=20

=20

=20


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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<META http-equiv=3DContent-Type content=3D"text/html; =
charset=3Dwindows-1252">
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<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>
<H1 style=3D"MARGIN: 0in 0in 0pt"><FONT face=3D"Times New Roman" =
size=3D3>It's Noisy=20
Out In Space, NASA WATCH, </FONT></H1>
<H1 style=3D"MARGIN: 0in 0in 0pt"><FONT face=3D"Times New Roman" =
size=3D3>Keith=20
Cowing<SPAN style=3D"mso-spacerun: yes">&nbsp; </SPAN>//<SPAN=20
style=3D"mso-spacerun: yes">&nbsp; </SPAN>Thursday, June 26, 2003 =
</FONT></H1>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><A=20
href=3D"http://www.spaceref.com/news/viewnews.html?id=3D831"><FONT=20
face=3D"Times New Roman"=20
size=3D3>http://www.spaceref.com/news/viewnews.html?id=3D831</FONT></A></=
P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><FONT size=3D3><FONT=20
face=3D"Times New Roman">&nbsp;<?xml:namespace prefix =3D o ns =3D=20
"urn:schemas-microsoft-com:office:office" =
/><o:p></o:p></FONT></FONT></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman"><SPAN style=3D"mso-spacerun: =
yes">&nbsp;&nbsp;&nbsp;=20
</SPAN>These images (click on image to see original photo) of the =
Expedition 7=20
Crew [Yuri Malenchenko - R, Ed Lu - L], taken in early June 2003, =
clearly show=20
both crew members in the ISS Service Module wearing ear plugs. These ear =
plugs=20
are seen in many other images. It would seem that there is still a noise =
issue=20
aboard the International Space Station.<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman">&nbsp;<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman">This is not a new issue by any means. To wit, a =

historical perspective:<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman"><SPAN style=3D"mso-spacerun: yes">&nbsp;&nbsp; =
</SPAN><SPAN=20
style=3D"mso-spacerun: yes">&nbsp;</SPAN>ISS On-Orbit Status 1 Apr 2003=20
<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman">"Before breakfast, FE-2/SO Don Pettit unstowed =
and=20
prepared the personal acoustic dosimeters, including changing the =
batteries, to=20
be carried by each crewmember for the periodic noise dosimetry. =
[Tonight, after=20
about 15 hours of measurements, data from each dosimeter will be =
recorded and=20
the hardware power-cycled.]"<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman"><SPAN style=3D"mso-spacerun: =
yes">&nbsp;&nbsp;&nbsp;=20
</SPAN>ISS On-Orbit Status 31 Dec 2002 <o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman">"After wake-up at 1:00am EST and the daily =
morning=20
inspection, CDR Ken Bowersox set up the SLM (sound level measurement) =
audio=20
dosimeters for another noise survey in the station, tracking today's =
crew ops=20
acoustically." <o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman"><SPAN style=3D"mso-spacerun: =
yes">&nbsp;&nbsp;&nbsp;=20
</SPAN>ISS On-Orbit Status 24 Dec 2002 <o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman">"At various times during the day, FE-1 Nikolai =
Budarin=20
conducted acoustic measurements in the station to characterize acoustic =
noise in=20
SM crew cabins;<SPAN style=3D"mso-spacerun: yes">&nbsp; </SPAN>Results =
of these=20
measurement results are required to develop noise countermeasures for =
the crew=20
quarters. [Acoustic survey was taken with nominally installed cabin =
doors open=20
and closed, and with certain suspected sources of high noise in the =
cabins=20
turned On and Off. Nikolai first installed cabin doors for the right and =
left=20
crew quarters, then took measurements with the =
<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman">Russian noise meter with various =
noise-generating systems=20
On and Off, finally downloading the data to Laptop 3. Measurement =
conditions=20
were: Only continuously functional on-board systems were to be On, no=20
intermittent noise, including conversation, short noise generated by =
Vozdukh=20
scrubbing system valve state changes. For in-cabin measurements the =
microphone=20
was to be positioned 1.5 m off the floor in the cabin center. The =
crewmember was=20
to be in the cabin as far as possible from the microphone, maintaining =
the same=20
body position throughout the series of measurements. Microphone not in =
the way=20
of heavy airflow.]"<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman"><SPAN style=3D"mso-spacerun: =
yes">&nbsp;&nbsp;&nbsp;=20
</SPAN>ISS On-Orbit Status 24 June 2002 <o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman">"Treschev also spent about an hour in the SM =
taking noise=20
level readings with the "Shumometer" sound level meter. [Purpose of the =
periodic=20
activity is the characterization of the potential sources of excessive =
acoustic=20
noise in the SM cabins and above the treadmill (ventilation fans located =
in the=20
RO work compartment). Only the continuously running vehicle systems in =
operation=20
are recorded, with a step-by-step deactivation of individual ventilation =
fans.=20
Results of the sampling will be used in the development of noise =
reduction=20
measures and in the validation of the ground acoustic testing of the =
main noise=20
sources on RSC-Energia's SM simulator in =
KIS-416.]"<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman"><SPAN style=3D"mso-spacerun: =
yes">&nbsp;&nbsp;&nbsp;=20
</SPAN>ISS On-Orbit Status 25 Feb 2002<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman">"Today's timeline called for OHA (on-orbit =
hearing=20
assessment) by all three crewmembers, last time done two months ago. =
After Carl=20
Walz set up the necessary equipment, the OHA acoustic countermeasure =
assessment=20
was completed by Yuri, Dan and himself. For the periodic hearing tests, =
the crew=20
is using <o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman">special EarQ software on their medical laptop,=20
individually molded Prophonics ear plugs, Bose ANR (acoustic noise =
reduction)=20
headsets, and a sound meter for background=20
measurements."<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman"><SPAN style=3D"mso-spacerun: =
yes">&nbsp;&nbsp;&nbsp;=20
</SPAN>22 August 2000: ISS Change Request CR3361, "Exception to US Lab =
Acoustics=20
NC50 Requirement", ISS Program Office (Adobe=20
Acrobat)<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman"><SPAN style=3D"mso-spacerun: =
yes">&nbsp;&nbsp;&nbsp;=20
</SPAN>Editor's note: Last Spring, during testing at KSC, the US Lab =
Module=20
"Destiny" was found to be in violation of ISS program noise =
requirements. The=20
noise level inside the US Lab exceeds the "NC-50" noise requirement (a=20
weighted-average thing that comes out roughly 50 dB). A requirements =
change,=20
CR3361, was <o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman">promptly generated to relax the requirement. =
The CR=20
appears to be on a fast track to approval since the usual "Technical=20
Coordination Meeting" that is held to discuss a proposed change has been =

"bypassed" because it has been "sufficiently coordinated with the =
affected=20
parties."<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman"><SPAN style=3D"mso-spacerun: =
yes">&nbsp;&nbsp;&nbsp;=20
</SPAN>The rationale given for requesting acceptance of this Change =
Request is "=20
The USL acoustic environment has been reduced during development by =
addition of=20
mufflers, wrapping noise sources with quieting materials, lining rack =
interiors=20
with foam, and close-outs of acoustical openings. Additional reduction =
of=20
acoustical noise would result in unacceptable schedule delays and =
excessive=20
cost. Program management has <o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman">indicated that additional quieting and =
operational=20
constraints, if implemented, will be accomplished on-orbit.=20
<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman"><SPAN style=3D"mso-spacerun: =
yes">&nbsp;&nbsp;&nbsp;=20
</SPAN>Noise levels higher than the specification are accepted based on =
short=20
operational duration or crew operations. Detailed technical rationale is =

documented in NCR-ISS-5A-022, Stage 5A Integrated Acoustic=20
Non-Compliance"<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman"><SPAN style=3D"mso-spacerun: =
yes">&nbsp;&nbsp;&nbsp;=20
</SPAN>Included in the Adobe Acrobat file are: =
<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman"><SPAN style=3D"mso-spacerun: yes">&nbsp; =
</SPAN>CR3361,=20
"Exception to US Lab Acoustics NC50 Requirement" =
<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman"><SPAN style=3D"mso-spacerun: yes">&nbsp; =
</SPAN>The TCM=20
bypass notification for CR3361 <o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman"><SPAN style=3D"mso-spacerun: yes">&nbsp; =
</SPAN>An extract=20
from SSP41162, the specification for the US segment of ISS, with: the =
noise=20
specification for the US segment and the existing waiver for Node 1=20
<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman"><SPAN style=3D"mso-spacerun: yes">&nbsp; =
</SPAN>An extract=20
from SSP50005B (Space Station Flight Crew Integration Standard), section =
5=20
(Natural and Induced Environments) with the NC-50 requirement and =
associated=20
weighting curve). <o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman"><SPAN style=3D"mso-spacerun: =
yes">&nbsp;&nbsp;&nbsp;=20
</SPAN>Node 1 encountered the same situation. After testing, Node 1 was =
noisier=20
than the requirement, but it was launched anyway. =
<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman"><SPAN style=3D"mso-spacerun: =
yes">&nbsp;&nbsp;&nbsp;=20
</SPAN>This is apparently symptomatic of what some people in the ISS =
program=20
refer to as an "overall ISS bottom-up engineering philosophy", which =
basically=20
says "Boeing builds what it builds, and if it doesn't meet the =
requirements=20
(part of its contract with NASA), we'll change the=20
requirements."<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman"><SPAN style=3D"mso-spacerun: =
yes">&nbsp;&nbsp;&nbsp;=20
</SPAN>This, of course, can also be applied to=20
Russia.<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman">7 June 2000: ECP BHE3361 (SS2914) Rev: - =
Exception to US=20
Lab Acoustics NC50 Requirement, NASA<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman"><SPAN style=3D"mso-spacerun: =
yes">&nbsp;&nbsp;&nbsp;=20
</SPAN>Editor's note: This CR (Change Request) is working its way =
through the=20
system. It would seem that the Service Module is not the only ISS =
element with=20
partially addressed noise problems - problems that may only be resolved =
after=20
the element is in orbit.<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman"><SPAN style=3D"mso-spacerun: =
yes">&nbsp;&nbsp;&nbsp;=20
</SPAN>"Rationale: The USL acoustic environment has been reduced during=20
development by addition of mufflers, wrapping noise sources with =
quieting=20
materials, lining rack interiors with foam, and close-outs of acoustical =

openings. Additional reduction of acoustical noise would result in =
unacceptable=20
schedule delays and excessive cost. Program management has indicated =
that=20
additional quieting and operational constraints, if implemented, will be =

accomplished on orbit."<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman"><SPAN style=3D"mso-spacerun: =
yes">&nbsp;&nbsp;&nbsp;=20
</SPAN>5 June 2000: ISS Program Risk Summaries for Various Russian =
Elements and=20
Systems<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman"><SPAN style=3D"mso-spacerun: =
yes">&nbsp;&nbsp;&nbsp;=20
</SPAN>Title: Russian Segment Acoustic Noise Violations //<SPAN=20
style=3D"mso-spacerun: yes">&nbsp;&nbsp; </SPAN>Number:=20
3774<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman"><SPAN style=3D"mso-spacerun: =
yes">&nbsp;&nbsp;&nbsp;=20
</SPAN>Description: Russian Segment (FGB and Service Module) exceeds =
noise=20
requirements<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman"><SPAN style=3D"mso-spacerun: =
yes">&nbsp;&nbsp;&nbsp;=20
</SPAN>Full Text of Risk Summary: [Word] =
[Acrobat]<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman">"(1) 2A.2 and 3A provides for relatively short =
noise=20
exposure in the FGB (3A Crew does not go into SM). Shuttle flight rules =
on=20
Acoustics are applicable for 10 - 14 day missions, and therefore can be =
applied=20
to the FGB Prior to permanent crew habitation. (2) Quieting provisions =
were=20
installed in the FGB on 2A.1 lessening the acoustical levels. Following=20
completion of the acoustics data assessments from 2A.1, additional noise =

abatement measures may be required."<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman">&nbsp;<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman"><SPAN style=3D"mso-spacerun: =
yes">&nbsp;&nbsp;&nbsp;=20
</SPAN>5 June 2000: ISS Program Risk Summaries for Various Russian =
Elements and=20
Systems<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman">NASA Watch Note: The following ISS Program Risk =
Summaries=20
describe some of the current technical risks associated with Russia's=20
participation in the ISS program - and the methodical steps being taken =
to=20
alleviate each of these problems. Each Risk Summary describes the =
problem and=20
its potential impact on <o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman">the program and safety, a designated point of =
contact, a=20
ROM (Rough Order of Magnitude) cost estimate, an estimated closure date, =
an=20
Abatement Plan Overview, Closure / Acceptance Criteria, and a listing of =
major=20
actions taken to date. Each report is presented here in Word and Adobe =
Acrobat=20
formats. <o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman"><SPAN style=3D"mso-spacerun: =
yes">&nbsp;&nbsp;&nbsp;=20
</SPAN>The sum of the listed ROM (Rough Order of Magnitude) costs for =
these 7=20
risk summaries (several of them list no cost impacts), estimated when =
the=20
summaries were first written, was $3.096 billion. These costs represent =
the=20
threat to the ISS program in a worse case scenario if the issues =
remained=20
unresolved. As these issues were pursued towards resolution, these =
estimated=20
cost impacts decreased.<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman"><SPAN style=3D"mso-spacerun: yes">&nbsp; =
</SPAN>Russian=20
Segment Acoustic Noise Violations <o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman"><SPAN style=3D"mso-spacerun: yes">&nbsp; =
</SPAN>Soyuz=20
Launch Vehicle Upgrade <o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman"><SPAN style=3D"mso-spacerun: yes">&nbsp; =
</SPAN>Progress=20
Supportability <o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman"><SPAN style=3D"mso-spacerun: yes">&nbsp; =
</SPAN>Russian=20
Windows <o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman"><SPAN style=3D"mso-spacerun: yes">&nbsp; =
</SPAN>SPP=20
Berthing Feasibility <o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman"><SPAN style=3D"mso-spacerun: yes">&nbsp; =
</SPAN>SPP=20
Schedule &amp; Funding <o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman"><SPAN style=3D"mso-spacerun: yes">&nbsp;=20
</SPAN>Depressurization of the Russian Segment =
<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New Roman"><SPAN=20
style=3D"mso-spacerun: yes">&nbsp;</SPAN><o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0in 0in 0pt"><SPAN=20
style=3D"FONT-SIZE: 11pt; mso-bidi-font-size: 10.0pt; =
mso-fareast-font-family: 'MS Mincho'"><FONT=20
face=3D"Times New =
Roman">&nbsp;<o:p></o:p></FONT></SPAN></P></FONT></DIV></BODY></HTML>

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