800 — Hybrid-electric propulsion¶
Hybrid-electric aircraft are not defined by a single architecture. They are defined by power-sharing and energy management across a mission.
This chapter uses a computational test case (via PhlyGreen) to explore:
- hybridization level and power split choices,
- battery cell assumptions and sizing,
- drivetrain efficiencies,
- mission-dependent constraints (power peaks vs energy capacity),
- where hybrid-electric helps (and where it does not).
The goal is not to “optimize” a single design, but to learn how hybridization reshapes trade-offs and constraints.
Exercises in this chapter¶
800.1 — Hybrid-electric mission test case with PhlyGreen¶
A guided notebook using a Class II battery model and a prescribed hybridization strategy. You will explore:
- power split ratio along the mission,
- battery cell properties and pack sizing,
- component efficiencies,
- hybrid-electric aircraft performance along mission,
- sensitivity of results to assumptions.
Learning outcomes¶
After completing this chapter, you should be able to:
- Interpret how mission power profiles drive battery sizing and feasibility
- Identify which parameters dominate results and which are second-order
- Produce a defensible sensitivity study (rather than “turning knobs randomly”)
- Communicate hybrid-electric results with appropriate knowledge about assumptions