FIELD: heating.
SUBSTANCE: invention relates to electric heaters and can be used in thermal test benches for ground-based tests of spacecrafts (SC) under conditions of high temperatures. Combined tubular heater includes two shells from magnesium oxide with located between them shell from stabilized zirconium dioxide. In magnesium oxide shell accommodates tungsten rods arranged coaxially. Besides, a zirconium dioxide shell coaxially and coaxially with tungsten rods there is a tungsten cable which serves as a starting heater for a shell of stabilized zirconium dioxide. At that, rope from tungsten on both sides by means of heat-compensating couplings is connected to tungsten rods.
EFFECT: technical result of proposed invention consists in improvement of working temperatures of heater.
3 cl, 4 dwg
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