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Gyroscope.com - gyroscopes, educational toys and gadgets http://gyroscope.com/#


"vernier engine throttle settings were controlled using a proportional-plus-derivative
feedback loop closed around the measured vs. desired velocity magnitude as
a function of altitude, represented by the [~parabolic] descent contour"
Surveyor Spacecraft Automatic Landing System
Sam W. Thurman
AAS 04-062
http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.504.9417&rep=rep1&type=pdf

Bradwii tutorial introduction - https://www.youtube.com/watch?v=cPupiO5l_Jw

https://github.com/goebish/bradwii-X4

"Hubsan X4 H107 serie uses Invensense MPU-3050 gyro, mCube MC3210 accelerometer and A7105 RF."

Online Apollo Guidance Computer Simulator http://svtsim.com/moonjs/agc.html
My very 1st G+ search for deep passionate geek stuff. @mikeelgan @twit suggestion. Too cool.

"The roll rockets were designed for a maximum thrust of 40 pounds and the pitch and yaw rockets for a maximum thrust of 113 lbs, at an altitude of 200,000 feet."

Jarvis, Calvin R.; Lock, Wilton P. (1965). Operational Experience With the X-15 Reaction Control and Reaction Augmentation Systems. NASA. OCLC 703664750. TN D-2864.
http://www.nasa.gov/centers/dryden/pdf/87709main_H-364.pdf
http:// bobholland.com/me/xlr99_files/x15-2.pdf
http://books.google.com/books/about/Operational_Experience_with_the_X_15_Rea.html?id=FgDsX6fnSV0C

http://en.wikipedia.org/wiki/Lockheed_NF-104A#Reaction_Control_System_2
"The pitch/yaw thrusters were rated at 113 lbf (500 N) thrust each and the roll thrusters were rated at 43 lbf (190 N) thrust."

Simulated Spaceflight with the Iron Cross - YouTube https://www.youtube.com/watch?v=oX2klnOeHjg
This would make a great carnival ride. At least if you can't have this:
https://www.youtube.com/watch?v=pAzFSr52f68