Optimization of a Light Aircraft Spark-Ignition Engine

Luongo, Andrea; Nuccio, Patrizio; Vignoli, Marcello

doi:10.4271/2006-01-2420

Cited by 5 publications

(1 citation statement)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Performance modeling of internal combustion engines (ICEs) is very important for matching the most suitable engine with the aircraft. Luongo et al developed a numerical one-dimensional model using six different engine layouts (one of them is Rotax 912 ULS) to find the highest power to weight ratio and least voluminous configuration (Luongo et al, 2006). Grabowski et al (2019) developed a one-dimensional engine model in AVL Boost software enabling the simulation of airflow through the inlet pipes, carburetors, valves and combustion process (Grabowski et al, 2019).…”

Section: Analytical Modelling Of Piston Enginementioning

confidence: 99%

Emissions prediction of an aero-piston gasoline engine during surveillance flight of an unmanned aerial vehicle

Dinç

Ötkür

2020

AEAT

View full text Add to dashboard Cite

Purpose The purpose of this study is to perform the preliminary design, flight performance and exhaust emissions calculations of a piston engine powered unmanned aerial vehicle (UAV) during a flight cycle which consists of multiple flight altitudes and airspeeds. Design/methodology/approach A genuine computer model in Matlab/Simulink was developed to predict the size and weight of UAV and piston engine (using Avgas 100LL fuel) performance together with exhaust emissions in an iterative process. Findings The amount of emitted exhaust gases including carbon dioxide, carbon monoxide, hydrocarbons and nitrogen oxides were calculated in a typical UAV mission profile as a whole and also divided into mission flight segments. Research limitations/implications Emissions were calculated based on fuel flow and engine speed inputs based on ground test data for emission indices. Test data for emission indices was very limited. Practical implications As UAV utilization has been increasing around the world, this study presents important and noticeable results on the emissions that need to be considered for environmental purposes. Originality/value In literature, emission prediction studies for UAVs are very rare. In fact, UAVs typically have quite different flight speeds and altitudes than regular manned aircraft and emissions change with speed and altitude. Additionally, unlike manned aircraft, UAVs can fly more than 24 h with different operation characteristics. The originality of this study presents the emission predictions of a piston engine UAV which flies with a significantly different mission profile than a manned aircraft.

show abstract

Section: Analytical Modelling Of Piston Enginementioning

confidence: 99%

Emissions prediction of an aero-piston gasoline engine during surveillance flight of an unmanned aerial vehicle

Dinç

Ötkür

2020

AEAT

View full text Add to dashboard Cite

show abstract

Performance prediction of aircraft gasoline turbocharged engine at high-altitudes

Mansouri

Ommi

2019

Applied Thermal Engineering

View full text Add to dashboard Cite

A Method for Predicting the Aeroelastic Response of Radial Turbomachines

Fellows

Iskandar

Bodony

et al. 2023

Journal of Turbomachinery

View full text Add to dashboard Cite

Aircraft intermittent combustion engines often incorporate turbochargers adapted from ground-based applications to improve their efficiency and performance. These turbochargers can operate at off-design conditions and experience blade failures brought on by aerodynamic-induced blade resonances. A reduced-order model of the aeroelastic response of general fluid-structural configurations is developed using the Euler-Lagrange equation informed by numerical data from uncoupled computational fluid dynamic (CFD) and computational structural dynamic calculations. The structural response is derived from a method of assumed-modes approach. The unsteady fluid response is described by a modified version of piston theory that approximates the local transient pressure fluctuation in conjunction with steady CFD solution data. The reduced-order model is first applied to a classical panel flutter scenario and found to predict a flutter boundary that compares favorably to the boundary identified by existing theory and experimental data. The model is then applied to the high-pressure turbine of a dual-stage turbocharger. The model predictions are shown to reliably determine the lack of turbine blade flutter, and rudimentary damping comparisons are performed to assess the ability of the model to ascertain the susceptibility of the turbine to forced response. Obstacles associated with the current experimental state of the art that impinge upon further numerical validation are discussed.

show abstract

Optimization of a Light Aircraft Spark-Ignition Engine

Cited by 5 publications

References 4 publications

Emissions prediction of an aero-piston gasoline engine during surveillance flight of an unmanned aerial vehicle

Emissions prediction of an aero-piston gasoline engine during surveillance flight of an unmanned aerial vehicle

Performance prediction of aircraft gasoline turbocharged engine at high-altitudes

A Method for Predicting the Aeroelastic Response of Radial Turbomachines

Contact Info

Product

Resources

About