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  2. Falling weight deflectometer - Wikipedia

    en.wikipedia.org/wiki/Falling_weight_deflectometer

    FWD data is most often used to calculate stiffness-related parameters of a pavement structure. The process of calculating the elastic moduli of individual layers in a multi-layer system (e.g. asphalt concrete on top of a base course on top of the subgrade) based on surface deflections is known as "backcalculation", as there is no closed-form solution.

  3. Front-engine, front-wheel-drive layout - Wikipedia

    en.wikipedia.org/wiki/Front-engine,_front-wheel...

    This is the standard configuration of Audi and Subaru front-wheel-drive vehicles. In 1979, Toyota introduced and launched their first front-wheel-drive car, the Tercel, and it had its engine longitudinally mounted, unlike most other front-wheel-drive cars on the market at that time. This arrangement continued also on the second-generation ...

  4. Powertrain layout - Wikipedia

    en.wikipedia.org/wiki/Powertrain_layout

    The powertrain layout of a motorised vehicle such as a car is often defined by the location of the engine or motors and the drive wheels. Layouts can roughly be divided into three categories: front-wheel drive (FWD), rear-wheel drive (RWD) and four-wheel drive (4WD). Many different combinations of engine location and driven wheels are found in ...

  5. Front-mid-engine, front-wheel-drive layout - Wikipedia

    en.wikipedia.org/wiki/Front-mid-engine,_front...

    FMF layout. In automotive design, a front-mid-engine, front-wheel-drive layout (also called more simply "mid-engine, front-wheel-drive layout", and abbreviated MF or FMF) is one in which the front road wheels are driven by an internal-combustion engine placed just behind them, in front of the passenger compartment. [1] [2] [3] [4]

  6. Front-engine, four-wheel-drive layout - Wikipedia

    en.wikipedia.org/wiki/Front-engine,_four-wheel...

    F4 layout. In automotive design, an F4, or front-engine, four-wheel drive (4WD) layout places the internal combustion engine at the front of the vehicle and drives all four roadwheels. This layout is typically chosen for better control on many surfaces, and is an important part of rally racing, as well as off-road driving. In terms of racing ...

  7. Pavement engineering - Wikipedia

    en.wikipedia.org/wiki/Pavement_engineering

    Pavement engineering is a branch of civil engineering that uses engineering techniques to design and maintain flexible and rigid pavements. This includes streets and highways and involves knowledge of soils, hydraulics, and material properties. Pavement engineering involves new construction as well as rehabilitation and maintenance of existing ...

  8. Front-engine, rear-wheel-drive layout - Wikipedia

    en.wikipedia.org/wiki/Front-engine,_rear-wheel...

    FR layout. A front-engine, rear-wheel-drive layout (FR), also called Systeme Panhard [1] is a powertrain layout with an engine in front and rear-wheel-drive, connected via a drive shaft. This arrangement, with the engine straddling the front axle, was the traditional automobile layout for most of the pre-1950s automotive mechanical projects. [2]

  9. Rear-engine, front-wheel-drive layout - Wikipedia

    en.wikipedia.org/wiki/Rear-engine,_front-wheel...

    The earliest example of the form appeared in 1932, with the design and construction of the prototype Maroon Car by chief designer Harleigh Holmes at Coleman Motors, an established builder of Front- and All-Wheel-Drive vehicles based in Littleton, Colorado. [1] The car had front-wheel drive and was powered by a rear-mounted V-8 engine.