Accession Number : ADA018558

Title :   Control of Snow and Ice on Missile Fields

Descriptive Note : Final rept. May 1971-Apr 1973

Corporate Author : COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH

Personal Author(s) : Minsk, L D

PDF Url : ADA018558

Report Date : Oct 1975

Pagination or Media Count : 72

Abstract : The effect of snow and ice on the operation and maintenance of a subsurface missile system was investigated during the construction stage of the Grand Forks safeguard system site. Meteorological observations were made daily from 1 November to the following 30 April for the two winters 1971-72 and 1972- 73, and compared with observations made at the 1st order stations of Minot and Grand Forks, North Dakota, west and east respectively of the Safeguard site. Though differences occurred, the climatic patterns at the 1st order stations were similar, and indicate that 25-40 snowstorms can be expected each winter, snowfall in a single storm may reach 11 in. each year, and 20 in. 1 year in 30. A full-scale model of a portion of the Spartan missile mound was constructed, as well as part of the double chain link security fence and plywood models of six cell covers, and snow accumulation was observed during one winter. It was concluded that accumulation would never exceed the height of a cell cover, nor would snow completely bridge the pavement between cells. However, snow could accumulate to depths approaching 5-6 ft around the security fence under extreme conditions. When a hydraulic flume for conducting model tests for snowdrift potential became available late in the investigation, major structures at two of the radar installations were investigated, and a problem identified at one location. Performance tests were conducted on 12 models of 7-8 hp walk-behind snowblowers to evaluate the three tasks of lane, obstacle, and drift clearing which could be expected on the missile field. An analysis was made of the equipment requirements for snow clearance based on an estimate of accumulation on the site.

Descriptors :   *ANTIMISSILE DEFENSE SYSTEMS, *GUIDED MISSILE SILOS, *LAUNCHING SITES, *SNOW REMOVAL, ACCUMULATION, BLOWERS, CLIMATE, CONTROL, COVERINGS, DEPTH, FENCES, FIELD CONDITIONS, FIELD TESTS, ICE, MESH, METEOROLOGICAL DATA, MODEL TESTS, NORTH DAKOTA, PLASTICS, RADAR STATIONS, REMOVAL, SNOW COVER, SNOWDRIFTS, SURFACE TO AIR MISSILES, WINTER

Subject Categories : Meteorology
      Antimissile Defense Systems
      Guided Missile Launching and Basing Support

Distribution Statement : APPROVED FOR PUBLIC RELEASE