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Pathways to Net Zero: Evaluating Saf, Hydrogen and Dual-Fuel Propulsion for Next-Generation Derivative Regional Aircraft

ネットゼロへの道筋：次世代派生型リージョナル航空機のためのSAF、水素、デュアルフューエル推進の評価 (AI 翻訳)

Frühbeis AFM, Shamiyeh M, Hoffmann FK, Oliver W

Research Squareプレプリント2026-06-22#エネルギー転換対象セクター: transport
DOI: 10.21203/rs.3.rs-9823955/v1
原典: https://doi.org/10.21203/rs.3.rs-9823955/v1

🤖 gxceed AI 要約

日本語

本論文は、リージョナル航空の脱炭素化に向けて、SAF、水素燃焼、水素燃料電池、デュアルフューエル、バッテリー電気の各コンセプトを評価。SAFが短期的に唯一の解決策であり、水素航空機導入後も必要とされることを示す。デュアルフューエル方式は高い積載率と水素インフラの有無にかかわらず運用可能で有望。燃料電池方式は技術進歩が必要で、バッテリー電気は近い将来実現不可能。

English

This paper evaluates SAF, hydrogen combustion, hydrogen fuel cell, dual-fuel, and battery-electric concepts for decarbonizing regional aviation. SAF is the only near-term solution and will still be needed after hydrogen aircraft introduction. Dual-fuel shows promise with high load factor and flexibility regarding hydrogen infrastructure. Fuel cell requires significant technology improvements, and battery-electric is not feasible in the foreseeable future.

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

📝 gxceed 編集解説 — Why this matters

日本のGX文脈において

日本の航空業界（ANA、JALなど）は2050年ネットゼロ目標を掲げており、本論文の技術評価は国内の次世代航空機開発や水素インフラ整備の優先順位付けに示唆を与える。特にデュアルフューエル方式は、水素供給が限られる日本国内の空港でも運用可能な点が注目される。

In the global GX context

This paper provides engineering-level comparison of decarbonization pathways for regional aviation, relevant to global efforts under ICAO and the 2050 net-zero target. The dual-fuel concept's flexibility is particularly valuable for regions with uneven hydrogen infrastructure.

👥 読者別の含意

🔬研究者:Provides comparative performance data for alternative propulsion concepts in regional aviation, useful for choosing R&D priorities.

🏢実務担当者:Helps airlines and aircraft manufacturers understand the trade-offs between SAF, hydrogen, and battery options for fleet planning.

🏛政策担当者:Informs investment decisions in hydrogen infrastructure and SAF mandates by showing which technologies are viable in the near and long term.

📄 Abstract（原文）

<title>Abstract</title> <p> While passenger numbers in air travel are projected to continue increasing, the aviation industry has set the goal to reach net zero CO <sub>2</sub> emissions by 2050. In this paper, alternative energy carriers such as SAF, hydrogen and batteries are analysed in regard to their suitability to decarbonize regional aviation. The analysis is conducted based on the D328eco and potential derivatives: a hydrogen-burn concept, a hydrogen-fuel cell concept, a dual-fuel concept able to burn kerosene as well as hydrogen, and a battery-electric concept. The derivatives are designed for a range of 600 NM, covering a sufficient share of the regional route network. It is shown that SAF is the only near-term solution and that it will still be required after the introduction of hydrogen aircraft for airport pairs beyond the assumed design mission. The second promising concept to enable the usage of low-carbon hydrogen in aviation is the dual-fuel, exhibiting a high load-factor while enabling operations from and to airports with and without hydrogen infrastructure. Although being penalized in payload capability, the hydrogen-burn and fuel-cell concepts still have the potential to decarbonize regional aviation. It is demonstrated that the fuel-cell concept is contingent upon significant improvements in fuel cell technology and the electric powertrain. The battery-electric concept is not feasible in the foreseeable future. </p>

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