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aircraft rotor blades

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270115
EISBN: 978-1-62708-301-0
... Two compressor rotors of an aircraft engine sustained severe damage during operation. In both rotors, several blades got sheared off with some blades lifted from the dovetail portion of the drum. Several mounting dovetails on the rotor drum had fractured. The severity of damage progressively decreased...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.9781627083010
EISBN: 978-1-62708-301-0
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270143
EISBN: 978-1-62708-301-0
... Abstract A low-pressure turbine rotor blade failed during a test run, causing extensive damage to an aircraft engine. Visual examination showed that the nickel-base superalloy blade broke above the root platform in the airfoil section, leaving a fracture surface with two distinct regions, one...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270087
EISBN: 978-1-62708-301-0
... Abstract A turbine blade in an aircraft engine failed, fracturing at the root above the fir tree region. Fractography indicated that a fatigue crack initiated at the trailing edge of the blade and the final fracture occurred when the crack reached critical length. Although the exact cause...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.tb.sfa.t52780147
EISBN: 978-1-62708-268-6
... testing and analysis to evaluate spring performance at tolerance extremes. Apache Main Rotor Blade Chapter 1 mentions the Apache helicopter main rotor blade failures. McDonnell Douglas Helicopter Company engineers designed the Apache helicopter blade (a bonded stainless steel, carbon fiber...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280079
EISBN: 978-1-62708-267-9
... hollow nickel-base turbine blade of simple cooling geometry shown with cross sections of some other cooling configurations Cutaway view of PC cast complex nickel-base turbine blade Typical large structural casting Investment-cast polycrystalline integral nozzles and integral rotors for a gas...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120131
EISBN: 978-1-62708-269-3
..., cast Ti-48Al-2Cr-2Nb alloy was extensively evaluated for use in commercial gas turbine engines. Figure 14.3 shows the cast alloy in the form of low-pressure turbine (LPT) blades for high-bypass ratio, high-thrust commercial gas turbine engines. Figure 14.4 shows a rotor with cast LPT blades of Ti...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280339
EISBN: 978-1-62708-267-9
... of such alloys in aircraft gas turbines, as noted previously. Concurrently, aircraft investment-casting technology was adapted to casting of the more hot-corrosion-resistant turbine airfoil alloys used in land-based gas turbine power-generation applications. Land-based gas turbines use markedly larger blades...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120005
EISBN: 978-1-62708-269-3
... parts for helicopter blade systems; B-1B fracture-critical forgings and wing carry-through section; and rotor discs, blades, and compressor cases on various engines. Titanium buy weights for commercial and military aircraft Table 2.4 Titanium buy weights for commercial and military aircraft...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.caaa.t67870063
EISBN: 978-1-62708-299-0
... in this case was the development of a new aluminum alloy, 7475-T761. This material has a high level of resistance to exfoliation corrosion and therefore has been considered by aircraft designers as a favorable replacement for the 7075-T6 alloy. Main Rotor Blade of a Helicopter Intergranular...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.sap.t53000117
EISBN: 978-1-62708-313-3
... applications up to 1090 °C (1995 °F) REX-78 … Used for blading in Whittle engine V-57 GTE rotors … W-545 GTE parts, bolts … MA-956 GTE combustion chambers, energy-conversion systems Ferritic-matrix ODS alloy. Exceptional strength and resistance to oxidation, carburization, and hot corrosion...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300421
EISBN: 978-1-62708-323-2
... plastics to identify one that would resist wear and not squeal or make friction-induced noise, and also identify a plastic that would resist wear and be low friction. Probably a pin-on-disk test would be appropriate, using an actual rotor blade as the rider on flat test counterfaces at speeds and forces...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.9781627083409
EISBN: 978-1-62708-340-9
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870001
EISBN: 978-1-62708-314-0
... is not as critical. In military aircraft, low weight is “king” for performance and payload reasons, and composites often approach 20 to 40 percent of the airframe weight ( Fig. 1.25 ). For decades, helicopters have incorporated glass fiber–reinforced rotor blades for improved fatigue resistance, and in recent...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.sap.t53000009
EISBN: 978-1-62708-313-3
... superalloy production worldwide ( Ref 3 ). It is used in aircraft GTE components such as the compressor and turbine discs, casings, compressor blades, and fasteners. Some alloys may contain combined aluminum, titanium, and niobium, which could result in dual strengthening by γ′ and γ″, as is the case...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550001
EISBN: 978-1-62708-307-2
... allowed the rapid replacement of aluminum for wood and fabric in airplanes. Magnesium Magnesium was one of the main aerospace construction materials used for German military aircraft as early as World War I and extensively for German aircraft in World War II. The extraction of magnesium from...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280117
EISBN: 978-1-62708-267-9
... for increasingly higher strength at higher temperatures for advanced aircraft engines. As the strength of these materials increased, hot workability decreased. The advent of vacuum melting enabled the introduction of higher retained levels of the precipitation-hardening elements, aluminum and titanium...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040257
EISBN: 978-1-62708-300-3
... that could be obtained from these alloys resulted in higher strength-to-weight ratios in aircraft components such as jet engine disks. This process also led to development of techniques for isothermal forging of integrally bladed engine rotors (disks of superalloys forged integrally with ceramic blades...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.aacppa.t51140021
EISBN: 978-1-62708-335-5
..., wing tips, and aircraft pylons. 3.4.6 Vacuum Mold (V-Mold) Casting A heated plastic film is drawn over the pattern by vacuum. Unbonded sand is filled against the plastic-covered pattern within a vented flask and compacted by vibration. A vacuum is drawn through the flask after an unheated...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.caaa.t67870085
EISBN: 978-1-62708-299-0
... that are moving much more slowly. Almost all the work done on 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. Wet steam erosion-corrosion...