lec17 - Lecture 17 Apollo 11 Handout Apollo software...

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Lecture 17 Apollo 11 Handout: - Apollo software timeline - Lunar landing timeline/checklist Videos of test flights of LLRV - Thrusters/servos are H2O2; generates a lot of steam when fired (reacts with air) - computer sits on the opposite end of the craft; its weight balances the pilot’s (this is delightfully metaphorical) - flies pretty much like a helicopter (one main engine is centered underneath the craft; the rest of the flight is directional, and balancing (controlling attitude, etc)) - unlocking the gimble allows the computer to simulate the lunar environment; the craft pitches forward much more than a helicopter would because it’s simulating 1/6 of the Earth’s gravity Armstrong didn’t trust the velocity meter because in helicopters, when close the ground, you end up with a big bias because you’re picking up the reflection of the motor blades. He realized that the LM didn’t have blades, but still didn’t trust the velocity meter.
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