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Viewing 1 to 30 of 1816
2011-05-17
Technical Paper
2011-01-1704
Nickolas Vlahopoulos, Geng Zhang, Ricardo Sbragio
Vehicle design is a complex process requiring interactions and exchange of information among multiple disciplines such as fatigue, strength, noise, safety, etc. Simulation models are employed for assessing and potentially improving a vehicle's performance in individual technical areas. Challenges arise when designing a vehicle for improving mutually competing objectives, satisfying constraints from multiple engineering disciplines, and determining a single set of values for the vehicle's characteristics. It is of interest to engage simulation models from the various engineering disciplines in an organized and coordinated manner for determining a design configuration that provides the best possible performance in all disciplines. The multi-discipline design process becomes streamlined when the simulation methods integrate well with finite element or computer aided design models.
2016-04-05
Journal Article
2016-01-0497
Brian Falzon, Wei Tan
Abstract The development of the latest generation of wide-body carbon-fibre composite passenger aircraft has heralded a new era in the utilisation of these materials. The premise of superior specific strength and stiffness, corrosion and fatigue resistance, is tempered by high development costs, slow production rates and lengthy and expensive certification programmes. Substantial effort is currently being directed towards the development of new modelling and simulation tools, at all levels of the development cycle, to mitigate these shortcomings. One of the primary challenges is to reduce the extent of physical testing, in the certification process, by adopting a ‘certification by simulation’ approach. In essence, this aspirational objective requires the ability to reliably predict the evolution and progression of damage in composites. The aerospace industry has been at the forefront of developing advanced composites modelling tools.
2008-08-19
Technical Paper
2008-01-2228
Robert Mattern
This technical paper presents the author’s recommended approach to one aspect of managing flight safety - conducting Safety Risk Analyses (SRA) on in-service problems that may threaten flight safety. The author did not develop this statistically based approach for assessing the risk of future events, but has helped to improve it and highly endorses it. In conducting a safety risk analysis, the analyst might decide to perform a “quick” SRA and will need a minimal amount of information that will show the relative level of flight safety risk. When the analyst decides a complete safety risk analysis is needed, the possible approaches and level of details included in the SRA can vary greatly from company to company.
2008-08-19
Technical Paper
2008-01-2229
Chandrashekhar K. Thorbole, Hamid M. Lankarani
The necessity of avoiding the destructive and non-repeatable FSST (Full Scale Sled Test) makes it desirable to devise a cheaper and more repeatable method which can supplant this test procedure. This need developed the HCTD (HIC Component Testing Device) which is capable of providing conservative HIC results with higher repeatability. The computational model of the HCTD is validated against one of the tests conducted at CAMI with polyethylene foam. This validated model is used to conduct a series of tests with input parameters similar to the sled test to develop the correlation between the sled test and HCTD. This study hence concludes that a validated computational model of HCTD can be successfully utilized to address the HIC compliance issues for a foam padded surface.
2000-06-01
Magazine
Landing gear testing Transforming itself from component supplier to integrated systems supplier, a landing gear manufacturer faces new testing challenges. Improving fuselage crashworthiness An innovative composite concept for light aircraft has been developed to provide better passenger protection.
HISTORICAL
1991-10-01
Standard
AMS3389C
This specification covers a synthetic rubber in the form of a non-rigid, smooth bore, noncollapsing-type hose.
CURRENT
1993-10-01
Standard
AMS3389D
This specification covers a synthetic rubber in the form of a nonrigid, smooth bore, noncollapsing-type hose.
HISTORICAL
1991-10-01
Standard
AMS3388C
This specification covers a synthetic rubber in the form of a non-rigid, smooth bore, noncollapsing-type hose.
HISTORICAL
1961-07-01
Standard
AMS3388A
This specification covers a synthetic rubber in the form of a non-rigid, smooth bore, noncollapsing-type hose. This hose has been used typically for fueling aircraft, but usage is not limited to such applications. This hose is not intended for flexible connection between tractor and trailer, to be collapsed for drainage, or for operating pressures higher than 185 psi (1276 kPa).
HISTORICAL
1961-07-01
Standard
AMS3389A
This specification covers a synthetic rubber in the form of a nonrigid, smooth bore, noncollapsing-type hose. This hose has been used typically for fueling aircraft, but usage is not limited to such applications. This hose is not intended for flexible connection between tractor and trailer, to be collapsed for drainage, or for operating pressures higher than 250 psi (1724 kPa).
HISTORICAL
1958-08-01
Standard
AMS3389
This specification covers a synthetic rubber in the form of a nonrigid, smooth bore, noncollapsing-type hose. This hose has been used typically for fueling aircraft, but usage is not limited to such applications. This hose is not intended for flexible connection between tractor and trailer, to be collapsed for drainage, or for operating pressures higher than 250 psi (1724 kPa).
CURRENT
1993-10-01
Standard
AMS3388D
This specification covers a synthetic rubber in the form of a non-rigid, smooth bore, noncollapsing-type hose.
HISTORICAL
1958-08-01
Standard
AMS3388
This specification covers a synthetic rubber in the form of a non-rigid, smooth bore, noncollapsing-type hose. This hose has been used typically for fueling aircraft, but usage is not limited to such applications. This hose is not intended for flexible connection between tractor and trailer, to be collapsed for drainage, or for operating pressures higher than 185 psi (1276 kPa).
HISTORICAL
1961-07-01
Standard
AMS3386A
This specification covers a synthetic rubber in the form of soft wall, smooth bore, collapsing-type hose. This hose has been used typically for fueling aircraft from tank trucks or pits where the hose will be rolled flat for stowage on a reel, but usage is not limited to such applications. Not recommended for operating pressures higher than 125 psi (862 kPa).
CURRENT
1993-10-01
Standard
AMS3386D
This specification covers a synthetic rubber in the form of a soft wall, smooth bore, collapsing-type hose.
CURRENT
1993-10-01
Standard
AMS3387E
This specification covers a synthetic rubber in the form of a non-rigid, smooth bore, noncollapsing hose with textile reinforcement.
HISTORICAL
1991-10-01
Standard
AMS3386C
This specification covers a synthetic rubber in the form of a soft wall, smooth bore, collapsing type hose.
HISTORICAL
1960-01-01
Standard
AMS3380
This specification covers polytetrafluoroethylene resin in the form of extruded and sintered flexible tube reinforced with wire braid. Primarily for fluid lines operating in service up to 230 degrees C (446 degrees F) and under pressures up to 1500 psi (10,342 kPa).
HISTORICAL
1974-12-01
Standard
AMS3380B
This specification covers polytetrafluoroethylene resin in the form of extruded and sintered flexible hose reinforced with wire braid.
HISTORICAL
1965-09-01
Standard
AMS3380A
This specification covers polytetrafluoroethylene resin in the form of extruded and sintered flexible tube reinforced with wire braid. Primarily for fluid lines operating in service up to 230 degrees C (446 degrees F) and under pressures up to 1500 psi (10,342 kPa).
CURRENT
1991-04-01
Standard
AMS3380D
This specification covers a polytetrafluoroethylene resin in the form of extruded and sintered flexible tube reinforced with wire braid.
HISTORICAL
1983-07-01
Standard
AMS3380C
This specification covers polytetrafluoroethylene resin in the form of extruded and sintered flexible hose reinforced with wire braid.
Viewing 1 to 30 of 1816

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