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Desert RATS
Desert RATS, short for Desert Research and Technology Studies (D-RATS), is a NASA field-test program that exercises prototype rovers, spacesuits, and operations in Arizona's high desert.
Desert Road (New Zealand)
The Desert Road is a 46-kilometer stretch of State Highway 1 in New Zealand's North Island, crossing the Rangipo Desert east of Mount Ruapehu between Waiōuru and Tūrangi.
Desert Tech WLVRN
The Desert Tech WLVRN, pronounced "Wolverine," is a semi-automatic, multi-caliber bullpup rifle by Desert Tech of Utah, introduced at SHOT Show 2024 as successor to the MDRX.
Desiccant cooling
Desiccant cooling is an air-conditioning method in which a hygroscopic desiccant removes water vapor from incoming air, which is then cooled by an evaporative cooler or air conditioner.
Desiccant dehumidifier
A desiccant dehumidifier removes moisture from air by adsorbing water vapor onto a desiccant, such as silica gel, instead of condensing it on a cold surface.
Design
Design is a plan or specification for constructing an object, system, or activity, or the realized result, spanning architecture, engineering, software, and the applied arts.
Design A-150 battleship
Design A-150, popularly the Super Yamato class, was a planned Imperial Japanese Navy battleship class succeeding the Yamato class, armed with six 51 cm guns.
Design and performance of immersed tube tunnels
Design of immersed tube tunnels must keep prefabricated elements buoyant during installation but permanently submerged, with watertight joints, seismic resilience, and accommodation of settlement in soft alluvial soils.
Design Automation Conference
The Design Automation Conference (DAC) is the flagship annual conference of the electronic design automation field, sponsored by ACM and IEEE and founded in 1964.
Design brief
A design brief is the written document recording a client's goals, requirements, and constraints for a building project before design begins; problems in buildings often trace back to it.
Design by contract
Design by contract (DbC), or programming by contract, is a software development method formulated by Bertrand Meyer in 1986, where components carry formal preconditions, postconditions, and class invariants.
Design development
Design development is the second major phase of the architectural design process, refining the approved schematic design into a coordinated solution covering structural, mechanical, electrical, and plumbing systems.
Design engineer
A design engineer is an engineer who conceives, models, analyzes, and documents products or systems so they can be manufactured, a job title reported most often under mechanical engineers.
Design flood
A design flood is the flood magnitude a hydraulic structure or protected area is designed to accommodate safely, stated as a peak flow, volume, or water level.
Design for additive manufacturing
Design for additive manufacturing (DfAM) is the practice of designing parts to exploit additive manufacturing's capabilities while respecting constraints like overhang limits, build size, and powder removal.
Design for assembly
Design for assembly (DFA) is a manufacturing engineering method that guides product design to reduce part count, assembly time, and cost, pioneered by Boothroyd and Dewhurst.
Design for disassembly
Design for disassembly (DfD) is a design approach that plans products so they can be taken apart at end of life for reuse and recycling.
Design for environment
Design for environment, also called ecodesign, is the practice of integrating environmental aspects into product design and development to reduce environmental impacts throughout a product's life cycle, from raw materials to disposal.
Design for manufacturability
Design for manufacturability (DFM), in quantitative form DFMA, is an engineering methodology that shapes parts and assembly for cheaper manufacture; design fixes about 80% of manufacturing cost.
Design for test
Design for test, also called design for testability, is the practice of designing integrated circuits so they are easier and cheaper to test after fabrication.
Design for testability
Design for testability (DFT), also called design for test, is an engineering discipline that builds test structures into circuits during design so post-manufacturing testing is thorough and economical.
Design for testing
Design for testing (DFT) is a set of circuit design techniques that make hardware faults detectable after manufacture, using scan chains, ATPG, and built-in self-test.
Design for X
Design for X (DFX), also read as Design for Excellence, is a family of engineering methodologies that optimize one aspect of a product design, such as manufacturability, assembly, or reliability.
Design freeze
A design freeze is a project milestone at which a product's design is formally locked; later changes require formal change control, since modifications after the freeze grow far more costly.
Design of the FAT file system
The design of the FAT file system describes the File Allocation Table family used from MS-DOS onward, designed and coded by Marc McDonald at Microsoft in 1977.
Design Patterns
Design Patterns, also known as the Gang of Four book, is a 1994 software book cataloging 23 reusable object-oriented design patterns by Gamma, Helm, Johnson, and Vlissides.
Design rule checking
Design rule checking (DRC) is an automated verification step in electronic design automation that tests whether an integrated circuit layout obeys the geometric restrictions a foundry imposes for manufacturing.
Design space exploration
Design space exploration (DSE) is an engineering method that systematically generates and evaluates design alternatives against objectives and constraints, returning the Pareto-optimal front of non-dominated solutions.
Design speed
Design speed is a selected speed used to determine the geometric design features of a roadway, first proposed in 1936 and defined by AASHTO's Green Book since 2001.
Design sprint
A design sprint is a time-boxed workshop method that takes a product team from a framed problem to a prototype tested with real users in about a week.