In this paper, we present an estimation of the heat flux generated by friction under real aircraft braking conditions using an inverse method. The estimation is performed considering an assumption of 1D transient model and multiple interfaces. This model takes into account a non-perfect description of the thermal contact. Then, an identification of the generated heat flux by friction in the different interfaces from experimental data is performed using a linear temporal evolution parameterization of this parameter. The reconstruction of the thermal field from identified generated heat fluxes provides some very low residues. The comparison between the thermal energy identified by the inverse method and mechanical energy absorbed on the test bench validates the results.