The maximum filling rate for an R-11 Refueler is not explicitly provided, but by comparing it to the standard flow rate for gasoline pipelines, one could estimate a rate similar to 500 gpm, subject to the system's design and capacity.
The maximum rate of flow at which you can fill the tank on the Kovatch-series R-11 Refueler using the bottom loading system is derived from general information provided about gasoline flow rates and properties. While the question does not provide specific data about the R-11 Refueler's bottom loading system, it can be assessed by comparing with given examples.
Typically, underground gasoline pipelines to major users operate at a flow rate of about 500 gallons per minute (gpm) or 3.00 × 10-2 m³/s, considering standard properties of gasoline such as viscosity (1.00 × 10-3 (N/m²).s) and density (680 kg/m³). Assuming the refueler's system can handle similar or greater flow rates, the maximum filling rate will be influenced by these factors and the system's specific design.
In conclusion, without specific stats for the R-11 Refueler's system, a rough comparison would suggest that filling rates similar to gasoline pipeline flow rates could be possible, taking into consideration the provided physical properties of gasoline in various engineering contexts.