LiquidPiston’s Post

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The difference between two raptor engines; sea level raptor engine performance at the top and the vacuum optimized raptor engine at the bottom. The thrust produces at sea level is 230 tf (2.26 MN; 507,000 lbf) and 258 tf (2.53 MN; 569,000 lbf) vacuum optimized.

𝑹𝒐𝒕𝒂𝒓𝒚 𝑬𝒏𝒈𝒊𝒏𝒆 The rotary engine, also known as a Wankel engine, is a type of internal combustion engine invented by German engineer Felix Wankel in the 1950s. Unlike traditional piston engines, which use reciprocating motion, rotary engines operate on a different principle. Working principle: 1. Rotor: Instead of pistons moving up and down, a rotor in the shape of a triangle or epitrochoid (a geometric shape similar to a circle) rotates within an oval-like chamber. 2. Combustion: The rotor seals against the chamber walls, creating three separate volumes within the chamber. As the rotor turns, these volumes expand and contract, compressing and expanding the air-fuel mixture. 3. Intake, Compression, Power, Exhaust: Like in conventional engines, the four-stroke cycle of intake, compression, power, and exhaust still occurs, but it all happens simultaneously in different parts of the chamber as the rotor rotates. 4. Output: The rotational motion of the rotor is transferred directly to the output shaft, providing power to the vehicle or machinery. Rotary engines have several advantages, including their compact size, high power-to-weight ratio, and smooth operation. #rotaryengine #snsinstitutions #snsdesignthinkers #designthinking

Stirling engine with propeller

Let's assume that I am a ramjet engine. I am designed to operate efficiently at supersonic speeds. Unlike traditional jet engines, I have no moving parts such as compressors or turbines. Instead, I rely on my shape and speed to function effectively. As I hurtle through the air at high speeds, the air enters my intake and is compressed solely by my forward motion. This is the first crucial phase of my operation, known as ram compression. The faster I move, the more the air compresses, raising its pressure and temperature. Once the air is sufficiently compressed, it enters my combustion chamber. Here, fuel is injected and ignited. The combustion process generates high-pressure and high-temperature gases, which expand rapidly. This expansion creates a powerful thrust, propelling me forward. Unlike other engines, I rely on my high-speed flight to maintain the necessary compression, so I am most efficient at speeds above Mach 2. The hot gases then exit through my nozzle, converting thermal energy into kinetic energy, and accelerating me even further. This process is continuous as long as I maintain high speed and adequate fuel supply. I am simple in construction compared to other engines, with fewer moving parts, making me reliable and efficient for high-speed travel. However, my simplicity comes with limitations. I cannot start from a standstill and require an initial speed, often provided by another engine or booster, to begin my operation. My efficiency also drops at lower speeds, making me less versatile than other propulsion systems. https://lnkd.in/g_mnygxm

Voith Water Tractor (VWT) - Model test in Voith's own test tank Continuous improvement through R&D Model tests are a very effective tool for hydrodynamic product optimization. We are glad to have our own test tank.   The short time-lapse video below shows how a model test is set up to optimize a Voith Water Tractor.   This Voith Water Tractor is propelled by two Voith Schneider Propellers (VSP) 32X6/265, with 3000 kW input power. In the model, our propellers usually have a diameter of 200 mm. This gives us a model scale of 16.   In addition to the input power, we also measure the forces in the longitudinal and transverse directions on one of the two model propeller. This gives us precise information about the interaction of the VSP with the ship's hull: suction and wake are determined in this way.   Such propulsion tests, as we present to you in this video, are carried out very frequently in our tank. #Voith #VoithSchneiderPropeller #VSP

Operating principle of rotor engine

Another great article about Aerzen’s Turbo technology and offerings. Check out the video to learn more. #expectperformance #turboblowers #InnovativeTechnology  #CostSavings #AerzenExpertise  #EnergyEfficiency

Fuel Agnostic Engines: The Death of Diesel Fuel? Cummins has a new engine architecture that may be designed to survive the end of diesel fuel. https://hubs.li/Q02wNLXS0

Curious on what type of turbo you have? Garrett Motion offers you the perfect guide to understand Wastegate Turbos, Variable Geometry Turbine Turbos, VNT and Two Stage Turbos. Learn more!