Five full courses (Aviation, Aerospace, Space Operations, Engineering and Technology) built from first principles: read the idea, manipulate a model of it, see where it shows up in the real world, then prove you actually got it. No account required to read any of it.
Each one asks for a different kind of attention, and the label on a lesson tells you which before you start it.
A clear explanation written for someone meeting the idea for the first time, not a textbook summary, and not a simplification that has to be unlearned later.
The same idea as something you can change. Move a variable, watch what happens, and build the intuition that text alone cannot give you.
Follow the concept outward into the vehicles that use it, the missions that depended on it, and the people whose job it is.
Use it on something real, check your reasoning, and find out whether the idea has actually become a skill.
Aviation, Aerospace, Space Operations, Engineering and Technology are written and can be read today. The rest are structure without prose, chapter and lesson names are real, the lessons behind them are not written yet.
Nine chapters from the four forces to the accident chain, what holds an aircraft up, what the rules are protecting, and why the decisions that matter most are made before anyone leaves the ground.
Chapter 1 is free. Chapters 2–9 are $24.99, one payment, lifetime access.
9 chapters7 interactive models~235 min readingStart the course
Nine chapters from what an aerospace engineer actually does to where the field is heading, vehicles, aerodynamics across every speed regime, structures, propulsion, stability and control, systems integration, the design and test process, and the careers built on all of it.
Chapter 1 is free. Chapters 2–9 are $24.99, one payment, lifetime access.
9 chapters7 interactive models~160 min readingStart the course
Nine chapters from what makes spaceflight fundamentally different from atmospheric flight to where the field is heading, orbital regimes, spacecraft systems, space law, orbital mechanics, mission planning, transportation, human spaceflight, and the future of operations.
Chapter 1 is free. Chapters 2–9 are $24.99, one payment, lifetime access.
9 chapters6 interactive models~204 min readingStart the course
Nine chapters from what engineering actually is to the ethical obligation every licensed engineer carries, the design process, statics and materials, thermodynamics and fluids, electrical fundamentals, feedback control, systems engineering, manufacturing quality, and the profession’s ethics and economics.
Chapter 1 is free. Chapters 2–9 are $24.99, one payment, lifetime access.
9 chapters6 interactive models~194 min readingStart the course
Nine chapters from what a computer actually does to the fairness tradeoffs baked into the algorithms shaping people’s lives, computing fundamentals, algorithms and data structures, software engineering, networks, databases, cybersecurity, embedded sensing, machine learning, and technology ethics.
Chapter 1 is free. Chapters 2–9 are $24.99, one payment, lifetime access.
9 chapters4 interactive models~187 min readingStart the course