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aircraft rotor blades

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Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003467
EISBN: 978-1-62708-195-5
... deal mainly with structures that exhibit an initial material and/or manufacturing defect or failures that are most prevalent and most easily solved. The components include helicopter rotor blade, composite wing spar, and aircraft rudder. aircraft rudders composite wing spar helicopter rotor...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006821
EISBN: 978-1-62708-329-4
... Handbook , 2003. Case Study 5: Failure Analysis of Engine Compressor Rotors Two aircraft engine compressor rotors sustained damage during operation. Blades from both rotors were found sheared off, and several blades were lifted from the dovetail portion of the drum. In one of the rotors, all...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005738
EISBN: 978-1-62708-171-9
..., such as a hard aircraft landing or surge; overtemperature running conditions; and rapid shutdowns arising from a sudden fuel starve, for example, in a power gas turbine. Other distortion-related factors are normal casing out-of-roundness, clearances in bearings, and rotor vibrations arising from changes in gas...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003485
EISBN: 978-1-62708-195-5
... The Eurocopter France EC120 and N4 helicopters are used for civilian law enforcement and search and rescue in Europe, the United States, and in many other countries. The large centrifugal loads of each rotor blade (the N4 has five blades) are supported by a blade sleeve, which holds the rotor blade to the drive...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006378
EISBN: 978-1-62708-192-4
... done in this subject has been in connection with just two major problems: moisture erosion of low-pressure steam turbine blades operating with wet steam, and rain erosion of aircraft or missile surfaces and helicopter rotors. However, the rain erosion of wind turbine blades has increasingly become...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003476
EISBN: 978-1-62708-195-5
... of composite rotor components saw the initial PMR-15 applications occur in both rotors (blades) and stators (vanes). The blade illustrated in Fig. 3 was the first structural airfoil component fabricated with a PMR-15 resin and reinforced with HTS graphite fiber. The blade was designed and fabricated...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001080
EISBN: 978-1-62708-162-7
..., firewalls, fairings, hydraulic tubing, deicing ductings, SPF parts  Engines Compressor disks and blades, fan disks and blades, casings, afterburner cowlings, flange rings, spacers, bolts, hydraulic tubing, hot-air ducts, helicopter rotor hubs  Satellites, rockets Rocket engine casings, fuel tanks...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006428
EISBN: 978-1-62708-192-4
... filters past the struts and inlet guide vane (IGV) into a high-pressure compressor ( Ref 1 ). The compressor broadly consists of alternating stages of compressor blades and vanes which decrease in size as one goes from front to aft stages. The blades are attached to a rotor in the form of blade or bucket...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003570
EISBN: 978-1-62708-180-1
.... Affected Systems and Materials Material degradation by liquid-droplet erosion is a significant problem in just a few kinds of engineering systems: blades in the low-pressure ends of steam turbines where the steam is “wet,” and aircraft, missiles, and helicopter rotors flying at high speeds through...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003411
EISBN: 978-1-62708-195-5
... are usually flat-to-medium contour and fall into part categories mentioned earlier. Highly contoured aircraft parts such as fuselages, inlet ducts, nose cones, nozzles, sponsons, rotor blade grips, and so on are better suited for fiber placement than tape laying. When considering automated tape lay-up...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006802
EISBN: 978-1-62708-329-4
.... The industrial definition of failure is often quite different from a textbook definition. A component, in practice, is deemed to have failed when it can no longer perform its intended function safely, reliably, and economically. Any one of these criteria can constitute failure. For example, a steam turbine blade...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003477
EISBN: 978-1-62708-195-5
... material applications. Structure (wing, fuselage, empennage, nacelle, rotor): 6120 kg (13,496 lb). Carbon epoxy: 3100 kg (6856 lb) European Military Application (the Eurofighter) On the Typhoon (Eurofighter) aircraft, carbon-fiber-reinforced composites make up approximately 30% of the structural...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003512
EISBN: 978-1-62708-180-1
... of these criteria can constitute failure. For example, a steam turbine blade whose tip has eroded affects turbine efficiency and hence affects the economics of operation adversely. The blade should therefore be replaced even though it can continue to operate. Component failures are thus defined in terms...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003500
EISBN: 978-1-62708-180-1
... Distress damages Vibration Short/open circuit Failed components Sleeve bearing Seal Coupling Shaft Pinion/ball/turning gear Casing Rotor Impeller Shroud Piston Diaphragm Wheel Blades; foil, root, shroud Labyrinth Thrust bearing Pivoted pad bearing Roller/ball bearing Cross-head piston Cylinder...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004039
EISBN: 978-1-62708-185-6
... Flat Webs The conventional steel forging shown in Fig. 7(a) was used in the manufacture of main rotor yokes for helicopters. The yoke was designed to provide clevis forks at each end for attachment of the rotor blades. In service, the centrifugal force of the rotating blades imposed tensile...
Book Chapter

By Don O. Evans
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003410
EISBN: 978-1-62708-195-5
... gear doors, fuel boom, and the rotor blade grip ( Ref 1 ). Another military aircraft that is taking advantage of the unique capabilities of the fiber placements is the F/A-18 E/F Super Hornet. The U.S. Navy funded a program to further advance fiber placement by implementing it on a F/A-18 E/F...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002393
EISBN: 978-1-62708-193-1
... Abstract Damage tolerance is a philosophy used for maintaining the structural safety of commercial transport aircrafts. This article describes the structural evaluations necessary to comply with the regulations contained in the Federal Air worthiness Requirements 25.571 whose guidance is given...
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001051
EISBN: 978-1-62708-161-0
... superalloys aircraft turbine blades directional solidification casting THE PRIMARY GOALS in the continuing development of the aircraft gas turbine are increased operating temperatures and improved efficiencies. A more efficient turbine is required to achieve lower fuel consumption. Higher turbine inlet...
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001052
EISBN: 978-1-62708-161-0
... in gas turbine engines or that are emerging as replacements because of the promise of increased operating temperatures and higher efficiencies for the aircraft of the future. These alloys are used in a variety of forms, such as turbine blades, vanes, and disks; compressor components; and ducting...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003459
EISBN: 978-1-62708-195-5
... than the original. To match the original stiffness, the repaired part would be weaker and slightly heavier than the original, and so on. Therefore, repair design involves evaluating trade-offs among these parameters, especially with stiffness-critical structures, such as helicopter rotor blades...