Measuring the Efficiency of Turbojet and Turbofan Engines Used in Fighter Aircraft Produced During the Cold War Years Using Data Envelope Analysis (DEA)

Abstract

This study examines the efficiency of 19 fighter jet engines developed during the Cold War era and still in active use today, using the Data Envelopment Analysis (DEA) method. According to the analysis results, which incorporate four input and four output variables, only one of the 11 U.S.-made engine types, the F110-GE-100, had an efficiency score below 1 (0.986). Among the eight Soviet-made engines, the R-27F2-300, R-27F2M-300, and R-29-300 models had efficiency scores of 0.999, 0.999, and 0.983, respectively, all below 1. The study concluded that increasing the airflow data and total compression ratios could improve the efficiency of the F110-GE-100 and R-29-300 engines. It was highlighted that the analysis focuses on engine efficiency rather than overall performance, and no information about their operational superiority in various mission and operational environments was included. A separate analysis would be necessary to address these aspects. The general assessment shows that these engine types are efficient within the scope of this study.

Keywords

• Data Envelopment Analysis
• Aviation
• Turbojet

Measuring the Efficiency of Turbojet and Turbofan Engines Used in Fighter Aircraft Produced During the Cold War Years Using Data Envelope Analysis (DEA)

Abstract

Makale Soğuk Savaş döneminde geliştirilen ve günümüzde hala aktif olarak kullanılan 19 avcı uçağı motorunun etkinliğinin Veri Zarflama Analizi (VZA) yöntemiyle incelemektedir. Dört girdi ve dört çıktı değişkinin bulunduğu analiz sonuçlarına göre; ABD yapımı 11 motor tipinden sadece F110-GE-100'ün etkinlik ölçütü 1'in altında olduğu (0.986), Sovyetler Birliği yapımı sekiz motor tipinden ise R-27F2-300, R-27F2M-300 ve R-29-300 motorlarının etkinlik değerlerinin sırasıyla 0.999, 0.999 ve 0.983 olduğu ve etkinlik değeri “1”’in altında kaldığı tespit edilmiştir. Etkinliği artırmak için F110-GE-100 ve R-29-300 motorlarının hava akış verilerinin ve toplam sıkıştırma oranlarının artırılması gerektiği sonucuna ulaşılmıştır. Analiz sonuçlarının motorların etkinliklerine yönelik yapıldığı ve verimlilikleri özelinde bir bilgi ihtiva etmediği, etkinlik değerlerinin motor tip ve versiyonları açısından değişen görev ve harekât ortamlarında birbirleri üzerinde bir üstünlüğünün olup olmadığı ayrı bir analizin konusu olduğu ve bu makalede yer verilmediği vurgulanmıştır. Yapılan genel değerlendirme kapsamında motor tiplerinin etkin olduğu görülmektedir.

Keywords

• Veri zarflama analizi
• Havacılık
• Turbojet

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