Propulsion Calculator

The Lockheed P-38 Lightning was a World War II-era fighter aircraft. The thermal efficiency is a term more commonly associated with heat engines like gas turbines or internal combustion engines rather than aircraft as a whole. However, I can provide a general explanation. Thermal efficiency is a measure of how well an engine or system […]

The Rolls-Royce RB.162 is a lightweight British turbojet engine produced by Rolls-Royce Limited. Developed in the early 1960s, it was specially designed for use as a lift engine for VTOL aircraft but was also used in a later variant of the Hawker Siddeley Trident airliner as an auxiliary boost engine. A smaller related variant, the RB.181 remained a design project only, as did a turbofan version designated RB.175. The thermal efficiency is

The Rolls-Royce RB.145 was a British jet engine designed in the early-1960s by Rolls-Royce for use as a lightweight VTOL lift and cruise engine. Developed from the Rolls-Royce RB108 the RB.145 featured more accessories and a higher thrust rating. Six engines developed by MAN Turbo were fitted to the first prototype of the EWR VJ 101 experimental German fighter aircraft, achieving supersonic flight by July 1964. The thermal efficiency is expressed mathematically

The Rolls-Royce RB.401 was a British two-spool business jet engine which Rolls-Royce started to develop in the mid-1970s as a replacement for the Viper. RB.401-06 prototype engines were already being manufactured when a decision to develop the higher thrust RB.401-07 was taken. The thermal efficiency is expressed mathematically as: where: ηth​ is the thermal efficiency, Tv​ is the thrust produced by the engine, Vjet​ is the jet

The thermal efficiency of an aircraft like the Falcon 50 EX is typically discussed in terms of its propulsion system, specifically the engines. For the Falcon 50 EX, specific details about its thermal efficiency would depend on the engines installed. The Falcon 50 EX is equipped with three Honeywell TFE731-40 engines. The thermal efficiency is

The Dassault Falcon 5X is a business jet that was under development by Dassault Aviation. Unfortunately, the Falcon 5X program was terminated by Dassault Aviation due to various technical issues. Generally, the thermal efficiency of an aircraft is not directly calculated or specified for an entire aircraft like it is for an engine. Instead, thermal

The Rolls-Royce RB282 is a new series of twin-spool turbofan engines under development by Rolls-Royce. The thermal efficiency is expressed mathematically as: where: ηth​ is the thermal efficiency, Tv​ is the thrust produced by the engine, Vjet​ is the jet velocity, ​ṁf is the mass flow rate of fuel, hc​ is the specific enthalpy of the fuel.  

The Rolls-Royce RB.211 is a family of high-bypass turbofan engines that has been widely used in various commercial and military aircraft. The thermal efficiency of a turbofan engine is a measure of how effectively the engine converts the chemical energy in fuel into useful work, primarily in the form of thrust. The thermal efficiency is

The Rolls-Royce Dart is a turboprop engine that was widely used in various aircraft, including regional airliners such as the Vickers Viscount. The thermal efficiency of a turboprop engine is a measure of how effectively the engine converts the chemical energy in fuel into useful work, primarily in the form of shaft power. The thermal

The Rolls-Royce Gem is a turboshaft engine developed specifically for the Westland Lynx helicopter in the 1970s. The design started off at de Havilland Engine division (hence the name starting with “G”) and passed to Bristol Siddeley as the BS.360. Rolls-Royce bought out Bristol Siddeley in 1966 and after it dropped the Bristol Siddeley identity the engine became the RS.360. The Gem’s three-shaft engine configuration is rather unusual