• Home
• Aircraft
  About aircraft   People   Case studies Common fallacies   Downwind turn   T-tails   Canards   Autogyro's   Airships   Biomimicry Aerodynamics   Wings   Cowlings   Cooling   Wind tunnels Nature   Flapping flight   Flying seeds
• Stability
  Trim Modes   Eigenvectors Aircraft modes   Short period   Phugoid   Dutch Roll   Spiral   Energy Mode Flight simulation   Motion cueing   Specific force   Hexapods   Artificial feel   Control linkages Etkin
• Propellers
  About propellers Textbook   Frontispiece   Contents   Preface
• Ships
  Ship propulsion   Propellers   Whale tail   Paddle boats   Sailing Hydrofoils
• Space
  Space projects   The ISO satellite   The SAX satellite Zero-G   Random Positioning Machine   Ballistocraft (UAV)   Free wing   Citation   Flight director Other   Laminar flow box   Thermal control   VLT optical delay Line
• Haptics
  Haptics at FCS   Haptic Master   Armbot Algorithms   Admittance   Master / slave API's and rendering   Web interface   Haptic API   Rendering 3D treadmill
• Mechanics
  Dynamics   Center of percussion   Pendulums   Anti-resonance   Rigid body dynamics Physics   Electrical   Acoustical   Perception Structures Linkages
• Kinematics
  Kinematics   Forward / inverse   DOF's   Skewed axes   Quaternions
• Math
  About math Linear algebra Quaternions Matlab scripts
• Control
  Minimizing uncertainty   Feedforward or feedback   Measurement or control Linear control   Simplified PD tuning   Kalman filters, LQR and LQE   Cascaded control Nonlinear control   The phase plane   The dual control law   Posicast
• Design
  Methods   Inventors   Corporate innovation   Skunk works   Toyota   TRIZ Documenting   Sketching   Prototyping   Config control   Memo's   Website Money
• CV
  Delft   Design exercise   Autopilot thesis Fokker   Aircraft   Space   Haptics Various   Model aircraft   Recumbents   Hydrofoil

about this site

no rhyme or reason

This site gives musings on things that have caught my attention over the years.

The intention is often to have "simple" basic principles clarify "difficult" subjects.

The selection tends to be purely personal, and largely a matter of taste.

Also, some autobiographical material plays a role in these selections.

contents and organization

This site is really a personal blog. For easier reference, it is organized by subject, instead of chronologically.

Some parts are mere sketches of ideas, others are more elaborate, but all of them are works in progress.

This site contains a serious text on propeller theory, and there will be a similar text on haptics as well.

disclaimer

Please feel free to use any of this material, but do so at your own risk  :

- some of it is tested in practice, but none of it is peer reviewed.

  --  Piet Lammertse  --