Browsing by Author "Lefebvre, A. H."

Browsing by Author "Lefebvre, A. H."

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  • Airblast atomization : the effect of linear scale on the mean drop size 
    El-Shanawany, M. S. M. R. (1978-12)
    Stationary prefilming-cup airblast atomizers, in which the fuel is first spread into a thin cylindrical sheet and then exposed on both sides to high velocity air, have several important advantages over other common methods ...
  • An experimental study of an air-blast atomiser 
    Bryan, R. H. (1967-10)
    Visual observations and an optical method of measuring the mean droplet size in sprays have been used to assess the performance of a prototype airblast atomiser, particularly at the low fuel and air flow conditions ...
  • Factors controlling gas turbine combustion performance at high pressure 
    Lefebvre, A. H. (Factors controlling gas turbine combustion performance at high pressure, 1965-02)
    In the post most of the research work carried out in gas turbine combustion was mainly concerned with performance problems arising at high altitudes. these were primarily problems of trying to achieve high combustion ...
  • Flame radiation & smoke emissions in gas turbine combustors 
    Russell, D. T. (1969-09-19)
    The objective of this thesis was to investigate flame radiation and smoke emission phenomena in a combustor typical of those in use in aircraft gas turbine engines. One of the primary aspects of the investigation was ...
  • The influence of air and liquid properties on airblast atomization 
    Rizkalla, A. A. (Cranfield University, 1974-09-01)
    This thesis reports the results of a detailed programme of research on airblast atomization carried out using a specially designed atomizer in which the liquid is first spread into a thin sheet and then exposed on both ...
  • Influence of liquid properties on plain-jet airblast atomization 
    Lorenzetto, G. E. (1976-04)
    This thesis reports the results of a detailed programme of research on airblast atomization carried out using a specially designed plain-jet atomizer in which the fuel is injected into a high velocity airstream in the ...
  • The influence of swirler design parameters on the aerodynamics of downstream recirculation region 
    Kilik, Erol (Cranfield University, 1976-05)
    The influence of swirler design parameters namely, vane shape (flat or curved), vane outlet angle, aspect ratio and space-to-chord ratio (number of vanes), on the pressure drop-mass flow characteristics and the size and ...
  • The influence of turbulence on the structure and propagation of enclosed flames 
    Lefebvre, A. H.; Reid, R. (College of Aeronautics, 1966-01)
    Although it has long been established that burning rates can be appreciably increased by turbulence, the actual extent of this increase and the precise mechanism involved are still far from clear. The object of the present ...
  • Some experimental techniques in the study of flame stabilization 
    Norster, E. R.; Lefebvre, A. H. (College of Aeronautics, 1964-02)
    The purpose of this note is to describe one or two techniques which are currently being used at Cranfield in various investigations into the effects of flameholder geometry and flow parameters on the process of flame ...
  • Spark ignition studies in flowing liquid fuel-air mixtures 
    Rao, K. V. L. (Cranfield University, 1974-03)
    The thesis describes a programme of research to determine ignition energy requirements in flowing kerosene spray air mixtures under various flow conditions such as velocity, mixture strength, spray mean drop size and drop ...
  • Theoretical aspects of aero-engine altitude relighting performance 
    Lefebvre, A. H. (College of Aeronautics, 1968-03)
    The purpose of this note is to review some current theories of ignition in stagnant and flowing mixtures, and to present an alternative theory to describe the process that occurs in a turbojet combustion chamber when ...
  • Theoretical aspects of gas turbine combustion performance 
    Lefebvre, A. H. (College of Aeronautics, 1966-08)
    A correlating parameter for gas turbine combustion performance, based on a 'burning velocity' theory for primary zone combustion is derived using a more direct approach than that originally employed by Greenhough ...