Fig. 3

Reliability (\(\mathcal{R}\)) under parallel attack. The horizontal axis measures the mission time (MT) τ in a scale normalized to the ETTF of the reference system 〈1,0〉, i.e., normalized to μ_1,0=1/λ. For each curve, associated with a specific 〈n,f〉 configuration, the vertical axis measures \(\mathcal{R}^{\parallel}_{n,f}(\tau)\), and the respective τ_max (in the rightmost column of the auxiliary box on the upper right) is the value satisfying \(\tau\in[0,\tau_{\max}]\Leftrightarrow\mathcal{R}^{\parallel}_{h,f}(\tau)\geq \mathcal{R}^{\parallel}_{1,0}(\tau)\)