NASA/Lewis Research Center, 21000 Brookpark Road, Cleveland, OH 44135

28 -- AIR TURBINE AND CONTROLLER SOL 3-100879 DUE 052698 POC Audrey R. Gonzalez, Contracting Officer, Phone (216) 433-2131, Fax (216) 433-2480, Email Audrey.R.Gonzalez@lerc.nasa.gov WEB: Click here for the latest information about this notice, http://nais.nasa.gov/EPS/LeRC/date.html#3-100879. E-MAIL: Audrey R. Gonzalez, Audrey.R.Gonzalez@lerc.nasa.gov. THIS NOTICE CONSTITUTES AMENDMENT NO. 1 TO THE COMBINED SYNOPSIS/RFQ FOR "AIR TURBINE AND CONTROLLER". Companies shall acknowledge all amendment(s) in their quote. This notice serves as the official amendment to subject synopsis/RFQ and a written amendment will not be issued. The purpose of this amendment is to replace the previous specifications with the following: Requirement is for an air turbine with a control system capable of accelerating a 100lbm rotor to a maximum speed of 60000rpm and decelerating the rotor in as short of cycle time as possible. The total cycle time at 90psi supply air, with the cycle time being defined as the time required to accelerate the rotor from a low speed of 19000rpm to a maximum speed of 60000rpm and then decelerate back to 19000rpm shall be less than 5 minutes. -Air supply required at the control valve inlet shall not exceed 110psi. -Maximum air consumption shall be 600 SCFM. -A speed transducer shall be included. -The control system shall include a controller, servo-throttle valve, and solenoid valves along with all cabling between componenets. -The control system shall have the capability to be interfaced to a PC for all operator interfaces. No keypad or displays are required. -The control system shall include an overspeed shutdown and input circuitry to allow external test abort signals. -AC auxiliary relays shall be provided for control of external devices at selectable speeds. -The control system shall include programmable ramp rates and speed settings along with cycle programming capability to allow programming and automated unattended operation of at least 20,000 cycles. -The air turbine system shall include an oil mist lubrication system including all pumps, filters, and valves. -The air turbine system shall include a high-speed rotating shaft vacuum feedthru and seal system, with a 1x10(-5) cc/sec helium leak rate maximum, utilizeing a helium mass spectrometer. -The air turbine system shall include a shaft damper system and spindle. -The air turbine shall include an acoustic muffler on the turbine discharge. -The air turbine system and controller shall be fully documented with installation, operataion, and maintenance drawings and procedures. The due date for receipt of offers is extended to May 26, 1998. Companies shall provide the information stated in the synopsis/RFQ posted on the NASA Acquisition Internet Service (NAIS) on May 4, 1998. Documents related to this procurement are available over the Internet and are in Microsoft Office Suite (Word 6.0, Excel 5.0, or PowerPoint 4.0) format and reside on the World Wide Web (WWW) server which may be accessed using a WWW browser application. The WWW address or URL of the NASA/LeRC Business Opportunities home page is http://procurement.nasa.gov/EPS/LeRC/class.html. (0138)

Loren Data Corp. http://www.ld.com (SYN# 0225 19980520\28-0004.SOL)