Liquid Piston ━ Introducing the X mini engine
LiquidPiston develops compact, powerful, quiet, efficient, low-vibration, multi-fuel capable combustion engines that are scalable from 1HP to over 1000HP. Based in Bloomfield, CT, the company has patented a new rotary engine delivering up to 10x more power and 30% greater efficiency than traditional piston engines, making it ideal for hybrid-electric, drone, and military applications. LiquidPiston maintains state-of-the-art laboratory facilities with dynamometer test cells and CNC machining capabilities, and has received multiple SBIR/STTR contracts from the U.S. Army and Air Force.
Tech & App Stack is available on paid plans
Upgrade to Silver or higher to reveal the full technology and app stack for any company.
View pricingCreate a free account to see funding visualizations and detailed round data.
Create Free AccountMar 2026
Dec 2025
Oct 2023
Dec 2017
Create a free account to see which investors have funded this company.
Create Free AccountWe’re on a mission, and it starts with 100% reusable rockets.

Building humanity’s multiplanetary future.
Aerospace company developing hypersonic aircraft for defense and commercial transportation
Saronic provides naval and maritime forces with intelligent Autonomous Surface Vessels at scale, ...
Shield AI's mission is to protect service members and innocent civilians with artificially intell...
R&D company with 8 SBIR/STTR awards from National Aeronautics and Space Administration, Departmen...