Personligt Kamouflage. Yttemperaturens beroende av Klimat, Fysis Aktivitet och Materialval. Datorsimulering: Och Klimatkammarstudier av Faeltuniform 90 samt Tva Kamouflagedrakter (Personal Camouflouge. Surface Temperature and Its Dependence on Climate, Physical Activity and Material Properties. Computer Simulations and Climatatic Chamber Studies on Combat Uniform 90 and Two Camouflouge Suits).

摘要

This study deals with the thermal Camouflage properties of a combat uniform (FU90) and two comouflage suits, FRYNSER och ULCAS (SAAB Barracuda AB). The study was run in a combined climatic chamber and wind tunnel. The climate was 10.3 degrees C, 58% rh and 19.7 degrees C, 63% rh. Air speed was 0 m/s and 2 m/s. A few measurements were also done at 5 m/s. Solar radiation lamps (800 W/m(squared)) were also used. The physical activity was standing still and walking on a treadmill at 1.5 m/s and the slope 1.4 degrees. Surface temperature was measured with an IR-camera. The results showed that the camouflage effect is improved if the suit is made thicker (higher insulation value) and the effect is further improved at wind. The effect of wind is greater than that of body movements. Surface temperature of FRYNSER (thickest) exceeded air temperature (at 20 degrees C) with roughly one degree at wind. The surface temperature of FU90 was, without solar radiation, a few degrees higher than FRYNSER at 20 degrees C and about 5 degrees at 10 degrees C.