航空エンジン燃焼器の技術動向と展望

抄録

Trend of the recent combustor technology for civil aircraft engines are reviewed. NOx reduction is extremely difficult for aircraft engines, which have many strict requirements including light weight and compactness. However, the tightening of NOx regulations over the last 20 years has greatly advanced the technologies of aircraft engine combustors. In addition to NOx, in the near future PM and CO₂ emission regulations will become even stricter, but the required technologies are common to each other in that those are technologies that uniformly mix and react fuel and air in the smallest possible volume. Therefore, further development of RQL, Lean Burn, Spinning, etc. are expected. As computational resources expand, LES is becoming a standard tool which takes important role in the combustor development process. In order to precisely predict emissions such as NOx and PM, even more accurate atomization models and turbulent combustion models are considered necessary.