The central selling point of the is its fanless design. In a standard PC, fans are the first component to fail, usually within 18 to 24 months of continuous operation due to dust accumulation and bearing wear.
+-------------------------------------------------------------+ | Proton-M Heavy Lift Architecture | +-------------------------------------------------------------+ | Stage 1: Central Oxidizer Tank + 6 Outboard Fuel Tanks | | Powers six RD-276 engines (11.0 MN Vacuum Thrust) | +-------------------------------------------------------------+ | Stage 2: Core Propulsion Module | | Three RD-0210 engines + One RD-0211 engine | +-------------------------------------------------------------+ | Stage 3: Orbital Trajectory Inserter | | Standard ascent profile to sub-orbital placement | +-------------------------------------------------------------+ | Upper Stage: Breeze-M (or Block DM) | | Autonomous multi-burn trajectory adjustments | +=============================================================+ | PAYLOAD: High-Capacity ISTAR Satellite System | +-------------------------------------------------------------+ Strategic Payload Capacities istar-proton