Coastal Systems Station, Dahlgren Division, NSWC, Panama City, FL 32407-7001

20 -- 150 VOLT DC BRUSHLESS UNDERWATER PROPULSION MOTORS SOL N61331-95-R-0032 DUE 042695 POC Phillip Morris, Contract Specialist, (904)235-5387 Carol A. Dreger, Contracting Officer, (904)234-4863. The Naval Surface Warfare Center, Dahlgren Division, Coastal Systems Station, Panama City, Florida, is soliciting proposals for a fixed price contract that provides the Navy with 150 volt DC brushless underwater propulsion motors. Approximately five to six motors will be acquired under the base contract with options for approximately 15 to 16 additional motors. The performance and design requirements are as follows: (a) Extremely quite underwater operation under all operation conditions. (b) Sixteen horsepower (HP) output at 225 revolultions per minute (RPM) with 140 volt input. (c) Eighty percent efficiency at 8 HP, 175 RPM, in 90 degrees Fahrenheit (F) water. (d) Capable of continuous duty at 10 HP, 210 RPM in 95 degree F stagnant water. (e) Continuously variable speed from full reverse to full forward. (f) Operate on input voltage down to 100 volts DC. (g) Shall provide total electrical redundancy (i.e. a single failure shall result in no less than 50 percent available power). (h) Battery bus shall be totally isolated from case ground and shall have insulation resistance of 1 megohms between either of the input pins and the case when measured with a 500 volt megger. No damage to the motor shall result from this test. (i) All internally required voltages for operation and control shall be generated from the propulsion battery bus. (j) Positive means shall be provided to ensure that hazardous voltages are not present on the motor's battery bus connector pins when the connector is not mated. (k) Motor shall exhibit zero power draw when connected to the propulsion battery bus and not providing propulsion. (l) Pulse width modulation shall be at 22 kilohertz or greater. (m) Motor shall provide for fault detection, current indicator, voltage indicator, ground fault indication, shaft RPM, fault indication, fault override, over temperature indication, and necessary control inputs. (n) Motor shall weigh less than 275 pounds. (o) Motor is designed to withstand a 20G shock, half sine wave pulse, 10 millisecond duration. (p) Motor shall withstand the vibration test method 514.4, figures 1, 2, and 3 of MIL-STD-810E. The motors must be manufactured to a set of detailed production drawings. Some components detailed in the drawings such as the rotor, stator, and amplifiers are source controlled to Motion Control Systems, Inc. of Newbern, VA. Other components such as the shaft seal and vacuum relays are source controlled to other manufacturers. Fax or written requests only will be accepted. The fax number for requests is (904)234-4251. No telephone requests will be accepted. (0068)

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