Browsing by Author "MacManus, David G."

Browsing by Author "MacManus, David G."

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  • Aerodynamic analysis of civil aeroengine exhaust systems using computational fluid dynamics 
    Otter, John J.; Goulos, Ioannis; MacManus, David G.; Slaby, Michal (AIAA, 2018-06-25)
    As the specific thrust of civil aeroengines reduces, the aerodynamic performance of the exhaust system will become of paramount importance in the drive to reduce engine fuel burn. This paper presents an aerodynamic analysis ...
  • Aerodynamic design of separate-jet exhausts for future civil aero engines, Part I: parametric geometry definition and CFD approach 
    Goulos, Ioannis; Stankowski, Tomasz; Otter, John; MacManus, David G.; Grech, Nicholas; Sheaf, Christopher T. (ASME, 2016-03-15)
    This paper presents the development of an integrated approach which targets the aerodynamic design of separate-jet exhaust systems for future gas-turbine aero-engines. The proposed framework comprises a series of fundamental ...
  • Aerodynamic effects of propulsion integration for high bypass ratio engines 
    Stankowski, Tomasz; MacManus, David G.; Robinson, Matthew; Sheaf, Christopher T. (AIAA, 2017-05-26)
    This work describes the assessment of the effect of engine installation parameters such as engine position, size, and power setting on the performance of a typical 300-seater aircraft at cruise condition. Two engines with ...
  • The aerodynamic effects of VHBR engine installation to the Common Research Model 
    Stankowski, Tomasz; MacManus, David G.; Robinson, Matthew (American Institute of Aeronautics and Astronautics, 2017-05-26)
    This work describes the assessment of the effect of engine installation parameters such as engine position, size and power setting on the performance of a typical 300 seater aircraft at cruise condition. Two engines with ...
  • Aerodynamic instabilities in high-speed air intakes and their role in propulsion system integration 
    Philippou, Aristia L.; Zachos, Pavlos K.; MacManus, David G. (MDPI, 2024-01-12)
    High-speed air intakes often exhibit intricate flow patterns, with a specific type of flow instability known as ‘buzz’, characterized by unsteady shock oscillations at the inlet. This paper presents a comprehensive review ...
  • Aerodynamic interference between high-speed slender bodies 
    Chaplin, Ross (Cranfield University, 2009-12)
    Significant aerodynamic interference can occur between high-speed bodies in close proximity. A complex flowfield develops where shock and expansion waves from a generator body impinge upon the adjacent receiver body. The ...
  • Aerodynamic interference for aero-engine installations 
    Stankowski, Tomasz P.; MacManus, David G.; Sheaf, Christopher T.; Grech, Nicholas (AIAA, 2016-01-02)
  • Aerodynamic Interference on Finned Slender Body 
    Chaplin, Ross; MacManus, David G.; Leopold, Friedrich; Martinez, Bastien; Gauthier, Thibaut; Birch, Trevor (American Institute of Aeronautics and Astronautics, 2016-04-28)
    Aerodynamic interference can occur between high-speed slender bodies when in close proximity. A complex flowfield develops where shock and expansion waves from a generator body impinge upon the adjacent receiver body and ...
  • Aerodynamic investigations of ventilated brake discs. 
    Parish, D.; MacManus, David G. (Professional Engineering Publishing, 2005-01-01)
    The heat dissipation and performance of a ventilated brake disc strongly depends on the aerodynamic characteristics of the flow through the rotor passages. The aim of this investigation was to provide an improved ...
  • Aerodynamic optimisation of civil aero-engine nacelles by dimensionality reduction and multi-fidelity techniques 
    Tejero, Fernando; MacManus, David G.; Hueso Rebassa, Josep; Sanchez Moreno, Francisco; Goulos, Ioannis; Sheaf, Christopher T. (Emerald, 2022-09-30)
    Purpose - Aerodynamic shape optimisation is complex due to the high dimensionality of the problem, the associated non-linearity and its large computational cost. These three aspects have an impact on the overall time of ...
  • Aerodynamic optimisation of civil aero-engine nacelles by dimensionality reduction and multi-fidelity techniques 
    Tejero, Fernando; MacManus, David G.; Hueso Rebassa, Josep; Sanchez Moreno, Francisco; Goulos, Ioannis; Sheaf, Christopher T. (Unknown, 2022-03-30)
    Aerodynamic shape optimisation is complex due to the high dimensionality of the problem, the associated nonlinearity and its large computational cost. These three aspects have an impact on the overall time of the design ...
  • Aerodynamic optimization of the exhaust system of an aft-mounted boundary layer ingestion propulsor 
    Matesanz García, Jesús; Piovesan, Tommaso; MacManus, David G. (Emerald, 2022-12-15)
    Purpose Novel aircraft propulsion configurations require a greater integration of the propulsive system with the airframe. As a consequence of the closer integration of the propulsive system, higher levels of flow distortion ...
  • Aerodynamic optimization of the exhaust system of an aft-mounted boundary layer ingestion propulsor 
    Matesanz García, Jesús; Piovesan, Tommaso; MacManus, David G. (2022-03-28)
    Novel aircraft propulsion configurations require a greater integration of the propulsive system with the airframe. As a consequence of the closer integration of the propulsive system, higher levels of flow distortion at ...
  • Aerodynamics of a compact nacelle at take-off conditions 
    Swarthout, Avery E.; MacManus, David G.; Tejero, Fernando; Matesanz García, Jesús; Goulos, Ioannis; Boscagli, Luca; Sheaf, Christopher T. (IEEE, 2023-06-08)
    Next generation ultra-high bypass ratio turbofans may have larger fan diameters than the previous generation of aircraft engines. This will potentially increase the nacelle diameter and may incur penalties to the weight ...
  • Aerodynamics of aero-engine installation 
    Stankowski, Tomasz P.; MacManus, David G.; Sheaf, Christopher T.; Grech, Nicholas (AIAA, 2016-01-02)
    Small internal combustion engines, particularly those ranging in power from 1 kW to 10 kW, propel many remotely piloted aircraft (RPA) platforms that play an increasingly significant role in the Department of Defense. ...
  • Aerodynamics of aero-engine installation 
    Stankowski, Tomasz P.; MacManus, David G.; Sheaf, Christopher T.; Christie, Robert (Sage Publications, 2016-02-24)
    This paper describes current progress in the development of methods to assess aero-engine airframe installation effects. The aerodynamic characteristics of isolated intakes, a typical transonic transport aircraft as well ...
  • The aerodynamics of aero-engine Nacalles. 
    Robinson, Matthew H. (2018-02)
    This thesis deals with the aerodynamics of aero-engine nacelles with a focus on the influence of a short and slim nacelle design on the drag performance. As turbofan engines are designed with increasingly reduced specific ...
  • Aerodynamics of propulsion system integration for modern aero-engines. 
    Stańkowski, Tomaz Piotr (2016-09)
    Over the past years, the fan diameter of a turbofan engine for commercial aircraft tended to increase and based on the requirement to improve the propulsive efficiency it is expected that the engine diameter will continue ...
  • Aerodynamics of vortex ingestion for aero-engines 
    McLelland, Grant (Cranfield University, 2013-12)
    The potential impact of inlet flow distortion on the stability and performance of aircraft engines remains a key concern for engine-airframe integration. Current and future configurations, such as Unmanned Combat Air ...
  • Analysis and control of resonant cavity flows 
    Roberts, David (Cranfield University, 2013)
    Recently, the trend for the internalisation of stores within an aircraft fuselage has led to a renewed interest in the field of cavity aero-acoustics. Many modern military aircraft, including recent unmanned combat ...