The paper “ Selection Parameters for Engines for the Aircrafts” is a forceful version of a lab report on technology & design. Engines for the aircraft are selected on the basis of certain key parameters for the achievement of the desired results through their performance and delivery of the services. Engine Selection ParametersThere are four key parameters that are considered for the selection of an outstanding engine to fulfill the aircraft's needs. These key parameters are listed as under: 1. Thrust: The Thrust parameter is selected with the observance of sea-level thrust. The current fan engines create about 60 kN of the sea-level as static thrust per square meter of fan face area as faced by the engine of the aircraft.
Therefore, the thrust level tends to determine the size of the engine of the aircraft. The FJ-33-4 engine for the aircraft has been selected to make sure that the recommended specifications of the engine match the requirements within the range of +5%, - 0% of the contained allowance. The possible selection of the engine in the cruise will help in managing the best specific fuel consumption (SFC), to overcome the stress on the aircraft as the under-sized engine like FJ-33-4 has the ability to meet the technical requirements while its performing and the service life of the engine will also be improved. 2.
Specific Fuel Consumption, c /hour: For low operating cost design, low specific fuel consumption as a key parameter is considered for the selection of the aircraft engine for achieving the target of low SFC and to save the fuel in the aircraft. The proposed objective will help in the achievement of profits instituting payload and the same could be used to produce the The operational weight of the design low and if the operational weight of the aircraft is low, the same will lead to make the manufacturing cost to the lower side along with the inferior direct operational costs. 3.
Weight: The third key parameter for the selection of the engine of the aircraft is the weight of the aircraft. The target in the shape of a long-range design engine leads to establishing the target of cruise speed to lower than that of the maximum range speed.
This speed will lower the cruise drag and similarly, the weight of the engine will also be reduced. These specifications that are in the shape of low thrust, economical consumption of fuel will lead to the selection of smaller and lighter engines with the desired performance for the aircraft and the FJ-33-4 is the best selection as engine of the aircraft. 4. Size: The size of the aircraft’ s engines has a relationship with the value of the thrust as produced by the aircraft while during their operations. An increase in the engine’ s fans' diameter has a positive relationship that is to produce a large amount of thrust as a product.
Similarly, there will be a problem in the installation of the engines in the aircraft under their wings along with the problems of greater drag, an aerodynamics force that opposes aircraft’ s motion in the air. The engine selection is accomplished while considering elimination of the two potential problems as a) ground clearance might not be compromised at any cost and sufficient space must be available between the engine of the aircraft and the ground for safety reasons during the physical operations of taking off and landing, and b) the cowl drag predictions during high power/low-speed operations should be concluded to demonstrate satisfactory statistics for feasible flight operations.
Croft, John (May 2006). "Very Light Jets: Boom or Blip" (PDF). Aerospace America (American Institute of Aeronautics and Astronautics). http://www.aiaa.org/aerospace/images/articleimages/pdf/AA_May06_CRO.pdf.