Aerodynamic shape

The second half of the cooling air flow is directed to the front end of the rotor and from there through an aerodynamically shaped annular gap to the rotor surface, forming a film of cooling air down to the second stage. A small portion of this latter air flow is diverted to the labyrinths for sealing and cooling purposes. 

Honeycomb fill in with body filler Fast restores aerodynamic shape Limited to minimal damage Fast Low... 

Honeycomb remove damage, replace with synthetic foam Restores aerodynamic shape and full compressive shape Some loss of impact strength, gain in weight Relatively quick High... 

Aerosol dynamics are based on spherical particles, a premise which almost never exists in practice. However, if there is consistency in handling the aerosol dynamics calculations, the aerodynamic diameter (see Section 13.5.2.2) that is measured gives fairly accurate predictions of aerodynamic behavior. As a result, the difference between the real shape and size of the particles and the aerodynamic shape and size is unimportant for most practical purposes. 

Inlet bells or boxes Aerodynamically shaped inlet ducts for a fan. 

In a military sense, however, the term has been applied to the shoe carrier used to launch various aerodynamic shapes and subcaliber projectiles at hypervelocity speeds... 

The MK80 GBP series is the abbreviation for a series of flying bombs whose effect is based on pressure and splitter effect. All variations of this series show an optimized aerodynamic shape so that they can be used in quick-flying fighter planes. The MK80 series consists of bombs which are predominantly composed of the explosive... 

The aerodynamic diameter dj, is the diameter of spheres of unit density po, which reach the same velocity as nonspherical particles of density p in the air stream Cd Re) is calculated for calibration particles of diameter dp, and Cd(i e, cp) is calculated for particles with diameter dv and sphericity 9. Sphericity is defined as the ratio of the surface area of a sphere with equivalent volume to the actual surface area of the particle determined, for example, by means of specific surface area measurements (24). The aerodynamic shape factor X is defined as the ratio of the drag force on a particle to the drag force on the particle volume-equivalent sphere at the same velocity. For the Stokesian flow regime and spherical particles (9 = 1, X drag... 

Particle sphericity, ip aerodynamic shape factor, x- crystal density, p aerosolized powder bulk density, pg volume mean diameter, dy aerodynamic mean volume diameter, d total (Hildebrand) solubility parameters of the cohesive (drug-drug), 6c, and adhesive (drug carrier), 6a, interactions. 

In one sense, launching a rocket from the moon is easier than launching it from Earth. The moon has only about one-sixth the gravitational pull of our planet. Furthermore, since there is no air on the moon, air friction won t slow the rocket down after launch. That s why the lunar lander s engineers did not have to give their creation a sleek, aerodynamic shape, as they would have if the rocket was intended for an Earth launch. In fact, the thing looked more like a strange bug than a rocket. 

The airflow through the face may range between 75 and 100 fpm. An aerodynamic shape at the entrance or suction slots near the edge to ensure the flow of air is inward aids in the performance of the cabinet, while a baffle at the rear provides that some of the inlet air will flow directly across the work surface as the remainder is drawn upward through the cabinet to the exhaust portal. It is primarily the directional flow of air which ensures that the agents of concern stay within the cabinet. 

Figure 6 illustrates the basic laser cutting process. The beam is applied directly to the material at a predetermined focal height. Coaxial with the beam flow, the assist gas passes through an aerodynamically shaped nozzle. This assist gas jet supports the heating (burning with O2) of the material and removes the... 

Thin or aerodynamic shapes Sportswear, lightweight clothing... 

To gain an indication of the most suitable aerodynamic shape for the cab a number of full-scale trials were undertaken using a mock-up cab fitted to the front of a conventional electric locomotive. The experimental cab was constructed from single-skin GRP and its nose angle, when fitted to the locomotive, made adjustable. Pressure sensing equipment was installed in the locomotive to record the optimum cab position under a variety of operating conditions tests indicated that an angle of 40° to the vertical was the most satisfactory. 

The heart of the eompander is the design of the impellers. A high performance aerodynamic shape for eaeh expander and compressor impeller is defined using Computational Fluid Dynamics (CFD). Finite Element Analysis (FEA) verified acceptable stresses due to speed and blade loading, and defined an operating zone free from destructive natural frequencies. This work was verified by outside consultants. 

To harness the force of the wind a converter (the rotor blades) is required to turn the kinetic energy of the wind into operational energy) (mechanical energy) and this into electricity and/or heat. The rotor blades have aerodynamic shapes, to enable them to rotate efhciently, and thus extract a power of ... 

The same principles can be applied to panels which butt together, in order to produce a completely smooth profile. In effect, we have two adjacent lap joints (Fig. 45) and this is a common joint used, for example, in the construction of buildings or aerodynamic shapes. 

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