TRANSPORT MEDIUM POLLUTING FACTORS. PROCEDURES FOR ATTENUATION OF NOCIVE EFFECTS

The work shall be have some ways of analysis of the chemistry of internal combustion engines of the means of transport. The results obtained allow the assessment variation in time of noise nuisance concentrations in the atmosphere free.

Keywords: gas diffusion, concentration, diffusion coefficient, concentration gradients, pollutant cloud, noxious effects, finite element Cuvinte cheie: difuzia gazelor, concentraţie, coeficient de difuzie, gradienţi de concentraţie, nor poluant, efecte nocive, elemente finite

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IMPROVEMENT OF THERMAL PERFORMANCE OF FLAT PLATE SOLAR COLLECTORS WITH PLAIN AIR BY USING HONEYCOMB STRUCTURES
The paper presents methods to improve the efficiency of solar collectors planning which reduce the losses caused by the transfer of heat radiative and convective between absorbent surface and environment.
Keywords: solar collector, radiation transfer, convective transfer, stagnation point, calotte fluid, energy efficiency
Cuvinte cheie: colector solar, transfer radiativ, transfer convectiv, punct de stagnare, fluid caloportor, randament energetic

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PARTICULARS RELATING TO SPEED DISTURBANCES AROUND BODIES FLYING THIN ATMOSPHERE

               The paper presents a contribution to the aerodynamic body of revolution movement trajectories in the thin atmosphere. As a particular case, the paper refers to flying projectiles and missiles, to customize linarite stationary movements around thin bodies of revolution.

Key words: projectile, rocket, potential speeds, Mach number, angle of attack

Cuvinte cheie: proiectil, rachetă, potenţialul vitezelor, numărul Mach, unghi de atac

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ASPECTS CONCERNING THE CHARACTERISTICS OF THE
LAYER LIMIT THE HEAT SHIELD AT THE ROCKET MOTORS
The work addresses the results of recent research on the influence of
the characteristics of the layer thermal limit on energy yields of the motors
missile.
Keywords: gas jet, thermal boundary layer, engine rocket, nozzle, heat
transfer, Reynolds number
Cuvinte cheie: jet de gaze, strat limită termic, motor rachetă, ajutaj,
transfer termic, număr Reynolds

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CONSIDERATIONS FOR USE CUMULATIVE EFFECT
OF GAS STREAMS PUNCTURE ARMOR
This paper presents an application of the linear characteristics of the fumes generated by the chemical reaction of burning of explosives, the cumulative effect. By directing the energy of the explosion we obtain a jet of gas able to penetrate machines fight casings.
Keywords: jet gas, explosive, cumulative jet, armour, fighting machine, surge, movement potential
Cuvinte cheie: jet de gaze, exploziv, jet cumulativ, blindaj, maşină de luptă, undă de şoc, mişcare potenţială

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CONSIDERATIONS ON GAS FLOW THROUGH SMALL
DIAMETER TUBES
The paper refers to the study of movement of gas through small
diameter tubes. It customizes the case when the movement is considered onedimensional
mass-exchange, heat and mechanical work outside. Research
results are a tool in the design of small diameter pipes weapons.
Keywords: mass flow, one-dimensional motion, ballistics, power line
Cuvinte cheie: debit masic, mişcare unidimensională, balistică, linie de curent

86 CONSIDERAŢII PRIVIND CURGEREA GAZELOR

ASPECTS OF THE ANALYSIS OF NUISANCES OF
POLLUTION PRODUCED BY MEANS OF TRANSPORT
The work shall be having some ways of analysis of the chemistry of
internal combustion engines of the means of transport. The results obtained
allow the assessment variation in time of noise nuisance concentrations in the
atmosphere free.
Cuvinte cheie: difuzia gazelor, concentraţie, coeficient de difuzie,
gradienţi de concentraţie, nor poluant, elemente finite
Key words: diffusion, gas concentration, diffusion coefficient, the
concentration gradients, cloud, finite elements

39 ASPECTE PRIVIND ANALIZA FENOMENELOR DE POLUARE PRODUSĂ DE MIJLOACELE DE TRANSPORT

The paper presents a contribution to the aerodynamic body of
revolution movement trajectories in the thin atmosphere. As a particular case,
the paper refers to flying projectiles and missiles, to customize linearization
stationary movements around thin bodies of revolution.
Cuvinte cheie: proiectil, rachetă, potenţialul vitezelor, numărul Mach,
unghi de atac
Keywords: projectile, rocket, potential speed, Mach number, angle of
attack

12 UNELE PARTICULARITĂŢI PRIVIND FENOMENELE