The primary job of a jet engine is to create forward thrust by compressing air (or other fluid) entering one end, thereby forcing it to leave the other end much faster. These engines were developed just after World War II and continue to be used today.
This sample is a used compressor blade from a 1960s Rolls Royce Avon axial flow jet engine flown by the Royal Air Force.
Made of a coated aluminum alloy to keep the engine weight low while maintaining strength. Many are also made of titanium. A single engine contains hundreds of these blades which cumulatively produce up to 78kN (17,000lbf) of thrust.
Great learning aid for airfoil geometry and metallurgy.
Makes a great gift for aviation enthusiasts.
Coated aluminum alloy with OEM stamps
Length: most are 3 ⅝"
An axial compressor is a gas compressor that can continuously pressurize gases . It is a rotating, airfoil -based compressor in which the gas or working fluid principally flows parallel to the axis of rotation, or axially. This differs from other rotating compressors such as centrifugal compressor, axi-centrifugal compressors and mixed-flow compressors where the fluid flow will include a "radial component" through the compressor. The energy level of the fluid increases as it flows through the compressor due to the action of the rotor blades which exert a torque on the fluid. The stationary blades slow the fluid, converting the circumferential component of flow into pressure. Compressors are typically driven by an electric motor or a steam or a gas turbine.
Axial flow compressors produce a continuous flow of compressed gas, and have the benefits of high efficiency and large mass flow rate , particularly in relation to their size and cross-section. They do, however, require several rows of airfoils to achieve a large pressure rise, making them complex and expensive relative to other designs (e.g. centrifugal compressors).
Axial compressors are integral to the design of large gas turbines such as jet engines , high speed ship engines, and small scale power stations. They are also used in industrial applications such as large volume air separation plants, blast furnace air, fluid catalytic cracking air, and propane dehydrogenation . Due to high performance, high reliability and flexible operation during the flight envelope, they are also used in aerospace engines.