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2017-12-01
Book
Ravi Rajamani
The environmental impact of hydrocarbon-burning aircraft is one of the main motivations for the move to electric propulsion in aerospace. Also, cars, buses, and trucks are incorporating electric or hybrid-electric propulsion systems, reducing the pressure on hydrocarbons and lowering the costs of electrical components. The economies of scale necessitated by the automotive industry will help contain costs in the aviation sector as well. The use of electric propulsion in airplanes is not a new phenomenon. However, it is only recently that it has taken off in a concrete manner with a viable commercial future. The Electric Flight Technology: Unfolding of a New Future reviews the history of this field, discusses the key underlying technologies, and describes how the future for these technologies will likely unfold, distinguishing between all-electric (AE) and hybrid-electric (HE) architectures. Written by Dr.
2017-11-27
Technical Paper
2017-01-7011
Sandip Phapale, Pavan Sindgikar, Narayan Jadhav
Abstract Indian automotive market has grown extremely competitive in the recent past. In order to meet the ever growing expectations of the customers, automobile manufacturers are compelled to offer their products under superior quality with supreme comfort. Customers wish of high levels of tactile comfort in the cabin compartment and effortless operation of peripherals will result in negligible fatigue and a pleasant drive, needs to be duly fulfilled. One has to focus more on Gear shift lever and Steering wheel, which are being the most sensitive tactile points in an automobile. The gear shift lever knob is frequently used and significantly influences the perception of the shift comfort for a driver during actual vehicle application.
CURRENT
2017-11-21
Standard
AIR5867
This report revises ARD50015 document to the AIR format. This report, as was the original, is intended to complement ARP1420C and AIR1419C documents issued by the SAE S-16 Committee on spatial total-pressure distortion. These previous documents addressed only total-pressure distortion and excluded total temperature distortion. The subject of inlet total temperature distortion is addressed in this report with some background and identification of the problem area. The status of past efforts is reviewed, and an attempt is made to define where we are today. Deficiencies, voids, and limitations in knowledge and test techniques for total temperature distortion are identified.
CURRENT
2017-11-21
Standard
ARP1210E
This SAE Aerospace Recommended Practice (ARP) describes a class of digital computer programs for use by organizations other than the engine supplier for reduction of engine test data relating to the interface of the engine in the airframe or test facility. This ARP also is intended as a guide for the preparation of such computer programs.
CURRENT
2017-11-21
Standard
AS6315
NO SCOPE AVAILABLE.
CURRENT
2017-11-21
Standard
AS6495B
SCOPE IS UNAVAILABLE.
CURRENT
2017-11-21
Standard
AS4227C
Scope is unavailable.
CURRENT
2017-11-21
Standard
AS5316
This SAE Aerospace Standard (AS) specifies the general requirements for data recording procedures, packaging, and storing of elastomeric seals and seal assemblies which include an elastomeric element prior to the seal being assembled into hardware components.
CURRENT
2017-11-20
Standard
AIR1419C
This document addresses many of the significant issues associated with effects of inlet total-pressure distortion on turbine-engine performance and stability. It provides a review of the development of techniques used to assess engine stability margins in the presence of inlet total-pressure distortion. Specific performance and stability issues that are covered by this document include total-pressure recovery and turbulence effects and steady and dynamic inlet total-pressure distortion.
CURRENT
2017-11-20
Standard
AMS3382D
This specification covers two classes (durometers) of tetrafluoroethylene/propylene rubber (FEPM) in the form of extrusions, sheet, strip, and molded shapes. These products have been used typically for components requiring continuous operation in dry air, hydraulic fluids, and synthetic engine oils at temperatures from -5 to +232 ° C (+23 to 450 ° F) or in high pH chemical decontamination solutions, but usage is not limited to such applications.
CURRENT
2017-11-20
Standard
AMS3331C
This specification covers a fluorosilicone (FVMQ) elastomer that can be used to manufacture product in the form of sheet, strip, tubing, extrusions, and molded shapes. This specification should not be used for molded rings, compression seals, O-ring cord, and molded in place gaskets for aeronautical and aerospace applications without complete consideration of the end use prior to the selection of this material.
CURRENT
2017-11-20
Standard
AS931C
SCOPE IS UNAVAILABLE.
2017-11-18
Article
The Boston-based start-up successfully completed test flights of the SX-1.2—a subscale, subsonic, unmanned demonstrator for its S-512 Quest Supersonic Jet. Competition from Aerion, HyperMach, and Boom points to supersonic commercial flight arriving earlier than thought.
2017-11-18
WIP Standard
AIR809B
Data are related to the dimensional changes with respect to room temperature and provide accuracy sufficient for use with most aerospace systems. Two basic methods of solution are presented with examples for steady state conditions involving uniform and non-uniform temperature distributions. The answers to the example problems are carried to the fifth place for a comparison of the results between methods I and II.
2017-11-18
WIP Standard
ARP676A
No scope available.
2017-11-18
WIP Standard
ARP674D
Groove designs presented herein are applicable for use with the following MS metal O-ring gaskets, or to dimensionally equivalent gaskets of other materials: a. AMS 5570 or AMS 5576 Plain 1. MS9141 - 0.035 tube x 0.006 wall 2. MS9142 - 0.062 tube x 0.006 wall 3. MS9202 - 0.062 tube x 0.010 wall 4. MS9203 - 0.094 tube x 0.006 wall 5. MS9204 - 0.094 tube x 0.010 wall 6. MS9205 - 0.125 tube x 0.010 wall b. AMS 5570 or AMS 5576 Silver Pl. 1. MS9371 - 0.035 tube x 0.006 wall 2. MS9372 - 0.062 tube x 0.006 wall 3. MS9373 - 0.062 tube x 0.010 wall 4. MS9374 - 0.094 tube x 0.006 wall 5. MS9375 - 0.094 tube x 0.010 wall 6. MS9376 - 0.125 tube x 0.010 wall
2017-11-18
WIP Standard
AIR26B
This SAE Aerospace Information Report (AIR) records the dimensions for the No. 70-90, 70L-90, 80-100 and 80L-100 dual rotation propeller shaft ends, which have been deleted from ARP375.
2017-11-18
WIP Standard
AIR1471B
The purpose of this SAE Aerospace Information Report (AIR) is to provide the aerospace propulsion industry with recommended assembly torque limits for commonly used aircraft propulsion system threaded fasteners when a common torque value per size is the objective.
2017-11-17
Article
Chief Technology Officer Dr. Ben Patel details Tenneco’s latest system solutions developed to address two key goals for commercial trucks: reducing criteria pollutants and improving fuel economy.
2017-11-17
WIP Standard
AS4959A
This procurement specification covers bolts and screws made from a corrosion and heat resistant, age hardenable iron base alloy of the type identified under the Unified Numbering Systems as UNS S66286. The following specification designations and their properties are covered: AS4959 140 ksi minimum ultimate tensile strength at room temperature 70 ksi stress-rupture strength at 1200 degrees F; AS4959-1 140 ksi minimum ultimate tensile strength at room temperature 84 ksi minimum ultimate shear strength at room temperature.
2017-11-17
WIP Standard
AS82C
This SAE Aerospace Standard (AS) defines an external thread with a rounded root radius based on a minimum root radius of .108 x Pitch.
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