reaction engines

A BBC Four documentary following Alan Bond and Reaction Engines as they pursue the Skylon spaceplane and its SABRE engine. It covers the history from HOTOL and the heat-exchanger breakthrough.

Scott Manley explains rotating detonation engines, how they differ from pulsed detonation engines, and why thermodynamics predicts they beat traditional jet and rocket engines.

Engineering Explained argues that internal combustion engines are far from dead, and discusses the continued development of ICEs and the problems facing electric vehicles.

Veritasium explains how jet engines run hotter than their components' melting points, using cooling air and single-crystal superalloy turbine blades. It covers how the blades are grown as aligned crystals.

A Channel 4 Equinox documentary on the NK-33 engines built for the Soviet N1 moon rocket and how they ended up in the USA. It includes rare footage and interviews with veterans of the early Soviet space program.

Everyday Astronaut explains the basic physics of rocket engines, the main engine cycles and fuel types, then compares SpaceX's methane-fueled full-flow staged combustion Raptor to other engines. It runs nearly 50 minutes with chapter markers.

Kurzgesagt explains stellar engines such as the Shkadov thruster and Caplan thruster, which could move the Sun and solar system across the galaxy over millions of years to avoid hazards and reach new regions.

A 10-minute clip from a Jonathan Blow Twitch stream in which he argues that game engines do not really need separate scripting languages. He questions the value of embedded interpreters when the main language can do the job.

Brian Bucklew of Freehold Games discusses design decisions behind Caves of Qud and Sproggiwood at IRDC 2015. The talk centers on data-driven, event-driven engine design.

A demo of the Cubli, a 15 cm cube that uses reaction wheels to jump up onto a corner, balance there and fall in a controlled way to move. The video shows these three abilities chained into locomotion.

Nathan Kutz presents the spatio-temporal dynamics of rotating detonation rocket engines, including combustion fronts that behave like solitons. He shows a bifurcation analysis of a multiscale model that captures the main features.

A hobbyist build-and-experiment video on rotating detonation engines (RDEs), where a continuous detonation wave spins around an annular chamber. The creator 3D prints parts and tests a small engine, while being candid about uncertainty over whether a true rotating wave was achieved.

A short clip of the audience at Valve's 2017 announcement of Artifact, a Dota 2 card game, reacting with visible disappointment. The footage captures the awkward silence and the logo reveal.

A short claymation music video by animator savannahXYZ satirizing how bad web search has become, with SEO spam and ads crowding out real answers. It is comedic rather than analytical.

Miguel de Icaza's GodotCon 2023 talk on Swift bindings for Godot. He argues that garbage-collector pauses in C# are a persistent problem and that Swift's reference counting avoids them.

minimme traces the timeline of 3D graphics engines on the Game Boy Advance, from early experiments to commercial 3D games, covering techniques such as voxel rendering. It is a history and showcase of what developers coaxed out of the limited hardware.

In this 2019 GDC session, Petri Purho of Nolla Games explains the technical side of Noita's physics engine, including scaling a falling-sand simulation to large continuous worlds and adding destructible rigid bodies. It also shows how the emergent physics drives the gameplay.

Tom Scott-style absurdist tour by Tom7 of SIGBOVIK chess projects: a tournament of 30 weird chess algorithms used to rate a color- and piece-blind chess program. Topics include mirrors, arithmetic encoding, perverted game tree search and a diluted Stockfish.

Engineering Explained examines Toyota's hydrogen-burning V8 engine built with Yamaha and explains the practical problems of hydrogen combustion vehicles. It covers efficiency, storage and distribution issues.

Scott Manley explains the plumbing of rocket engines, including pressure-fed, gas generator, expander and staged combustion cycles. He shows why more complex designs exist and what they gain.

Video of the March 2014 Senate Defense Subcommittee hearing on National Security Space Launch programs. Elon Musk of SpaceX testifies alongside ULA's CEO, a GAO official and a policy expert, on launch contracts and Russian engines.

Tim Dodd's hour-long deep dive on how rocket engines start, from solid motors to liquid engines. It covers thermal conditioning, spin-up, ignition methods, starting in space, and a step-by-step RS-25 startup.

John Lin reveals a rewritten voxel engine demonstrated in a Crystal Islands scene, with much finer voxel detail, fast collision, fracture and path-traced global illumination.

Everyday Astronaut takes a tour of SpaceX's Starbase with Elon Musk as guide. Topics include the Raptor engines, launch escape systems, the heat shield and the first orbital test.

A Linear engineer talks about scaling the company's sync engine, which keeps client data local and synchronized. It follows an earlier talk on the same system.

Tim Dodd of Everyday Astronaut talks with Elon Musk right after Musk's 2019 Starship presentation. Musk discusses Starship's design, why SpaceX favors conventional engines over aerospikes, and how deleting parts and processes speeds up development.

Aaron Boodman of Replicache asks why sync engines have not yet fixed web app complexity and what is missing for them to go mainstream. The talk lays out the ideas that led to the Zero sync engine.

GothamChess walks through AlphaZero's famous games against Stockfish, highlighting its unusual pawn sacrifices and positional style. It is aimed at chess fans rather than ML specialists.

Engineering Explained examines BMW's Hydrogen 7, a V12 that burns liquid hydrogen or gasoline. He covers cryogenic storage at -253C and why the approach is impractical.

Episode 7 of the Inside Koenigsegg series, where Christian von Koenigsegg demonstrates the camless Free Valve engine technology. It discusses how such innovation could affect the wider auto industry.

Casey Muratori's remastered BICFest 2018 talk on how the collision system of The Witness was engineered to prevent whole classes of bugs found in game engines. It covers character movement and collision handling.

Mike Acton, in a HandmadeCon 2015 interview with Casey Muratori, discusses game engine development, hiring and learning on your own.

A University of Tokyo demo of a rock-paper-scissors robot that always wins, using high-speed vision to read the human hand and respond faster than people can perceive.

A short Tim and Eric Awesome Show sketch, The Universe I, II & III, in which the cosmos is shown in a deliberately absurd way. It is an Adult Swim surreal comedy bit.

A one-minute Steve Summers clip of Willy Wonka saying no, don't, stop. It is a reaction meme.

ACS Reactions investigates why Mexican Coke, supposedly cane sugar sweetened, tested as having glucose and fructose, explaining that sucrose breaks down in acidic soda.

Mike Acton of Insomniac Games argues that a program's purpose is transforming data, and shows how common C++ approaches work against that in performance-critical game development. He covers cache behavior, data layout and the limits of compilers.

Part 4 of John Carmack's QuakeCon 2013 keynote, covering OpenGL, functional programming, Haskell, Lisp and Scheme, typing, multithreading, events and garbage collection.

A 2018 GDC talk by NetherRealm's Michael Stallone on the engine changes, optimizations and tooling needed to roll back and re-simulate up to 8 frames in 16 ms in Mortal Kombat and Injustice 2. It is a deep dive into deterministic rollback netcode.

PS5 lead system architect Mark Cerny gives a deep dive into the PS5's architecture, covering its SSD, I/O, audio and design goals. He explains how removing bottlenecks shapes future games.