FIELD: space craft engineering. SUBSTANCE: device has combustion chamber, ignitor, specimen secured to a holder, mechanism for changing specimen, and unit for directing the flow. The mechanism for changing the specimen to be tested is immediately mounted inside the combustion chamber and constructed as two drums which are provided with specimen holders and arranged along the longitudinal axis on the back side of the combustion chamber. The specimen holders have a drive of fixed position mounted from the outer side of the back wall. The distance between the pair of adjacent specimens exceeds the size of the combustion zone for the specimen to be tested. EFFECT: enhanced reliability. 4 cl, 1 tbl
