ae JOHNSTON ATOLL SCIENTIFIC F&S NO. TITLE USER STRUCTURE/FACILITY NO. 01126 TC Low Level Wind System - Subtask A946 SCIENTIFIC STATION NO. Tower Nos. 1, 2b, 3, Boo 91-8-1 thru 91-8-5 incl. 4 and 5 FUNDING AGENCY DASA / RDT&E EAO 1106 4101-61 JTF -8/ RDT&E CRO 68-15 ($000) PRE-GO . ENGR FY 69% POST-GO Estimate 10.0 TOTAL 10.0 PROC CONST 53.7 FOD TOTAL FURN 63.7 TO BE DETERMINED 53.7 63.7 FY 1969 ENGINEERING Design of Tower Nos. 1, 3 and 4 is complete. Nos. 2b and 5 is in progress. Drawings: Design of Tower 91-064~-71 91-079-W98 and W99 91-086-S4, S6, S7 and S8 91-086-E2 91-086-C2 91-086-Wl PROCUREMENT In progress. Tower Nos. 2b and 3 (90-ft. High) and Tower No. 4 (85-ft. high) have been procured and will be fabricated from portions of a 200-ft. self-supporting tower and a 200-ft. guyed tower which were originally purchased for the Meteorological Tower (F&S No. 01119). CONSTRUCTION The Low Level Wind System will provide the MIGHTY SKY program with continuous low level wind data at strategic locations on Johnston Island. The system will consist of five towers on which wind speed and direction sensors will be mounted. Tower No. 1 (the existing EG&G 300-ft. tower) will be structurally modified and will be instrumented with TC furnished wind sensors at the 80-ft., 145-ft. and 280-ft. levels. Tower No. 3 (90-ft. tower) will be fabricated and erected at coordinates N 196, 840 and E 197, 135. TC furnished instruments will be mounted on Tower No. 3 at the 12-ft., 22.5-ft., 43-ft. and 80-ft. levels. A Sandia furnished 3-ft. diameter radome covered parabolic dish will be mounted at the 90-ft. level of Tower No. 3. POST-GO PROCUREMENT To be accomplished. 1-104 VOLI