Swedish hybrid-electric airplane maker Heart Aerospace unveiled its first full-scale demonstrator airplane, marking a major milestone in the development of its regional hybrid-electric aircraft, the ES-30.

Built almost entirely in-house at Heart’s Gothenburg facilities, the demonstrator reflects the company’s strategy to develop the design and production processes simultaneously.

With a 32-meter wingspan, the demonstrator, named Heart Experimental 1 (Heart X1), will serve as a platform for testing and development of Heart’s ES-30 aircraft.

Heart X1

Initially, the HX-1 will be used for ground-based testing, focusing on charging operations, taxiing, and turnaround procedures. It is scheduled to undertake a fully electric first flight in the second quarter of 2025. In preparation for this flight, Heart will test critical systems by running hardware tests both on and off the airplane over the coming months.

Development of the Heart X1 has been funded in part by grants provided by the Swedish Innovation Agency, Vinnova, highlighting the essential collaboration between government and industry that is needed to bring new aviation technologies to market.

Developing innovative net zero aerospace technologies demands a revolution in product development and manufacturing, much like what we’ve witnessed in the automotive and space industries.

—Ben Stabler, Chief Technology Officer at Heart Aerospace

Building on the experience of developing the Heart X1, Heart is now focused on creating an aircraft manufacturing process that leans into the latest technologies in composite manufacturing and product lifecycle management, building a data-driven assembly line with high repeatability, automation and non-destructive inspection.

Heart’s next step in developing the ES-30 is the building of a pre-production prototype, the Heart X2, which will further mature the design and production methods based on lessons learned from the Heart X1.

The Heart X2 is scheduled for a hybrid-electric flight in 2026 and will demonstrate the company’s Independent Hybrid propulsion system. In August, Heart Aerospace was selected for a $4.1-million grant by the Federal Aviation Administration’s (FAA) Fuelling Aviation’s Sustainable Transition (FAST) program to develop the management system for the hybrid-electric propulsion.

This momentum will continue with the establishment of a pilot manufacturing plant to accelerate prototyping toward the manufacturing of a fully conforming aircraft, with Heart targeting type certification of the ES-30 by the end of the decade.

The ES-30 is a regional hybrid-electric airplane with a standard seating capacity of 30 passengers, which promises to deliver sustainability and efficiency on short-haul routes, with an electric zero-emission range of 200 kilometers and an extended hybrid range of 400 kilometers.