Apollo 16 Astronaut Charlie Duke's Incredible Keynote at the Astro Awards

Key Concepts

• Apollo Program: NASA's human spaceflight program that successfully landed the first humans on the Moon.
• Apollo 16 Mission: The fifth crewed mission of the Apollo program, which landed on the Moon in April 1972.
• Lunar Module (LM): The spacecraft used to land on the Moon.
• Command Module (CM): The spacecraft that orbited the Moon and returned astronauts to Earth.
• Saturn V Rocket: The powerful rocket used to launch Apollo missions to the Moon.
• Lunar Surface Experiments Package (LSEP): A collection of scientific instruments deployed on the Moon.
• Extravehicular Activity (EVA): A spacewalk or moonwalk.
• Vomit Comet: An aircraft used to simulate microgravity for astronaut training.
• Artemis Program: NASA's current program to return humans to the Moon.

Apollo 16 Mission and Charles Duke's Journey

This summary details the experiences and insights of Brigadier General Charles Duke, an Apollo 16 astronaut, US Air Force officer, and one of the twelve individuals to walk on the Moon. His narrative spans his early career as a fighter and test pilot to his historic lunar landing and his reflections on space exploration.

Early Career and Path to Astronaut

• Foundation: Duke's journey began with a passion for airplanes, leading him to the US Naval Academy and then the Air Force. He soloed in October 1957, coinciding with the launch of Sputnik, which ignited the space race.
• Air Force Service: After graduating from flight training, he was assigned to Germany in 1959. During this time, NASA was formed, and the space race intensified with Yuri Gagarin's flight in 1961 and Alan Shepard's subsequent mission.
• President Kennedy's Moon Challenge: Duke highlights Wernher von Braun's letter to President Kennedy, suggesting that while the US couldn't compete with the Soviets in Earth orbit, they could beat them to the Moon. This letter is presented as a pivotal moment that committed the US to the Apollo program.
• Apollo Program Development: The decision was made to launch all necessary components (Lunar Module, Command Module) on a single rocket, leading to the development of the Saturn V.

The Saturn V Launch and Journey to the Moon

• Saturn V Specifications: The Saturn V rocket is described as a colossal vehicle: 363 feet tall, weighing 6.12 million pounds, and generating 7.5 million pounds of thrust in its first stage.
• Launch Experience: Duke recounts the intense vibration and shaking during liftoff, noting that the experience was more violent than anticipated. He emphasizes the critical countdown and the desire to avoid an abort. The first stage burn accelerated them to 4.5 Gs, burning 4 million pounds of fuel in just over two minutes.
• Transition to Second Stage: The shutdown of the first stage engines resulted in an abrupt shift from 4.5 Gs to zero, requiring astronauts to brace themselves. Upon separation of the boost protective cover, Duke experienced his first view of Earth from space through a small window, describing it as a spectacular sight of the blue Atlantic fading into the blackness of space.
• Earth Orbit and Trans-Lunar Injection: The Apollo 16 mission orbited the Earth 1.5 times over Australia before reigniting the third stage of the Saturn V to achieve escape velocity for the journey to the Moon.
• View of Earth: Duke describes seeing Earth from approximately 20,000 miles away as a "jewel suspended in the blackness of space," noting the absence of visible signs of civilization, only geographical features like the Rocky Mountains and the Gulf of Mexico. He also mentions a brief feeling of airsickness, which passed.
• Journey Duration: The trip to the Moon took approximately 72 hours.

Lunar Module Malfunction and Mission Control's Role

• Separation and Lunar Orbit: Upon reaching lunar orbit, the Lunar Module (LM) separated from the Command Module (CM).
• Control System Issue: An hour before the planned lunar landing, a critical issue arose with the LM's control system when attempting to ignite the main engine. This led to an immediate abort order from Commander John Young.
• Mission Control as Heroes: Duke strongly emphasizes the crucial role of Mission Control in overcoming such critical issues. He states, "Mission Control were the heroes of Apollo. They and every flight they overcame some problem that was going to abort the mission." He cites Apollo 13 as an example of their problem-solving capabilities.
• Workaround and Landing Clearance: After two orbits of analysis, Mission Control devised a workaround for the control system issue. Flight Director Jerry Griffin gave the "go" for landing on the next revolution, a decision Duke highlights as being made by the flight director, not just NASA hierarchy.

Apollo 16 Crew and Lunar Surface Operations

• Crew: The Apollo 16 crew consisted of Commander John Young, Lunar Module Pilot Charles Duke, and Command Module Pilot Ken Mattingley. Duke is the only surviving member of his crew.
• Lunar Module Configuration: The mission utilized the Lunar Module, which was extracted from the third stage of the Saturn V rocket.
• Lunar Terrain and Landing Site: Apollo 16 landed in the Descartes Highlands, an area with significant elevation differences (8,000 feet compared to earlier missions). The mission covered a portion of the Moon's front face, with future missions like Artemis targeting the South Pole.
• Evidence of Landing: Duke addresses skepticism about the Moon landings, pointing to the presence of the descent stage, experiments package, and vehicle tracks at the landing sites as overwhelming evidence. He humorously questions why, if the landings were faked, they would have been faked nine times.
• Landing Site Selection: John Young's piloting skills were crucial in selecting a safe landing spot, avoiding large craters and rocks. The LM landed perfectly level.
• Lunar Rover: The mission utilized a Lunar Rover, which had to be folded and bolted to the outside of the LM. Its deployment involved a complex unfolding process. The rover weighed 80 lbs on the Moon.
• Lunar Gravity and Movement: Duke describes the experience of 1/6th gravity, noting that while it allowed for significant bouncing, maintaining balance was challenging. He contrasts his own movements with John Young's agility.
• Lunar Grand Prix: A humorous anecdote involves a "Lunar Grand Prix" where John Young drove the rover while Duke navigated.
• Fender Incident: Duke recounts accidentally pulling off a part of the rover's fender, which led to dust showering down on them.
• Sample Collection: The crew collected approximately 260 pounds (98 kg) of lunar samples.
• Footprints and Soil: Duke notes that footprints on the Moon are still visible and that the lunar soil remained unconsolidated even at a depth of 10 feet.
• EVA Procedure: The order of exiting the Lunar Module was determined by the hatch design, with the Commander always exiting first. The Lunar Module Pilot would exit last, maneuvering backwards through the hatch.
• Craters: The crew visited large craters, maintaining a safe distance due to the risk of falling in.
• Personal Memento: Duke shares a touching moment where he left a photograph of his family on the Moon, which began to shrivel due to the surface temperature of approximately 210°F (99°C). He notes that all equipment left on the Moon remains there.
• Naming Craters: The crew informally named craters to aid in navigation and communication with Mission Control.

Return to Earth and Re-entry

• Uneventful Return: The return journey was described as uneventful.
• Re-entry Dynamics: The Apollo capsule's design, with an offset center of gravity, created lift during re-entry, causing it to want to "bounce out" of the atmosphere. The autopilot was used to counteract this, performing a maneuver similar to a "split S" in aviation to pull the capsule back into the atmosphere.
• Splashdown: The capsule splashed down in the South Pacific, where a recovery carrier was on station.
• Inverted Landing: Due to a delay in pushing a circuit breaker, the parachutes pulled the capsule over, resulting in an inverted landing. The Apollo capsule was designed to float stably in either orientation.
• Recovery: Large balloons were deployed to flip the capsule upright, and the Navy recovered the crew.

Post-Mission Reflections and Q&A

• Ladder Length: Duke explains that the LM ladder was intentionally short (2-3 feet above the surface) to prevent damage to the landing gear if the landing was hard.
• Getting Back In: While exiting was easy, re-entering the LM was more challenging and required practice in 1/6th gravity simulations.
• "Moon Olympics" and Fear: Duke recounts an incident where he attempted a high jump on the Moon, lost balance, and fell. This was the only time he experienced fear during the mission, but he managed it by rolling and breaking his fall. The incident led to Mission Control prohibiting further "moon Olympics."
• The Bunny Hop: The "bunny hop" movement was adopted by astronauts due to the challenges of walking in 1/6th gravity and the rigidity of the pressurized suits. Extensive training in zero-gravity parabolas helped astronauts adapt.
• Suit Rigidity: The Apollo suits were rigid due to pressurization, making bending at the waist impossible. Squatting was necessary for picking up objects.
• Lunar Legacy Award: Duke was presented with the "Lunar Legacy Award" for his contributions to the Apollo 16 mission.
• Personal Qualities: Duke is consistently described as a pleasant and kind individual, attributing his demeanor to his Southern upbringing and his mother's advice to "be nice."
• Call to Action: Duke expresses a desire for humanity to return to the Moon, passing the "baton" to the next generation of explorers.

This summary aims to capture the detailed accounts, technical explanations, and personal reflections shared by Brigadier General Charles Duke, providing a comprehensive overview of his Apollo 16 mission and his enduring legacy in space exploration.