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Documenting and mapping using three-dimensional (3D) technologies have become essential in crime- and crash-scene investigations in recent years. Traditionally, this has been accomplished using terrestrial laser scanners (TLS), which often come with significant upfront costs. In contrast, Recon-3D, launched in 2022, leverages the capabilities of Apple’s light detection and ranging (LiDAR) sensor, available in Pro and Pro Max models since 2020. This study aims to evaluate the relative accuracy of documenting vehicles in both pre- and post-collision conditions using these technologies. A deviation analysis was conducted utilizing CloudCompare software to compare point cloud data collected from the Leica RTC360 laser scanner with that obtained from Recon-3D for 7 vehicles in a pre- and post-impact condition for a total of n = 14 vehicles. At the 1, 2, and 3 cm deviation thresholds, the average percent of points which fell below each threshold level for all vehicles was 66%, 91%, and 97
Lim, JihwaLiscio, Eugene
Flow conditions on the road are quite different from the conditions used to develop vehicle aerodynamics. However, a significant amount of statistical data now exists that describes realistic road conditions. Some of these on-road flow characteristics can be replicated in wind tunnels. This paper reviews technical facilities designed to simulate on-road flow characteristics, such as turbulence intensity, turbulent length scales, and flow angle distribution. Reconstruction of a flow field that matches real road conditions is made possible by using active or passive turbulence generators within the wind tunnel. This review provides a comprehensive overview of these facilities, offering readers key insights into the challenges involved in replicating real-world flow conditions in wind tunnels.
Vondruš, JanVančura, Jan
This SAE Standard applies to machines as defined in Appendix A. Some of these machines can travel on-highway but function primarily off-highway.
Cranes and Lifting Devices Committee
This document presents design and application information which will allow optimized utilization of filter line wire and cable purchased to AS85485. Filter line wire is defined and design information is presented. The electrical and mechanical performance characteristics of the wire, along with recommended harnessing methods and techniques, are also presented.
AE-8A Elec Wiring and Fiber Optic Interconnect Sys Install
This specification covers a corrosion- and heat-resistant steel in the form of investment castings.
AMS F Corrosion and Heat Resistant Alloys Committee
This specification covers an aluminum alloy in the form of sand castings (see 8.6).
AMS D Nonferrous Alloys Committee
This specification covers a corrosion- and heat-resistant nickel alloy in the form of investment castings.
AMS F Corrosion and Heat Resistant Alloys Committee
This specification covers an aluminum-lithium alloy in the form of extruded profiles with a maximum cross-sectional area of 19 square inches (123 cm2) and a maximum circle size of 11 inches (279 mm) from 0.040 to 0.499 inch (1.00 to 12.50 mm) in thickness (see 8.6).
AMS D Nonferrous Alloys Committee
This specification covers a titanium alloy in the form of sheet 0.020 to 0.1874 inch (0.51 to 4.760 mm), inclusive, in nominal thickness (see 8.6).
AMS G Titanium and Refractory Metals Committee
This specification covers an aluminum alloy in the form of extruded bars, rods, wire, profiles, and tubing up to and including 1.000 inch (25.4 mm) in diameter, least thickness, or tube wall thickness (see 8.6).
AMS D Nonferrous Alloys Committee
This specification covers an aluminum alloy in the form of bars and rods 0.500 to 8.000 inches (12.7 to 203.2 mm) in nominal diameter or least difference between parallel sides and up to 50 square inches (322.6 cm2) in cross-sectional area (see 8.6).
AMS D Nonferrous Alloys Committee
This specification covers a premium aircraft-quality, low-alloy steel in the form of bars, forgings, mechanical tubing, and forging stock.
AMS E Carbon and Low Alloy Steels Committee
It is recommended that all helicopter engine development programs include an evaluation of engine starting requirements. The evaluation should include starting requirement effects on helicopter weight, cost, and mission effectiveness. The evaluation should be appropriate to the engine stage of development.
S-12 Powered Lift Propulsion Committee
This specification covers an aluminum alloy in the form of sheet and plate with a thickness of 0.125 to 0.499 inch (3.20 to 12.67 mm), inclusive (see 8.5).
AMS D Nonferrous Alloys Committee
This specification covers an aluminum alloy in the form of hand forgings 8 inches (203 mm) and under in nominal thickness and of forging stock (see 8.6).
AMS D Nonferrous Alloys Committee
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
This document applies to the development of Plans for integrating and managing COTS assemblies in electronic equipment and Systems for the commercial, military, and space markets, as well as other ADHP markets that wish to use this document. For purposes of this document, COTS assemblies are viewed as electronic assemblies such as printed wiring assemblies, disk drives, servers, printers, laptop computers, etc. There are many ways to categorize COTS assemblies1, including the following spectrum: At one end of the spectrum are COTS assemblies whose design, internal parts2, materials, configuration control, traceability, reliability, and qualification methods are at least partially controlled, or influenced, by ADHP customers (either individually or collectively) or by industry standards. An example at this end of the spectrum is a VME circuit card assembly. At the other end of the spectrum are COTS assemblies whose design, internal parts, materials, configuration control, and
APMC Avionics Process Management
This specification covers an aluminum alloy in the form of castings (see 8.6).
AMS D Nonferrous Alloys Committee
This specification covers a titanium alloy in the form of welding wire (see 8.5).
AMS G Titanium and Refractory Metals Committee