Film is also classified according to its gauge and the arrangement of its perforations — gauges range from 8 mm to 70 mm or more, while perforations may vary in shape, pitch, and positioning.

Extra cushioning is often added for comfort ( to control the shape, moisture, or smell of the shoe ) or health reasons ( to help deal with defects in the natural shape of the foot or positioning of the foot during standing or walking ).

Although the rule still applies, the visible fuselage " waisting " can only be seen on a few aircraft, such as the B-1B Lancer, Learjet 60, and the Tupolev Tu-160 ' Blackjack ' — the same effect is now achieved by careful positioning of aircraft components, like the boosters and cargo bay on rockets ; the jet engines in front of ( and not directly below ) the wings of the Airbus A380 ; the jet engines behind ( and not purely at the side of ) the fuselage of a Cessna Citation X ; the shape and location of the canopy on the F-22 Raptor ; and the image of the Airbus A380 above showing obvious area rule shaping at the wing root, which is practically invisible from any other angle.

The pre-First World War cars had a distinctive front shape caused by positioning the radiator behind the engine to give a so-called " coalscuttle " bonnet.

Haruspicy was part of a larger study of organs for the sake of divination, called extispicy, paying particular attention to the positioning of the organs and their shape.

Gibson's product positioning language and Cayce's analysis of consumerist trends show that society is not a victim of consumerism, but rather its creator who helps shape it without ever stepping outside it.

The gores were shaped by positioning in a 211, 000 liter tank of water with three carefully orchestrated sets of underwater explosions to shape each gore.

Barney uses video to perfect his sculpture by evaluating positioning, lighting, size and shape, using video as a means to his end product of sculpture Barney ’ s long-time collaborator Jonathan Bepler composed and arranged the films ’ soundtracks.

In text figures, the shape and positioning of the numerals vary as those of lowercase letters do.

This is because the uniform shape of the pieces in the Rubik's Cube allows one to focus on positioning a small subset of pieces while disregarding the rest, at least at the beginning of a solution.

This video shows engineers adjusting the complex support mechanisms that control the shape and positioning of two of the 798 segments that will form the complete primary mirror of the telescope.

The cars do not have the blue roof line, however each car has a series of Sea Turtle Fins, or Splotches, which vary in shape, color, and positioning depending on the class of car it is ( Coach Class, Cafe Bistro, and First Class ).

# lateral consonant | lateral This feature designates the shape and positioning of the tongue with respect to the oral tract.

* Part 1027 – Contextual shape positioning

Its four-stroke cycle takes place in a space between the inside of an oval-like epitrochoid-shaped housing and a rotor that is similar in shape to a Reuleaux triangle but with sides that are somewhat flatter.

The theoretical shape of the rotor between the fixed corners is the result of a minimization of the volume of the geometric combustion chamber and a maximization of the compression ratio, respectively.

The symmetric curve connecting two arbitrary apexes of the rotor is maximized in the direction of the inner housing shape with the constraint that it not touch the housing at any angle of rotation ( an arc is not a solution of this optimization problem ).

It transfers fluid by means of the progress, through the pump, of a sequence of small, fixed shape, discrete cavities, as its rotor is turned.

The cavities move when the rotor is rotated but their shape or volume does not change.

An airfoil ( in American English ) or aerofoil ( in British English ) is the shape of a wing or blade ( of a propeller, rotor or turbine ) or sail as seen in cross-section.

* airfoil or aerofoil ( British English ), shape of a wing or blade ( of a propeller, rotor or turbine ) or sail as seen in cross-section

The rotor is mounted offset in a larger housing which can be circular or a more complex shape.

Sedimentation depends on mass, shape, and partial specific volume of a macromolecule, as well as solvent density, rotor size and rate of rotation.

Disadvantages of this design include the requirement that rotor tips seal very tightly on the outer housing wall and the mechanical losses suffered through friction between rapidly oscillating parts of irregular shape.

At the time, rotor blades ( rotary wings ) were built in the same fashion that fixed wings were, consisting of a long tubular steel spar with stringers ( or more accurately ribs ) set on them to provide the aerodynamic shape that was then covered with a stressed skin.

The flat or axial flux type, used where there are space or shape limitations, uses stator and rotor plates, mounted face to face.

However the rotor is different in shape and material, because at synchronous speed it is designed to magnetize and become a permanent magnet.

An arbitrarily shaped rigid rotor is a rigid body of arbitrary shape with its center of mass fixed ( or in uniform rectilinear motion ) in field-free space R < sup > 3 </ sup >, so that its energy consists only of rotational kinetic energy ( and possibly constant translational energy that can be ignored ).

Thickness noise is dependent only on the shape and motion of the blade, and can be thought of as being caused by the displacement of the air by the rotor blades.

Looking down on the rotor from above, a two-scoop machine would look like an " S " shape in cross section.

The shape of the chamber has a marked effect on power output, efficiency and emissions ; the designer's objectives are to burn all of the mixture as completely as possible while avoiding excessive temperatures ( which create NOx ).

Output ranged from 145 to 175 hp ( 108 and 130 kW respectively ), depending on exhaust system, emissions controls, compression ratio, intake runner shape ( earlier models had round intake runners and later models had D-shaped intake runners ), and ECU tuning.

The forge fire in this type of forge is controlled in three ways: amount of air, volume of fuel, and shape of the fuel / fire.

The actual fuel cell stack is the layered cube shape in the center of the image

The shape produces a small, hot area at the bottom which allows some of the food to be seared by intense heat while using relatively little fuel.

In general, candy propellants are an oxidizer ( typically potassium nitrate ) and a sugar fuel ( typically dextrose, sorbitol, or sucrose ) that are cast into shape by gently melting the propellant constituents together and pouring or packing the amorphous colloid into a mold.

Floats can be made of different materials, such as sheet brass soldered into a hollow shape, or of plastic ; hollow floats can spring small leaks and plastic floats can eventually become porous and lose their flotation ; in either case the float will fail to float, fuel level will be too high, and the engine will not run unless the float is replaced.

Various rockets have used pressure-stabilized monocoque designs, including Atlas and Falcon I. Atlas was very light weight since its sole structural support was provided by its single-wall steel " balloon " fuel tanks, which held their shape by internal pressure.

Improving the shape and aerodynamics of a car is a good way to help better the fuel economy and also improve handling at the same time.

The point and therefore the mass where criticality occurs may be changed by modifying certain attributes such as fuel, shape, temperature, density and the installation of a neutron-reflective substance.

This shape allows a small pool of cooking oil in the center of the wok to be heated to a high heat using relatively little fuel, while the outer areas of the wok are used to keep food warm after it has been fried in the oil.

The 4 conditions that need to be achieved for ignition to take place are: " The imploding fuel must maintain its spherical shape ; it must achieve a certain speed ; the amount of mixing between the fuel and the capsule material must be kept low ; and the entropy of the system must be kept down — in other words, the energy applied needs to be focused on compressing the fuel and not raising its temperature, which would impede compression ".

Through the use of the lifting body shape, composite liquid fuel tanks, and the aerospike engine, NASA and Lockheed Martin hoped to test fly a craft that would demonstrate the viability of a single-stage-to-orbit ( SSTO ) design.

The shape and porting of the chambers allowed for more complete atomization of the air / fuel mixture, as well as contributing to more complete combustion ; these virtues allowed for much greater efficiency of the engine as a whole.

The first year version ( 1954 ) of the 175 Sport featured a beautifully sculpted fuel tank that quickly earned it the unofficial nickname " Disco Volante " (" flying saucer ") as, viewed from the front, the tank shape was reminiscent of a flying saucer.

As well, the fuel tank shape was completely different from the B / C models and more in keeping with the " chopper " look.

This Model also had the North America only " Chopper Styling " which was the raised and swept back ( Chopper ) handlebars, the fuel tank had a rounder shape and the saddle much more sculptured.

) Inside the layer of fuel is the " spark plug ", a hollow column of fissile material ( plutonium-239 or uranium-235 ) which, when compressed, can itself undergo nuclear fission ( because of the shape, it is not a critical mass without compression ).

The Flamethrower, Portable, No 2 ( nicknamed Lifebuoy from the shape of its fuel tank ), also known as the Ack Pack, was a British design of flamethrower for infantry use in the Second World War.