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Spartnik - Team Spartnik
Spartnik Cleanroom

Also, download and read:
cleanroom final design review(.pdf format)

THIS YEAR'S TEAM:
Team Lead
Carl Strombom - Industry Mentor

System Status: April 2001

The Cleanroom is in good operational order. We have not replaced the plastic sheeting as of yet, since cost is a factor. The cleanroom is up to industry standards, and the HEPA filters are working properly. When the budget allows or when a supplier can make available plastic at a price that the project can afford, the clean room subsystem will move forward with plastic walls. We have 3 students that have taken electro static discharge (ESD) test and are capable of working on SPARTNIK with in the cleanroon.

 

System Status: June 2000

The cleanroom is completed and working well. We are looking in to replacing the plastic sheets that make up the walls of the cleanroom, with clear Plexiglas or Lexan. We would like clear walls so outside observers can view Spartnik with ease.

 

System Status: May 2000

Final preparations are underway for the return of Spartnik's shell from Lockheed. We are currently making sure that the cleanroom is as clean as possible, so when Spartnik's shell returns, we can keep the applied solar cells as contaminant-free as possible. Now we will finally begin the integration procedures.

 

System Status: April 2000

We met with a representative from VWR Scientific Products who helped us select the supplies we need for the cleanroom. With the representative's help we were able to obtain the best possible price for the products we were looking for. The representative placed our order, and most of the supplies arrived a couple of weeks later. However, the caps and gowns are still on back order. We hope that they will arrive before Spartnik's shell, +Z, and -Z plates arrive back from Lockheed.

 

System Status: March 2000

We are currently searching for reasonably priced cleanroom supplies such as gowns, caps, gloves, etc. We are also in the process of determining the cleanroom's class rating.

Purpose

The purpose of the cleanroom is to assemble the Spartnik microsatellite in a near contaminate-free environment. There are two main reasons for integrating Spartnik in a cleanroom. First, Spartnik's optical system must remain as contaminate-free as possible. The Optical equipment assembly requires a Class 100 environment or greater. Second, Spartnik must not contaminate the launch vehicle or any other payload aboard the launch vehicle.

 

Design

Three laminar flow HEPA filters were mounted on C-frames. Moreover, the walls of plastic were built to enclose the exit-flow filters and a working area of approximately 110 square feet. These walls allow six inches of space above the floor. Air from the surrounding room is drawn in through the intake filters where suspended particles are removed, and then exhausted into the enclosed cleanroom. As air enters the cleanroom, air is forced out along the base of the walls. This airflow creates positive-pressure inside the cleanroom, so that no dust particles can enter the cleanroom from the surrounding environment.


 

Construction

The HEPA filters were mounted on top of C-frames, and placed in a corner of San José State University's College of Engineering Space Subsytems Laboratory. The filters and C-frames form an "L" shape. The plastic forming the walls and the ceiling were attached to the filters by velcro-tape and magnets. The aluminum frames of two room dividers were hinged to the C-frames in order to enclose the "L" shape. Castors support the opposite side of the aluminum frames. Again, using velcro-tape and magnets, more plastic was attached to the aluminum frames-thus completely enclosing an area of approximately 110 square feet.

cleanroom7thum.jpg

 

Testing

While the HEPA filters are on, the plastic walls of the cleanroom bulge outward-proving that there is positive pressure inside the cleanroom. So no dust contaminates can enter the cleanroom while the filters are on.

 

Rules

  1. Only members of the Integration & Manufacturing and Cleanroom subsystems (and the systems engineers) are allowed to work in the cleanroom.
  2. All personnel working in the cleanroom must fill out the sign in/out sheet (name, time in, time out, task(s) performed, equipment signed out-if applicable).
  3. Bunny suits, booties, gloves, and masks(?) must be worn inside the cleanroom at all times. (Please wipe your feet on the mat before donning the booties.)
  4. Please keep the door closed at all times.
  5. Do not turn off the hoods, but please remember to turn off the hood lights before leaving.
  6. No matter how hot you think you are, keep the windows closed at all times. If you have to take a break for a few minutes, do so. The windows allow a lot of dust to enter room 236-which defeats the purpose of having a cleanroom.
  7. Due to the limited space, a maximum of four people will be allowed into the cleanroom at any given time.
  8. Room 236 must be cleaned at least once every two weeks in order to minimize the level of contaminants entering the cleanroom. (Please be sure to include this information in the cleanroom log.)
  9. Remember to reseal every piece of hardware, and if you are removing anything, include this information in the cleanroom log.

San Josť State University
Mechanical and Aerospace Engineering Department
One Washington Square
San Josť, CA 95192-0087
Last modified: May 11, 2001

San Jose State University

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