NASA, George C. Marshall Space Flight Center, Procurement Office, Marshall Space Flight Center, AL 35812

66 -- HELIOSTAT SUPPORT STRUCTURE SOL 8-P-5-02-80064 POC Contact Teresa A. Foley, GP22C/Contracting Officer, 205-544-0335 NASA/MSFC plans to issue a Request for Quotation (RFQ) to procure a support structure for a heliostat -- The following are some of the design requirements -- MIRROR SUPPORT STRUCTURE - The support structure must be capable of supporting and controlling mirror modules with a total size of 24 feet x 20 feet, and weigh a minimum of 2,000 lbs -- The structural stiffness of the support shall minimize mirror deflections caused by mirror movement and winds -- The mirror cannot move more than 3 milliradians at wind speeds of 10 mph -- The structure shall withstand total wind loads of 70 mph with mirror modules attached -- DUAL AXIS GEAR DRIVE - A dual axis gear drive shall be provided to allow the mirror to be moved to a parallel and a vertical position with respect to the ground -- Two-stage gear trains shall be provided for tracking the sun in both azimuth and elevation -- No backdrive is required -- The positioning accuracy of 1 milliradian is required -- CONTROL SYSTEM - The control software shall provide open loop sun tracking (year-round in Huntsville, AL) -- Software shall provide position status and allow independent positioning -- The software shall determine the difference between the actual mirror position and the calculated position, and make necessary corrections -- TRACKER - A tracker shall be used to determine the mirror's actual position -- DRIVER - Control electronics with standard 120 VAC drive motors, and limit switches shall be provided -- Onboard electronics using a serial link shall be provided to interface with a 80486 PC computer -- Complete specifications will be included in the RFQ -- This procurement is being conducted under the Simplified Acquisition Threshold (SAT) portion of the Federal Acquisition Streamlining Act (FASA) -- Copies of the RFQ are available by downloading from the Internet -- Transmission by facsimile to 205-544-0335 or by Internet e- mail to teresa.foley@msfc.nasa.gov is acceptable -- The RFQ will be posted on or about 15 days after publication of this notice in the Commerce Business Daily (CBD) -- The RFQ will have a 15 day response period -- This procurement is a total small business set-aside -- No ard copies of the solicitation will be available -- The solicitation and any related documents to this procurement will be available only over the Internet -- These documents will be in ASCII format and reside on a World-Wide Web (WWW) server, which may be accessed using client browsers, such as, MOSAIC -- The WWW address, or URL, of the MSFC Procurement home page is: ''http://procure.msfc.nasa.gov''. (0265)

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