The startup develops electric propulsion systems and battery management technologies to enable clean and quiet air transportation. Their solutions focus on optimizing the propulsion chain, from energy source management to pilot interface, addressing the environmental impact of traditional aviation.
Funding
$94.7M raised to dateRaised to date based on public sources. This may differ from the amount the company actually raised and is based only on what is publicly available on the internet.
Founders
Product
Problem
The aviation industry faces increasing pressure to reduce its environmental impact through quieter and cleaner aircraft designs. Traditional propulsion systems contribute significantly to noise pollution and greenhouse gas emissions.
Solution
H55 develops and certifies electric propulsion systems (EPS) for the aviation industry, enabling aircraft manufacturers to create clean, quiet, safe, and affordable electric aircraft. Their EPS solutions include an Energy Storage System (ESS) comprised of battery packs, battery management systems, and interfaces, as well as an Electric Power Unit (EPU) with a motor and motor controller. H55's modular and customizable technology supports the transformation of existing airplanes via STC programs and the development of new aircraft designs for commuters, STOL, and eVTOL applications. The company also provides aircraft integration support and certification assistance to its customers.
Target Audience
H55's primary customers include OEMs, component manufacturers, and operators in the general aviation and regional transport categories.
Features
- Certified Electric Propulsion System (EPS) suitable for CS-23 Level 1 aircraft
- Modular Energy Storage System (ESS) with battery packs, battery management systems, and interfaces
- Electric Power Unit (EPU) including electric motor and motor controller
- Battery modules with energy density of 200 Wh/kg
- Modular architecture supporting up to 1250V
- Battery Management Unit (BMU) providing data from individual battery modules to pilot control systems
- Energy Flow Counter (EFC) indicating consumed energy
- Patented thermal management packaging and protection
- Fully redundant analog and digital monitoring systems
- Certifiable Redundant Motor Controller up to 200 kW, 800 V
- Direct procurement from part manufacturers for quality and traceability
- Automated battery pack assembly line
- Compliance with aviation standards such as DO-178C, DO-254, ARP4754, RTCA DO-311, and DO-160