Author Topic: The Apollo Lunar Module Engineering  (Read 10164 times)

Offline catdlr

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The Apollo Lunar Module Engineering
« on: 10/29/2025 04:45 am »
The Lunar Module Engineering Saga (Compilation) — How Apollo’s Fragile Spacecraft Conquered the Moon

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Oct 27, 2025
Experience The Lunar Module Engineering Saga (Compilation) — a cinematic blend of three Apollo documentaries: Engineering the Lunar Module’s Landing Legs, The Hidden Systems That Kept the Crew Alive, and Descent to the Moon — The Hardware Behind the Landing.

This special edition brings these stories together in one film to reveal how engineers built, landed, and sustained the most remarkable spacecraft ever created.

(Note: As this is a compilation, some narration or footage may repeat from the original uploads.)

« Last Edit: 11/12/2025 03:17 am by catdlr »
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Offline catdlr

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Re: The Lunar Module Engineering Stories
« Reply #1 on: 10/30/2025 04:52 am »
Inside the Lunar Module’s Brain: How the Abort Guidance System Saved Apollo

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Oct 28, 2025
Discover the hidden brain of the Lunar Module — the Abort Guidance System (AGS). Built by TRW as a backup to the Apollo Guidance Computer, the AGS was the system NASA hoped would never be used — yet it saved lives on Apollo 13. Learn how this compact 33-pound computer guided astronauts through emergencies, survived power failures, and pioneered strapdown navigation that shaped modern spacecraft design.




« Last Edit: 10/30/2025 04:52 am by catdlr »
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Offline catdlr

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Re: The Lunar Module Engineering Stories
« Reply #2 on: 11/01/2025 01:13 pm »
Lunar Module Power: The Hidden Electrical Systems That Kept Apollo Alive

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Oct 31, 2025
Inside the Lunar Module’s electrical nerve system — the hidden network that powered Apollo on the Moon.

Discover how NASA abandoned fuel cells for silver-zinc batteries, why the LM used seven of them, and how the ECAs, buses, and “deadface” circuits kept astronauts alive. Learn how Apollo 13 turned the LM into a lifeboat that powered two spacecraft for 83 hours.

Watch the silent side of Apollo — the engineering that made electricity the difference between life and death.

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Offline catdlr

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Re: The Lunar Module Engineering Stories
« Reply #3 on: 11/02/2025 12:39 pm »
The Lunar Module’s Ascent Stage: Leaving the Moon on Explosive Precision

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Nov 1, 2025
The Lunar Module’s ascent engine was the most critical single-start system of Apollo. Built by Bell Aerosystems for Grumman, it produced 3,500 pounds of thrust using hypergolic propellants — Aerozine-50 and nitrogen tetroxide — and fired perfectly on all seven lunar missions (Apollo 11 – 17). Learn how this 181-pound, pressure-fed engine lifted astronauts off the Moon with flawless precision and no backup system — the quietest, most reliable engine in space history.

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Offline catdlr

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Re: The Lunar Module Engineering Stories
« Reply #4 on: 11/07/2025 05:54 am »
Inside the Lunar Module’s Cooling System: How Apollo Stayed Alive in Space’s Heat and Cold

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Nov 6, 2025
Discover how the Lunar Module kept its crew alive in the extremes of lunar heat and cold. Inside Apollo’s hidden thermal control system — twin glycol loops, sublimators, and accumulators that rejected heat into the vacuum of space.
Based on NASA’s Apollo Experience Report (1972), this episode reveals the quiet engineering masterpiece that made the Moon landings possible.

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Offline catdlr

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Re: The Lunar Module Engineering Stories
« Reply #5 on: 11/08/2025 11:30 am »
he Lunar Module Descent Engine: Apollo’s Most Complex Rocket Motor

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Nov 8, 2025
The Lunar Module’s Descent Propulsion System (DPS) was the first engine in history that could throttle continuously in deep space — a breakthrough that made Apollo’s lunar landing possible. This engine had to ignite once, vary its thrust smoothly from 10 to 100 percent, avoid combustion instability, and hold steady while the LM hovered just feet above the Moon.
In this video, we explore the real engineering behind the DPS: its hypergolic fuels, injector plate design, the early “chugging” instability problem, throttle control logic, and how the engine kept working even as Apollo 11 pushed it to its limits.
If you enjoy deep dives into Apollo engineering, this one’s for you.

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Offline catdlr

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Re: The Lunar Module Engineering Stories
« Reply #6 on: 11/10/2025 04:29 am »
The Lunar Module’s Ascent Engine: The Rocket That Had No Test Flight

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Nov 9, 2025
Inside the Lunar Module’s Ascent Engine — the rocket NASA never test-fired as a complete unit, yet trusted to lift every Apollo crew off the Moon. Discover how engineers built an ultra-reliable, pressure-fed motor that had to work perfectly the first time.

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Offline catdlr

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Re: The Apollo Lunar Module Engineering
« Reply #7 on: 11/12/2025 03:18 am »
The Lunar Module’s RCS: The Tiny Thrusters That Saved Every Landing

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Nov 11, 2025
The Lunar Module relied on 16 tiny thrusters to survive every landing.
 These attitude-control jets balanced the LM during descent, held it steady on ascent, and made each docking possible.
 Discover how these small hypergolic engines quietly became one of Apollo’s most critical systems.

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Offline litton4

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Re: The Apollo Lunar Module Engineering
« Reply #8 on: 11/13/2025 12:46 pm »
Very interesting, but does everyone else get the huge ratio of adverts to content?

I'm seeing over half a minute of adverts for every couple of mins of content!!

This is in a separate browser window, not embedded....
« Last Edit: 11/13/2025 12:51 pm by litton4 »
Dave Condliffe

Offline catdlr

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Re: The Apollo Lunar Module Engineering
« Reply #9 on: 11/15/2025 06:16 am »
Very interesting, but does everyone else get the huge ratio of adverts to content?

I'm seeing over half a minute of adverts for every couple of mins of content!!

This is in a separate browser window, not embedded....

I view all YouTube videos in Chrome and Firefox using the same ad blocker, so I never see any ads. Paradise.  Get one.
« Last Edit: 11/15/2025 06:18 am by catdlr »
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Offline catdlr

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Re: The Apollo Lunar Module Engineering
« Reply #10 on: 11/15/2025 06:17 am »
Inside the Lunar Module’s Wiring Maze: How Thousands of Conductors Kept Apollo Alive

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Nov 14, 2025
Inside the Lunar Module was a hidden electrical world: thousands of conductors, precision-routed harnesses, shielded data lines, and the buses that kept Apollo’s lunar lander alive.
 In this deep dive, we open the LM’s skin and follow the wiring that powered the first landing on the Moon. Engineers, this one is for you.

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Offline catdlr

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Re: The Apollo Lunar Module Engineering
« Reply #11 on: 11/19/2025 09:29 pm »
How Apollo’s Engineers Simulated Lunar Landings on Earth

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Nov 16, 2025
Apollo’s engineers faced an impossible problem: how do you practice landing on a world no one has ever visited? This video explores the remarkable machines—free-flying trainers, giant gantries, and full-scale simulators—that taught astronauts how to fly the lunar module on Earth long before touching down on the Moon.

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Offline catdlr

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Re: The Apollo Lunar Module Engineering
« Reply #12 on: 11/19/2025 09:31 pm »
The Apollo Guidance Computer: How a 70-Pound Machine Landed the Lunar Module on the Moon

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Nov 18, 2025
The Apollo Guidance Computer aboard the lunar module was a 70-pound digital machine that executed the most demanding real-time flight control ever attempted. Built from thousands of NOR-gate integrated circuits and powered by hand-woven memory, it shaped engine thrust, fired reaction thrusters, processed inertial data, and steered the lunar module safely to the Moon. This video dives into how the computer actually worked—from accelerometer pulse integration to descent engine throttle control.

 If you spot anything that needs correction, feel free to comment. Apollo engineering deserves precision.

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Offline catdlr

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Re: The Apollo Lunar Module Engineering
« Reply #13 on: 11/21/2025 06:05 pm »
Apollo 11’s Lunar Module EXPOSED: Structure, Thermal Shielding & Control Systems Explained



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Nov 21, 2025
Step inside Apollo 11’s Lunar Module “Eagle” and explore how its structure, thermal shielding, and multi-layered control systems really worked. From ultra-thin aluminum frames to 25-layer insulation blankets, throttleable descent engines, and redundant guidance computers, this deep dive reveals the engineering that carried Neil Armstrong and Buzz Aldrin safely to the lunar surface — and back to orbit.
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Offline Blackstar

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Re: The Apollo Lunar Module Engineering
« Reply #14 on: 11/21/2025 07:24 pm »
Very interesting, but does everyone else get the huge ratio of adverts to content?

I'm seeing over half a minute of adverts for every couple of mins of content!!

This is in a separate browser window, not embedded....

I view all YouTube videos in Chrome and Firefox using the same ad blocker, so I never see any ads. Paradise.  Get one.

What ad blocker do you use for Firefox?

Offline catdlr

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Re: The Apollo Lunar Module Engineering
« Reply #15 on: 11/21/2025 07:44 pm »
Very interesting, but does everyone else get the huge ratio of adverts to content?

I'm seeing over half a minute of adverts for every couple of mins of content!!

This is in a separate browser window, not embedded....

I view all YouTube videos in Chrome and Firefox using the same ad blocker, so I never see any ads. Paradise.  Get one.

What ad blocker do you use for Firefox?

The same extension is compatible on Chrome or Firefox:  UBlock Lite
« Last Edit: 11/21/2025 07:46 pm by catdlr »
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Offline catdlr

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Re: The Apollo Lunar Module Engineering
« Reply #16 on: 11/23/2025 05:41 pm »
The Lunar Module Landing Radar: The Sensor That Saved Every Descent

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Nov 23, 2025
Uncover the hidden engineering behind Apollo’s Lunar Module Landing Radar — the silent, rock-solid sensor that delivered the altitude and velocity data that saved every Moon landing. A full deep-dive into its phased-array design, Doppler beams, FM-CW altimeter, flight tests, and the problems NASA solved on the way to perfection.

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Offline catdlr

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Re: The Apollo Lunar Module Engineering
« Reply #17 on: 11/26/2025 03:38 am »
Lunar Module Oxygen System: The Plumbing That Kept the Crew Alive

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Nov 25, 2025
Dive into the engineering behind the lunar module’s oxygen system—the cryogenic tanks, pressure regulators, flow paths, suit circuit, and the plumbing that kept astronauts alive on the Moon. Discover how Apollo’s life-support machinery controlled cabin pressure, fed the suits, and delivered oxygen with near-zero margin for error. A deep, technical look at the system that made every lunar mission possible.

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Offline JAFO

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Re: The Apollo Lunar Module Engineering
« Reply #18 on: 11/26/2025 04:19 am »
Very interesting, but does everyone else get the huge ratio of adverts to content?

I'm seeing over half a minute of adverts for every couple of mins of content!!

This is in a separate browser window, not embedded....


I broke down and bought a YouTube monthly subscription. I listen to a lot of stuff on yt while in my shop or commuting (currently grinding my way through the Coast Guard Oceangate hearings) and maybe its my advancing years and not wanting to waste them listening to advertising drivel, but it’s worth $15/month to hear things uninterrupted.


In the evening at home we’ll just bring up old documentaries or clips from new talk shows, better than most of the stuff on Netflix/hulu, etc.
« Last Edit: 11/26/2025 05:11 am by JAFO »
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Offline catdlr

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Re: The Apollo Lunar Module Engineering
« Reply #19 on: 11/29/2025 04:50 pm »
The Lunar Module’s Water System: How Apollo Handled Drinking, Cooling & Waste

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Nov 29, 2025
Explore the hidden engineering behind the lunar module’s water system—how Apollo handled drinking water, cooling loads, and waste using pre-filled tanks, water-glycol loops, nitrogen-bladder expulsion, and the sublimators that kept astronauts and avionics alive on the Moon. A detailed and historically accurate deep dive into one of Apollo’s least-seen but most essential life-support systems.

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