Housing made from an organic-matrix composite material promoting the discharge of smoke

A gas turbine housing (100) made from an organic-matrix composite material comprising a reinforcement densified by an organic matrix delimits an inner volume. The housing comprises, on the inner face (101) of same, a structural portion (120) having a first face (120a) facing the inner face of the housing and a second opposing face (120b) defining a flow channel portion (102). Recesses (130) opening into the inner volume of the housing are present between the inner face (101) of the housing and the first face (120a) of the structural portion (120) facing said inner face of the housing. The recesses (130) allow the gases produced by the degradation of the resin of the housing in case of a fire to be discharged from the flow channel side. 种燃气涡轮机壳体(100)，其由有机基质复合材料制成，所述有机基质复合材料包括由有机基质致密化的增强件，所述壳体限定内部容积。所述壳体在其内表面(101)具有结构部件(120)，所述结构部件具有第表面(120a)和相对的第二表面(120b)，所述第表面面向所述壳体的内表面，所述第二表面限定流动通道(102)的部分。所述结构部件(120)的面对所述壳体的内表面(101)的第表面(120)具有槽(130)。所述槽(130)使得在火灾期间因树脂降解而产生的气体能排入到流动通道侧。