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David
Joined: 20 Oct 2000
Posts: 1381
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NASA spheres
 Thu Jun 14, 2001 3:59 pm
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Good morning, afternoon, evening all.
I was cruising NASA this a.m. on one of their tech sites. In the search engine I typed: UAV SPHERES and recieved five hits.
The first two were: TEST AEROSOL GENERATOR and
TEST AEROSOL GENERATOR FOR PARTICLE COUNTING.
Thats the good part.
The bad part is I tried to access this info.
After the third attempt, my puter froze tight. It's taken some time to get free and running again. WHEW! This is a need to know site, be careful.
http://nasatechnology.com/search_action.asp?ct=hottech&c1=%24contents&q1=uav+spheres&x=57&y=13
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LWR
Joined: 25 Apr 2001
Posts: 224
Location: Menlo Park, Ca, USA |
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Thu Jun 14, 2001 4:03 pm
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That site worked fine for me. You need Adobe Acrobat to read the dox. |
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David
Joined: 20 Oct 2000
Posts: 1381
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Thu Jun 14, 2001 4:05 pm
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I have Adobe. |
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Lulu
Joined: 22 Dec 2000
Posts: 2501
Location: right here |
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Thu Jun 14, 2001 4:17 pm
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Worked ok for me as well David ~ no freeze-ups. Thanks for the link! |
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David
Joined: 20 Oct 2000
Posts: 1381
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Thu Jun 14, 2001 4:19 pm
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When you click on the first or second title, does it ask for password and user name?? It does for me every time. |
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amber
Joined: 17 May 2001
Posts: 445
Location: uk |
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Thu Jun 14, 2001 4:25 pm
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Yes it does David |
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David
Joined: 20 Oct 2000
Posts: 1381
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Thu Jun 14, 2001 4:31 pm
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I guess what Iam asking is Can anyone read the text. I know the site is open but how about the text for the spheres. LWR?? |
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Lulu
Joined: 22 Dec 2000
Posts: 2501
Location: right here |
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Thu Jun 14, 2001 4:33 pm
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Me three David. When I tried to access they asked if I was an American citizen and I checked "no" I could go no further, but when I checked "yes" well the door was opened. Cept I'm Canadian, so it's up to one of you to get in the door. |
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LWR
Joined: 25 Apr 2001
Posts: 224
Location: Menlo Park, Ca, USA |
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Thu Jun 14, 2001 4:40 pm
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National Aeronautics and Space Administration
John F. Kennedy Space Center, FL Sensors/
Instrumentation
Technology Opportunity
Test Aerosol Generator (TAG)
The National Aeronautics and Space Administration
(NASA) seeks to transfer the NASA-developed
Test Aerosol Generator (TAG) technology to private
industry for commercial applications. This technology
was developed for use in calibrating optical particle counter
(OPC) equipment used in cleanrooms throughout the
John F. Kennedy Space Center (KSC) in Florida.
A tabletop Test Aerosol Generator has been designed,
developed, and fabricated at KSC. The unit, as packaged,
Potential Commercial Uses
Calibration of optical particle counters in semiconductor,
computer, aerospace, and pharmaceutical cleanrooms
Benefits
Inexpensive to construct
Highly reliable and easy to operate
is portable and the size of a suitcase. It produces a
stable aerosol sample stream of particles in sizes from 7.0
microns to smaller than 0.5 micron.
This technology will allow various users of optical particle
counters to perform calibrations for particle size and
verification of concentration readings. This ensures more
accurate instrument readings.
National Aeronautics and Space Administration
John F. Kennedy Space Center, FL
The United States Government does not assume any liability resulting from use of this information and does not represent or warrant that use of the information will be free
from privately owned rights. In addition, the United States Government does not endorse any commercial product, process, or activity identified in this publication.
Can produce a wide range of particle sizes
Tremendous cost savings to companies that use in-house calibration
of OPCs
Delivers consistent and more reliable results than current technology,
especially in the larger particles sizes (5 to 7 ΅m)
The Technology
For proper calibration of a particle counter, it is crucial that the
technician performing the calibration have a device capable of
delivering a clean stream of particles to the counter. External
contamination or nonuniform particle sizes will greatly complicate
and compromise the quality of the calibration task. Particle
counter calibration consists of setting a detect/no detect threshold
and assuming that 100 percent of the particles are counted. This
does not address calibrating the particle counter for actual particle
counts. The uniform, stable flow provided by the TAG
helps to alleviate this problem by allowing for better correlation
between the particle counter being calibrated and the reference
counter.
The TAGs nebulizer contains a very highly purified liquid and
known quantities of polystyrene latex (PSL) spheres. The fog
generated by the nebulizer proceeds to the drying plenum where
it travels down the plenum, achieving a laminar flow by the
time it reaches the end. The liquid droplets dry up enroute,
leaving only PSL spheres which are delivered via an isokinetic
sampling tube to the particle counter being calibrated. The
pertinent operational parameters are the amount of air supplied to
the nebulizer to generate the fog, the amount of air delivered to
the plenum to dry the fog, and the amount and size of the PSL
spheres added to the liquid reservoir. The expected concentration
of the spheres is known since the number of spheres in the
water is known as their rate of insertion into the TAG device.
Options for Commercialization
This technology opportunity is part of the NASA Technology
Transfer Program. The program seeks to stimulate development
of commercial applications from NASA-developed technology.
This technology is available at no cost to U.S. companies and
U.S. citizens with a U.S. mailing address.
8/00
Contact
If your company is interested in the Test Aerosol Generator
(TAG) technology or if you desire additional information,
please reference case no. KSC-11701 and contact:
National Technology Transfer Center
Marketing Department
316 Washington Ave
Wheeling WV 26003
800-678-6882
hottechnologies@nttc.edu
Commercialization Checklist
Patent Pending
U.S. Patent No.
Copyrighted
Available to License
4 Available for no cost transfer
Seeking industry partner for further co-
development |
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LWR
Joined: 25 Apr 2001
Posts: 224
Location: Menlo Park, Ca, USA |
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Thu Jun 14, 2001 4:43 pm
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This was the first link. I did not choose to sign in and read the 2nd link. It can be copied and posted here by anyone willing to sign up. I do not do that sort of thing. |
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amber
Joined: 17 May 2001
Posts: 445
Location: uk |
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Thu Jun 14, 2001 4:44 pm
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Sorry to appear stupid but in layman's terms this is what?  |
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LWR
Joined: 25 Apr 2001
Posts: 224
Location: Menlo Park, Ca, USA |
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Thu Jun 14, 2001 4:44 pm
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Or you can click the 'I'm interested' tag and they will mail it to you. |
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David
Joined: 20 Oct 2000
Posts: 1381
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Thu Jun 14, 2001 4:57 pm
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Thank you LWR. I also do not want to give them anymore infor than they now possess about me. I do find it interesting that this device is listed under UAV's in their search engine. Thank you Lulu.
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