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Aeronautic systems

 

News

CSIR Research Space is constantly being developed and populated. Please report any errors to Adele van der Merwe. Constructive criticism and suggestions would be welcome.

Recent Submissions

  • Vallabh, Bhavya; Skews, BW (South African Institution of Mechanical Engineering (SAIMECHE), 2017-09)
    The existing nozzle contour profiles of the CSIR’s supersonic or High Speed Wind Tunnel (HSWT) produce weak waves in the test section region, which effectively degrades the air flow quality in the test section. This paper ...
  • Pieterse, FF; Bidgood, Peter M; Vaz, NF (South African Institution of Mechanical Engineering (SAIMECHE), 2017)
    The requirements that a wind tunnel balance need to satisfy have become increasingly stringent. These requirements, as set out by the wind tunnel testing community, include: improved static force accuracy and resolution, ...
  • Johnston, C (Rapid Product Development Association of South Africa (RAPDASA), 2015-11-04)
    The first Additive Manufacturing (AM) non-load-bearing, client furnished part was used in the CSIR’s wind tunnels in 2007. The advent of metal-grown materials, and the acquisition of machines to grow them in South Africa, ...
  • Makita, C; Chimuka, L; Steenkamp, Paul; Cukrowsk, E; Madala, E (Elsevier, 2016-07)
    Moringa species are multipurpose plants with nutritional, medicinal and industrial benefits. The flavonoids content of Moringa oleifera and Moringa ovalifolia was studied using an Ultra high-performance liquid chromatography ...
  • Bidgood, Peter M (American Institute of Aeronautics and Astronautics, 2017-01)
    The estimation of balance uncertainty using conventional statistical and error propagation methods has been found to be both approximate and laborious to the point of being untenable. Direct Simulation by Monte Carlo (DSMC) ...
  • MacLucas, David A; Gledhill, Igle MA (SAIP, 2014-07)
    Computational Fluid Dynamics is routinely used in clearance of stores for carriage and release from aircraft in the transonic range of flight. A well-known validation case is modelled in this study, for which aerodynamic ...
  • Gledhill, Irvy MA; Roohani, H; Forsberg, K; Eliasson, P; Skews, BW; Nordström, J (Springer Verlag, 2016-02)
    Most computational fluid dynamics simulations are, at present, performed in a body-fixed frame, for aeronautical purposes. With the advent of sharp manoeuvre, which may lead to transient effects originating in the acceleration ...
  • Gledhill, Irvy MA; Roohani, H; Biobaku, A; Skews, B (SA Institute of Physics, 2016-06)
    Theoretical work on transforming the Navier-Stokes equations into arbitrarily accelerating frames has included the continuity, momentum, and energy conservation equations. An analysis of the momentum equation in non-dimensional ...
  • Gledhill, Irvy MA; Butcher, G (AIP Conference proceedigs, 2014-08)
    Research has shown that companies with more diversity and a better workplace perform better. So what makes a good workplace in physics, where women and men can work to their full potential? In the Improving the Workplace ...
  • Van Zyl, Lourens H (2015-09)
    Aeroelasticity is often described as the study of the interaction of inertial, elastic and aerodynamic forces that occur when an elastic body is exposed to a fluid flow (Wikipedia). The aim of a flutter analysis is to ...
  • De Ponte, JD; Pieterse, FF; Bidgood, Peter M (2014-05)
    In order to meet the increasingly stringent requirements for wind tunnel balances, as expressed by the wind tunnel testing community, balance design philosophy needs to be further expanded to include alternative sensor, ...
  • Tuling, S; Vallabh, Bhavya; Morelli, Mauro F (Cambridge University Press, 2015-04)
    A numerical study of the flow topologies over the 60° delta wing of the AGARD-B model at Mach 0·80 has revealed that vortex bursting occurs between 13°-15° angle-of-attack, while vortex separation occurs above 18°. These ...
  • Meyers, Bronwyn C (2015-10)
    This study involves the redesign of the combustor liner for a 200N mini gas turbine engine using first principles and the design methods of the NREC series as shown in Figure 1. The combustor design was performed using ...
  • Suliman, Ridhwaan; Peake, N (Not available, 2015-07)
    The deformation of slender elastic structures due to the bulk motion of fluid around it is a common multiphysics problem encountered in many applications. In this work we implement two computational FSI approaches in a ...
  • Steele, A; Treurnicht, J (IEEE, 2015-11)
    The use of unmanned aerial systems (UAS) is on the rise with an array of industries finding use for them in a variety of applications. This review hopes to assist potential drone designers in selecting the drone best suited ...
  • Botha, JDM; Dala, L; Schaber, S (Techno Press, 2015)
    This study aimed to observe the effect of a novel concept (referred to as the flap extension) implemented on the leading edge of the flap of a three element high lift device. The high lift device, consisting of a flap, ...
  • Barker, D (IASSA 2015, 2015-09)
    Des Barker test flies the turbopropconverted FOCKE WULF PIAGGIO P149D-TP This flight test report presents a limited overview of some of the results of the flight test programme conducted on the Piaggio P149D TP aircraft ...
  • Meijer, M-C; Dala, L (International Forum on Aeroelasticity and Structural Dynamics (IFASD), 2015-06)
    The basis of linear piston theory in unsteady potential flow is used in this work to develop a quantitative treatment of the validity range of piston theory. In the limit of steady flow, velocity perturbations from Donov’s ...
  • Meijer, M-C; Dala, L (Elsevier, 2015-08)
    An aeroelastic prediction framework in MATLAB with modularity in the quasi-steady aerodynamic methodology is developed. Local piston theory (LPT) is integrated with quasi-steady methods including shock-expansion theory and ...
  • Beharie, MM; Pedro, JO; Dala, L (Cambridge University Press, 2015)
    This paper presents the design, development and construction of a flight test stand for a quadrotor UAV. As opposed to alternate forms of UAV, the power plant in the case of the quadrotor serves a dual purpose of control ...

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