What do you mean by Endurance of Aircraft?
In aviation, endurance is the maximum length of time that an aircraft can spend in a cruising flight. In other words, it is the amount of time an aircraft can stay in the air with one load of fuel. Endurance is different from range, which is a measure of distance flown. For example, a typical sailplane exhibits high endurance characteristics but poor range characteristics. Endurance can factor into aviation design in a number of ways. Some aircraft, require high endurance characteristics as part of their mission profile (often referred to as loiter time). Endurance plays a prime factor in finding out the fuel fraction for an aircraft. Endurance, like range, is also related to fuel efficiency; fuel-efficient aircraft will tend to exhibit good endurance characteristics.
How to Calculate Preliminary Endurance for Prop-Driven Aircraft?
Preliminary Endurance for Prop-Driven Aircraft calculator uses Endurance of Aircraft = (Lift to Drag Ratio at Maximum Endurance*Propeller Efficiency*ln(Weight of Aircraft at Beginning of Loiter Phase/Weight of Aircraft at End of Loiter Phase))/(Power Specific Fuel Consumption*Velocity for Maximum Endurance) to calculate the Endurance of Aircraft, The Preliminary endurance for Prop-Driven Aircraft formula is defined as the length of time that an aircraft can remain airborne for a given expenditure of fuel and for a specified set of flight conditions. Here it is for propeller-driven aircraft. Endurance of Aircraft is denoted by E symbol.
How to calculate Preliminary Endurance for Prop-Driven Aircraft using this online calculator? To use this online calculator for Preliminary Endurance for Prop-Driven Aircraft, enter Lift to Drag Ratio at Maximum Endurance (LDEmaxratio), Propeller Efficiency (η), Weight of Aircraft at Beginning of Loiter Phase (WL(beg)), Weight of Aircraft at End of Loiter Phase (WL,end), Power Specific Fuel Consumption (c) & Velocity for Maximum Endurance (V(Emax)) and hit the calculate button. Here is how the Preliminary Endurance for Prop-Driven Aircraft calculation can be explained with given input values -> 2028.252 = (26*0.93*ln(400/300))/(0.000166666666666667*20.5777777777778).