Dacian Herbei’s Post

This is a nice read, diving into the future of aircraft propulsion. This is my take on the subject, with all current ideas discussed. So do you think it would involve electric planes or hydrogen? Let's find out!

Astron Aerospace has introduced the H2 Starfire engine, a groundbreaking hydrogen-powered engine promising three times the efficiency of current market engines. This innovative technology marks a significant leap in hydrogen fuel technology, addressing efficiency, cost, and infrastructure challenges that have previously hindered the widespread adoption of hydrogen-powered vehicles. Unlike battery electric vehicles, the Starfire engine enhances traditional internal combustion engines, making them run on hydrogen without requiring entirely new infrastructure. Weighing 120 pounds and producing 400 horsepower with 500 pound-feet of torque, the compact engine can be fitted across multiple vehicle models. With a high operating RPM range and a unique combustion process that minimizes waste and reduces CO2 emissions, the Starfire engine offers a green fuel alternative for the future. As automakers strive to meet the growing demand for eco-friendly transportation, the Starfire engine could catalyze a shift toward hydrogen-powered vehicles, accelerating the transition to a sustainable automotive ecosystem. #H2Starfire #AstronAerospace #HydrogenEngine #GreenEnergy #SustainableFuture #CleanTechnology #HydrogenFuel #EcoFriendly #Innovation

www.Verdegoaero.com is developing Hybrid Generator Why Use a Hybrid Powerplant? When most people think about electric aircraft, they think about batteries. Batteries are great at delivering power in short bursts, but they are not good at storing energy. Batteries simply can’t carry enough energy to give electric aircraft the range and endurance they need to meet FAA and EASA reserve requirements. Hybrid powerplants enable aircraft designers to design new aircraft that are electric-powered while using liquid fuel as the primary energy source to provide the range and endurance needed to meet the energy reserve regulations. Pound-for-pound, liquid fuel carries roughly 26 times the energy of the best battery packs available.

Development of Advanced Propulsion Systems

https://lnkd.in/eZgKD9Ff Edmonton, AB, Canada-- Verne and its industry partners announced the completion of the first heavy-duty Class 8 truck powered by cryo-compressed hydrogen (CcH2). Verne’s CcH2 fuel storage system maximizes hydrogen storage density, increasing vehicle range while decreasing vehicle weight and storage system cost. Verne showcased the truck at the Alberta Motor Transport Association Innovation Expo in Edmonton, where fleets had the chance to inspect the completed truck. Verne will soon begin drive testing of the truck in advance of multiple commercial pilots.Verne’s cryo-compressed hydrogen technology involves cooling and compressing hydrogen to achieve the maximum hydrogen density of 73 g/L, a 33% improvement over liquid hydrogen and an 87% improvement over traditional 700 bar compressed gas hydrogen. Heavy-duty transportation is responsible for 12% of global CO2 emissions, and current zero emission options fail to meet the range and payload requirements of heavy-duty truck fleets. Increasing hydrogen density allows heavy-duty vehicles to store more energy onboard while using fewer heavy, expensive storage tanks. The first-of-kind cryo-compressed hydrogen truck uses Diesel Tech Industries’ Guardian Hydrogen Diesel System, which is a retrofit of a traditional diesel engine to enable the vehicle to run on a blend of diesel and hydrogen. DTI’s Guardian Hydrogen Diesel System can serve as an important bridge technology for the trucking industry, as it allows fleets to trial hydrogen fueling and driving without requiring investment in a new fleet of trucks.

If you missed Metstrade, or even if you attended, it’s hard to see everything. Aqua Lectric's overview is a great way to catch up on the latest in #marine electric propulsion. #metstrade #exhibition #electricpropulsion #aqualectric #maritime

Although wave devouring propulsion is not a new technology, researchers at Cranfield University are working on a new form of WDP that power larger ships and help reduce the use of fossil fuels in the maritime industry. Combined with wind power, this is an exciting development in the quest to make the industry more sustainable. How do you see the evolution of propulsion technologies impacting the maritime industry's sustainability goals? https://lnkd.in/dQ8RqEeu Via Ship Technology #ShipTechnology #WindPower #WavePower

A bit dated article, but too important to pass up. Battery technology is critical to a significant portion of the AAM market and will be the primary non-fossil fuel power until hydrogen cell technology and supply issues are matured. This article highlights key issues of safety concern, power reserve monitoring/simulation issues and lack of significant improvements in energy density over the decade long research. One item missing : no mention really of solid state battery research. #aam #batterypower #singleseatconsulting

A Shift in Gear: Market Forces vs. Political Will in the Automotive Industry 🚗💡 The recent statement by the German Finance Minister is igniting an interesting debate on the future of combustion engine cars. “We should go further and generally focus on technological openness,” Lindner said. #Automotive #CarNews #AutoIndustry #CarLovers #VehicleTechnology #FutureOfMobility #CarEnthusiast #DrivingExperience #AutomotiveInnovation #ElectricVehicles #AutoTech #CarReviews #AutomotiveDesign #MotorTrends #RoadSafety #SustainableTransportation #AutonomousVehicles #CarCulture #ClassicCars #MotorSports #automotivehiring #automotiveopportunity #automotivejob #garrettmotion #jobopportunity

China creates new Ram-Rotor Detonation Engine to boost hypersonic flight Researchers in China have introduced a new hypersonic engine concept by integrating a ramjet with a rotary detonation engine. A team at Tsinghua University in Beijing created a new design known as the Ram-Rotor Detonation Engine (RRDE) by combining a detonation engine and a rotor compressor based on ramjets, drawing inspiration from rotary engines. The design aims to provide continuous thrust, operate at lower start-up speeds, and enhance overall performance. According to researchers, the approach could improve efficiency in hypersonic flight, potentially making high-speed travel more feasible. Versatile engine design The new study examines the new RRDE, which is intended to improve propulsion through effective detonation cycles. Rapid combustion, or detonation, increases pressure by compressing fuel and air with a shock wave and then releasing a lot of heat. Despite the pressure advantages promised by detonation engines like the Pulsed Detonation Engine (PDE) and Rotating Detonation Engine (RDE), steady thrust and pressure are difficult to achieve under practical circumstances. Building on prior research, scientists propose the RRDE, which uses rotating blades to compress, ignite, and expand gases in a single sequence. Inspired by the ram-rotor compressor concept, the RRDE is designed to manage shock waves and improve thrust by sustaining ideal pressure cycles. The new research introduces RRDE's structure, analyzes its performance, and demonstrates its potential through simulations, paving the way for advances in hypersonic and aerospace propulsion. The RRDE is designed to enable continuous detonation waves and steady engine operation, aiming for high pressure and efficiency. Its core structure consists of a rotor with blades in a helical pattern within a stationary casing. As fuel and airflow through the channels between these blades, they are compressed, ignited, and expanded, all in one compact unit. According to the team, the design minimizes disruptive shock waves, improving performance. The RRDE is adaptable since it can function at a variety of speeds by varying the rotor speed. In contrast to existing detonation engines, the RRDE offers a more reliable and effective propulsion choice by addressing problems such as low start-up speeds in oblique detonation engines and discontinuous thrust in pulse detonation engines. Advanced engine efficiency Test results showed that RRDE combines compression, combustion, and expansion in one rotor, using a detonation wave fixed relative to the rotor to improve pressure and efficiency. The RRDE operates at various speeds by shortening the combustion path. The relative inlet velocity (V0), the absolute inlet velocity, and the fuel-to-air ratio are the three main determinants of its performance.