Terminal area operations for hybrid electric distributed propulsion

Abstract

Purpose

This paper aims to create a terminal area operations (TAO) analysis software that can accurately appreciate the nuances of hybrid electric distributed propulsion (HEDP), including unique failure modes and powered-lift effects.

Design/methodology/approach

The program was written in Visual Basic with a user interface in Microsoft Excel. It integrates newly defined force components over time using a fourth order Runge-Kutta scheme.

Findings

Powered-lift, HEDP failure modes and electrical component thermal limitations play significant roles on the performance of aircraft during TAO. Thoughtful design may yield better efficiency; however, care must be given to address negative implications. Reliability and performance can be improved during component failure scenarios.

Research limitations/implications

This program has and will support the investigation of novel propulsion system architectures and aero-propulsive relationships through accurate TAO performance prediction.

Practical implications

Powered-lift and HEDP architectures can be employed to improve takeoff and climb performance, both during nominal and component failure scenarios, however, reliance on powered-lift may result in faster approach speeds. High-lift and system failure behavior may also allow new approaches to design and sizing requirements.

Originality/value

This program is unique in both the public and private sectors in its broad capabilities for TAO analysis of aircraft with HEDP systems and powered-lift.

Citation

Schiltgen, B., Green, M., Freeman, J. and Gibson, A. (2014), "Terminal area operations for hybrid electric distributed propulsion", Aircraft Engineering and Aerospace Technology, Vol. 86 No. 6, pp. 584-590. https://doi.org/10.1108/AEAT-04-2014-0047