A Bréguet Range Equation for Hybrid-Electric Jet Aircraft Sizing and Analysis

Gabrielle E. Wroblewski, Phillip J. Ansell

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A Bréguet Range Equation for a hybrid-electric (thrust-rated) jet aircraft was formulated by modifying the conventional Bréguet Range Equation derivation to incorporate a power-rated electric motor and battery energy source. The resulting ranges for conceptual hybrid-electric aircraft were compared to a hybrid-electric flight performance simulation using publicly available aircraft data for the Embraer ERJ-175 regional jet aircraft. Various degrees of hybridization were simulated with the time-stepping flight performance model and compared to the Hybrid-Electric Bréguet Range Equation (HEBRE) results. It is shown that the HEBRE and the time stepping model produce highly consistent maximum ranges across various levels of hybridization and battery specific energy values. Additionally, range values obtained by the HEBRE across a span of flight Mach numbers were consistent with those produced by conventional and fully-electric variants of the Bréguet Range Equation, when simulations were conducted at the limits of zero and 100% hybridization factor. Results obtained from the time-stepping model and the HEBRE also indicated similar cruise Mach numbers for maximum range across a series of hybridization factors. These results demonstrated that, as the degree of hybridization in the power system increases, the cruise Mach number for maximum achievable range decreases.

Original languageEnglish (US)
Title of host publication2020 AIAA/IEEE Electric Aircraft Technologies Symposium, EATS 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781624106057
DOIs
StatePublished - Aug 26 2020
Event2020 AIAA/IEEE Electric Aircraft Technologies Symposium, EATS 2020 - New Orleans, United States
Duration: Aug 26 2020Aug 28 2020

Publication series

Name2020 AIAA/IEEE Electric Aircraft Technologies Symposium, EATS 2020

Conference

Conference2020 AIAA/IEEE Electric Aircraft Technologies Symposium, EATS 2020
CountryUnited States
CityNew Orleans
Period8/26/208/28/20

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Safety, Risk, Reliability and Quality

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