Space and Naval Warfare Systems Command, 4301 Pacific Highway, San Diego, CA 92110-3127

20 -- GYROCOMPASS SYSTEM SIC 3812 SOL N00039-00-R-2210 DUE 041700 POC Barbara Morden (619) 524-7142 WEB: SPAWAR web page, www.spawar.navy.mil. E-MAIL: to the contract specialist, mordenb@spawar.navy.mil. As a result of questions from industry, the statement of work and the system minimum technical requirements have changed from that in SBD submission 426396. This statement of work and minimum technical requirements replace the earlier ones in their entirety. All questions asked and answers given can be accessed at www.spawar.navy.mil (see original notice for further directions). Statement of work: Surveillance Towed Array Sensor System (SURTASS) ships are currently equipped with a Litton sperry Marine MK-29 Gyrocompass to provide the Satellite Communication (SATCOM)Super High Frequency (SHF), Ultra High Frequency (UHF), and International Maritime Satellite (INMARSAT) anatennas with vital positioning information as the antennas search and lock onto a satellite. The gyrocompass is housed in a shelterd marine environment and provides signals to the antennas to compensate for ship motion, thus keeping the antenna aligned properly. In addition, the gyrocompass provides heading, and pitch and roll data, to other mission equipment, including a backup indicator in the bridge console. All outputs of the gyrocompass are fed into and distributed by the Gyro Distribution Unit (GDU). due to increases in Total Cost of Ownership of the MK-29; (age and low mean time between failure (MTBF)), the Navy requires a commercial off the shelf (COTS) replacement. The Gyrocompass will provide outputs to the SHF, UHF SATCOM and INMARSAT as primary functions. The existing MK-29 gyrocompass does not determine position, thus, that function is not necessary in the replacement system. The existing MK29 installations were modified to accept an analog speed input from the speed log. This modification was necessary because no synchro output from the speed log source was available. The Doppler speed log outputs analog data at +0.10 vdc/kt. The currently used the gyro distribution unit, synchro signal amplifiers, fuse boxes, and all external control/display units will remain on board and used in the over all system. Summary information: The MK29 provides information inputs to the following:The SURTASS system (WSC-3/6 antennas), A synchro repeater in the pilot house, Helicopter landing equipment above the helicopter deck. (Japanese vessels only), Solar tracker for natural lighting. (Japanese vessels only). The Gyrocompass System Minimum Requirements are as follows: a. Mean Time Between Failure: = 10,000 hrs minimum. Failure is characterized by the inability of the candidate system to provide output at the accuracy levels identified below, and whenever an internal failure occurs which causes the output to cease for any time interval; b. Accuracy: Heading: +/- 1.0 degree secant latitude Pitch/Roll Angle: +/- 1.0 degree; c. Inputs, Available for use: Synchronous Signal Reference 115 VAC, 400 Hz, 1 phase, 2 wire Non -synchronous Log water Speed, 0.1 VDC/Kt; d. Outputs/Interfaces: Heading: 1x and 36x speed Synchronous, 400 Hz, 90V (line to line), 400ma/leg. 0.9 Power factor minimum. Roll: 2x and 36x speed Synchronous, 400 Hz, 90V (line to line), 100ma/leg, 0.9 Power factor minimum. Pitch: 2x and 36x speed Synchronous, 400 Hz, 90V (line to line), 100ma/leg, 0.9 Power factor minimum. The synchronous outputs are required. The Government does desire digital RS-232 or RS-422 output in addition to the synchronous outputs. The digital output is desired but not required; e. Power: 115VAC, 400Hz three phase ship's power (delta), NTE 200 W continuous or 115VAC, 60 Hz, three phase ship's power (delta), NTE 200 W continuous or DC power (NTE 28 VDC, 10 Amps); f. Alarms: Summary fault and power fault outputs are desired but not required; g. Control and Display: The system shall include a control and display unit (CDU) on the equipment that allows operation by ship's force. An operator must be able to power up/down the system, verify system status, control system operation, monitor gyrocompass outputs, and troubleshoot system failures from the CDU. As a minimum, monitored data fields shall include: roll, pitch, and heading; h. Environment: 1. Shock & Vibration: Unit must be designed to operate in a sheltered marine shipboard ocean environment and still meet all minimum accuracy and reliability requirements. 2. Temperature: 32 degrees F to 120 degrees F (operational) minimum. 3. Humidity: 90% Relative (operational) minimum. 4. Electromagnetic Interference/Radio Frequency Interference: Unit must be designed to operate without causing interference to any shipboard equipment. (Use MIL-STD-461-D as guidance only). Vender to provide information to demonstrate that the proposed gyrocompass system will maintain reliability under all environmental conditions; i. Physical: Weight: Not to exceed 707 lbs, Size: Not to exceed 72"(H) x 24"(W) x 30"(D); j. Warranty: Warranty shall begin when the Government installs the unit and last at least one year. All units will be installed within 6 months of delivery. The installation is not a part of this procurement. All other terms and conditions of CBD notice #426396 and 426416 remain unchanged. Posted 03/30/00 (W-SN439898). (0090)

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