What is specific fuel consumption aircraft?
What is specific fuel consumption aircraft?
The ratio of the fuel mass flow of an aircraft engine to its output power, in specified units. Specific fuel consumption. (abbreviated sfc or SFC) is a widely used measure of atmospheric engine performance.
What is the SFC of an engine related to?
We then define specific fuel consumption (SFC) as the quantity of fuel burned in unit time required to produce a given engine output. SFC is a technical figure of merit that indicates how efficiently the engine converts fuel into power.
What is the formula for specific fuel consumption Mcq?
Explanation: The unit of specific fuel consumption is given by kg/kW-hr. The formula for specific fuel consumption is C=\frac{Q_f}{P} where Qf is fuel flow rate, P is power and C is specific fuel consumption. 3.
How do you calculate fuel consumption per kWh?
You can ESTIMATE the fuel consumption by multiplying the energy out (kWh) by 0.27 to get litres consumed. If it is a very small diesel (under 10 kW) then maybe closer to 0.3 litres per kWh and if it is a modern, high-speed, diesel over 900 kW then closer to 0.26 litres per kWh.
How do you calculate the specific fuel consumption of an aircraft?
The fuel mass flow rate is related to the thrust (F) by a factor called the specific fuel consumption (TSFC). The specific fuel consumption equals the mass flow rate divided by the thrust. (TSFC = mf / F ).
Which is more efficient Otto or Diesel?
Explanation: Otto cycle is more efficient than Diesel cycle for a given compression ratio. For constant maximum pressure and heat input, the air standard efficiency of the gas power cycle is in the order.
How do you calculate maximum fuel consumption from engine performance?
Formula To Estimate Maximum Engine Fuel Consumption. Gallon Per Hour (GPH) = (specific fuel consumption x HP)/Fuel Specific Weight. Constants Gas Diesel. SFC .50 lb. per HP .40 lb. per HP. FSW 6.1 lb. per gal. 7.2 lb per gal.
What is the specific fuel consumption of a jet engine?
The Specific Fuel Consumption (SFC) of a jet engine cis defined per thrust and called more precisely also Thrust-specific Fuel Consumption (TSFC). This common definition comes from the fact that thrust (and not power) is measured on jet engine test stands. Engine effi- ciency is however related to power.
How do you calculate thrust specific fuel consumption?
The fuel consumption rate is described in terms of the thrust specific fuel consumption (tsfc), with the symbol c, and defined as the fuel weight flow rate per hour per pound of thrust with the units of pounds per hour per pound, usually expressed as inverse hours (hr −1): (10)tsfc = c = dWf / dt T
How do you calculate GPH on a diesel engine?
Formula To Estimate Maximum Engine Fuel Consumption Gallon Per Hour (GPH) = (specific fuel consumption x HP)/Fuel Specific Weight Constants Gas Diesel SFC .50 lb. per HP .40 lb. per HP FSW 6.1 lb. per gal. 7.2 lb per gal. 300-hp Diesel Engine Example
