Jet CAT P80 Thermal Analyses and Performance Assessment Using Different Fuels Types

Cican, Grigore; Toma, Adina Cristina; Puşcaşu, Cristian; Catană, Răzvan Marius

doi:10.1007/s11630-018-1026-z

Cited by 13 publications

(7 citation statements)

References 2 publications

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“…The test rig together with the engine were distributed by GUNT Hamburg [32]. This turbojet engine has been used in the past for multiple experiments and research studies [33,34].…”

Section: Experimental Test Benchmentioning

confidence: 99%

Experimental Investigation of a Micro Turbojet Engine Chevrons Nozzle by Means of the Schlieren Technique

Cican,

Gall,

Bogoi

et al. 2023

Inventions

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In connection with subsonic jet noise production, especially regarding the hot jet from a micro turbojet engine, we encountered a lack of recent high-resolution data in the literature describing the flow field using experimental validation through optical diagnoses. The objective of this paper is to examine and compare the influence on shear layers of the exhaust plug nozzle of a micro turbojet engine with and without chevrons mounted, using a high-speed camera used in Schlieren-type optical system diagnosis. Three different operating regimes are examined for both the baseline configuration and the configuration with 16 triangular-shaped chevrons. In conjunction with the image captures, the sound pressure level was recorded with the help of a microphone placed perpendicular to the flow, 0.4 m from the exhaust of the nozzle which was further processed. In quantitative terms, we found that the OASPL decreases by more than 1% when the engine is operating at higher regimes. Moreover, we found that the average exhaust jet angle, which is a measure of the quality of the fluid mixing layer is increased by 5% with respect to the baseline nozzle. By using the “darkest pixel” technique in Schlieren imaging, we can verify experimentally, for all working regimes, the theory that asserts that subsonic jet noise is a consequence of fine-scale homogeneous turbulence. Additionally, the potential novelty lies in the specific observations related to consistent dispersion of fine-scale eddies and how the presence of chevrons amplifies this uniformity within the turbulent field.

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“…The test rig together with the engine were distributed by GUNT Hamburg [32]. This turbojet engine has been used in the past for multiple experiments and research studies [33,34].…”

Section: Experimental Test Benchmentioning

confidence: 99%

Experimental Investigation of a Micro Turbojet Engine Chevrons Nozzle by Means of the Schlieren Technique

Cican,

Gall,

Bogoi

et al. 2023

Inventions

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“…Some studies have attempted blends of diesel and kerosene or pure diesel in microengines [40], emphasizing a comparative performance. It is known that, compared to kerosene, diesel has some disadvantages, among which one of the most significant is its much higher freezing point than that of kerosene [41][42][43].…”

Section: Introductionmentioning

confidence: 99%

Experimental Transient Process Analysis of Micro-Turbojet Aviation Engines: Comparing the Effects of Diesel and Kerosene Fuels at Different Ambient Temperatures

Cican

2024

Energies

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In this paper, we investigate the impact of diesel and kerosene on the transient processes occurring in a micro-turbojet aviation engine. The experiments were conducted under two distinct ambient temperature conditions, 0 and 20 °C. Specifically, we analyzed the starting phase of the micro-engine while operating with kerosene and diesel at both ambient temperature settings. Comparative graphs were generated, and the starting time was meticulously examined. Subsequently, we constructed performance maps for the engine using both fuels and across the two ambient temperature scenarios. We then executed a transient process, comprising sudden acceleration and deceleration, under the aforementioned ambient temperature conditions and with both fuels. The fluctuations in temperature within the combustion chamber, thrust force, and fuel consumption are presented for both rapid acceleration and deceleration events. Furthermore, we conducted comparisons between the thrust force, fuel flow rate, combustion chamber temperature, and specific fuel consumption for the two fuels tested and under the two ambient temperature conditions, both during idle and at higher engine regimes. In the idle regime at 0 °C, the kerosene flow is about 0.78% higher than diesel, with the kerosene thrust approximately 1.92% greater. At 20 °C, the kerosene consumption rises by roughly 5.56% compared to diesel, while the thrust increases by about 1.38%. It was observed that at the maximum operating regime, at 0 °C, the kerosene flow exceeds diesel by around 6%, with the kerosene thrust slightly higher, by about 0.63%. At 20 °C, the kerosene consumption rises by roughly 13.19% compared to diesel, while the thrust increases by about 5.91%. In higher regimes, the kerosene consumption surpasses diesel, but the thrust increase is not significant. Thus, diesel’s use as a fuel for the microturbo engine is justified due to its lower consumption at both 0 °C and 20 °C.

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“…Most of these studies also evaluated the influence of gaseous pollutants on human and environmental health. The impact of commercial aviation emissions on air quality has been estimated to be responsible for approximately 16,000 premature deaths each year around the world [11]. In [12], important research questions on aviation-attributable air pollution were highlighted, such as global vs. local impacts, aviation impact in a changing atmosphere, and emission reduction strategies focused on technological changes such as alternative jet fuels [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

“…The impact of commercial aviation emissions on air quality has been estimated to be responsible for approximately 16,000 premature deaths each year around the world [11]. In [12], important research questions on aviation-attributable air pollution were highlighted, such as global vs. local impacts, aviation impact in a changing atmosphere, and emission reduction strategies focused on technological changes such as alternative jet fuels [13][14][15][16]. In [17], the sources and contributions of submicron particles (PM) were identified at the UK's second-largest airport to provide information on whether and under what circumstances ultrafine particles (UFP) might be correlated with noise exposure and, therefore, might need to be taken into consideration in studies investigating associations between aircraft noise and health outcomes.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Aircraft Emissions at Bucharest Henri Coanda Airport

Mirea,

Cican,

Cretu

2023

Eng. Technol. Appl. Sci. Res.

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This study presents the influence of aircraft movements on air quality by highlighting the contribution of landings and/or takeoffs at Henri Coanda Airport, Bucharest. An experimental campaign was carried out using a mobile laboratory equipped with reference instruments for the main air pollutants (NO-, NO2, NOx, SO2, CO, and O3) and a meteorological station to measure wind speed and direction, air temperature, pressure, and relative humidity at a height of 10 m above the ground. The mobile testing laboratory was located inside the airport near the passenger embarking area, and measurements were carried out for 7 days. Air sampling was carried out at a height of 3.5 m above the ground. Pollutant levels were continuously measured throughout the measurement period, with high-precision equipment and a 10-second interval. The results obtained showed an increase in pollutant concentrations during takeoffs and/or landings, providing an initial assessment of gaseous pollutant levels and hourly distribution. Airport authorities can use this assessment to balance aircraft and passenger movements to minimize human exposure to gaseous pollutants. Furthermore, this study used the Pearson correlation between each pollutant and meteorological parameters to establish the best conditions for passengers to be present on the airport premises. The results showed that wind speed and direction directly influence the distribution of gaseous pollutants, especially during landings and takeoffs.

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Jet CAT P80 Thermal Analyses and Performance Assessment Using Different Fuels Types

Cited by 13 publications

References 2 publications

Experimental Investigation of a Micro Turbojet Engine Chevrons Nozzle by Means of the Schlieren Technique

Experimental Investigation of a Micro Turbojet Engine Chevrons Nozzle by Means of the Schlieren Technique

Experimental Transient Process Analysis of Micro-Turbojet Aviation Engines: Comparing the Effects of Diesel and Kerosene Fuels at Different Ambient Temperatures

Evaluation of Aircraft Emissions at Bucharest Henri Coanda Airport

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