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Included in this SAE Standard are the detailed general and dimensional specifications applicable to flanged 12-point screws recognized as SAE Standard and intended for general use in automotive and other ground-based vehicles and industrial equipment. Also included is Appendix A, covering runout sleeve gages and gaging. The inclusion of dimensional data in this standard is not intended to imply that all of the products described are stock production sizes. Consumers should consult manufacturers concerning availability of product.

A comprehensive computer package, FLARE, has been developed for carrying out Friction and Lubrication Analysis of Reciprocating Engines. FLARE considers four major lubricated components in an automotive engine -- piston skirt, piston rings, bearings, and valve train. Hydrodynamic, mixed, and boundary lubrication models are used, as appropriate, to model the lubrication phenomena. All the analytical models are based on solution of governing equations. Three levels of analyses with varying degrees of detail have been developed. Availability of different levels provides the flexibility of matching the complexity and accuracy of the analysis with the objective of the analysis. An empirical engine friction model, which is based on experimental data, is also available. Many user-friendly features are built into the FLARE system to make it easier to use for design engineers. This paper gives a brief overview of all the analysis sub-models incorporated into FLARE.

Comparisons are made between friction predictions of the FLARE (Friction and Lubrication Analysis of Reciprocating Engines) computer code and experimental data for the purpose of validating FLARE. An in-line four-cylinder engine under motoring conditions was selected for doing the experiments. Three major friction producing subassemblies were considered: piston assembly, crankshaft main bearings, and valve train. A Taguchi-type L16 matrix was used for the piston assembly, while an L8 matrix was used for the valve train. A traditional approach (varying one parameter at a time) was used for crankshaft main bearings. The agreement between experimental measurements and FLARE predictions, for all the cases studied, is very good. The match is closest for the valve train, followed by the crankshaft main bearings and piston assembly. In addition, trends and effects of changing design parameters are predicted correctly by FLARE.

This SAE Standard covers specifications for 37 degree and 45 degree single and double flares for tube ends intended for use with 37 degree flared tube fittings and 45 degree flared or inverted flared tube fittings, respectively.

This SAE Standard covers specifications for 37-degree and 45-degree single and double flares for tube ends intended for use with 37-degree flared tube fittings and 45-degree flared or inverted flared tube fittings, respectively.

This SAE Standard covers specifications for 37 deg and 45 deg single and double flares for tube ends intended for use with standard types of 37 deg flared tube fittings and 45 deg flared or inverted flared tube fittings, respectively. Dimensions for single and double 45 deg tubing flares are given in Fig. 1 and Table I. Dimensions for single and double 37 deg tubing flares are given in Fig. 2 and Table 2. The following general specifications supplement the dimensional data with respect to unspecified detail and apply to both 37 deg and 45 deg tubing flares.

The Fly-By-Light Advanced Systems Hardware (FLASH) program developed Fly-By-Light (FBL) and Power-By-Wire (PBW) technologies for military and commercial aircraft. FLASH is a Defense Advanced Research Project Agency (DARPA) Technology Reinvestment Program (TRP) consisting of three tasks. Task 3 of the TRP, Fly-By-Light Actuator Development, developed an advanced smart, rotary thin wing and two 20 horsepower (52 corner horsepower) electrohydrostatic Actuators (EHA). This paper summarizes the results of McDonnell Douglas Aerospace (MDA) modeling, analysis, testing, and system demonstrations performed under Task 3 of the DARPA agreement for the EHAs developed. EHA systems for the FLASH program were developed by two suppliers to meet the high power F-15 stabilator actuator performance requirements. One EHA included an AS-1773A optical data bus, and an optical position transducer for position feedback. These items created an EHA system utilizing complete closed loop FBL control.

The Fly-By-Light Advanced Systems Hardware (FLASH) program developed Fly-By-Light (FBL) and Power-By-Wire (PBW) technologies for military and commercial aircraft. FLASH consisted of three tasks. Task 1 developed the fiber optic cable, connectors, testers and installation and maintenance procedures. Task 3 developed advanced smart, rotary thin wing and electro-hydrostatic (EHA) actuators. Task 2, which is the subject of this paper, focused on integration of fiber optic sensors and data buses with cable plant components from Task 1 and actuators from Task 3 into centralized and distributed flight control systems. Open loop and piloted hardware-in-the-loop demonstrations validated readiness for application transition.

The Fly-By-Light Advanced Systems Hardware (FLASH) program is developing Fly-By-Light (FBL) and Power-By-Wire (PBW) technologies for military and commercial aircraft. The flight control system portion of FLASH focuses on the integration of fiber optic sensors, optic data buses, actuators (PBW, smart, rotary thin wing) and optic cable plant components for centralized and distributed flight control architectures. Laboratory demonstrations will show applicability to widebody commercial transport and military tactical aircraft. This paper summarizes the requirements, objectives, key technologies and demonstration configurations of each of three FLASH flight control system developments.

This technical report specifies the test procedure, test circuitry, and instruments required for measuring the performance of flashers used in motor vehicles.

This SAE Standard specifies the test procedure, test circuitry, and instruments required for measuring the performance of flashers used in motor vehicles.