超载叽
超载叽

“啊哒”~嘤嘤怪+硬妹,一个经不起批评的人。科幻文学硕士,星球大战中文网副站长。关注科技、游戏、艺术、美食、历史等领域。曾服务于多家主流媒体,主持过文化、科技、游戏等栏目。 创作,是要发现和体现属于自己的趣味。 此博客登载本人原创文字和编译内容,未经授权严禁转载。 “伏枥骅骝千里志,经霜乔木百年心。”

Lost "Artemis", the United States will not return to the moon

There is a deep logic behind the space race: once an opponent has more advanced technology, there must be a belief in superiority.

NASA's plan to return to the moon is as ill-fated as the name "Artemis". It was originally planned to be launched in the first half of 2021. A year later, the fuel leakage and the failure of the discharge pipeline are still difficult to solve.

In Greek mythology, the moon god Artemis was the sister of Apollo, the sun god. His love affair was obstructed by Apollo, and he could only see his lover who became "Orion" from a distance.

The "Artemis Project", which carried the "Orion" spacecraft and repeatedly "bounced tickets", still lived in the shadow of the "Apollo Project" half a century ago.

Artemis' ill fate

"Project Artemis" is stuck at the first step of the progress bar. Do it all at once, second time tired, third time exhausted. "Artemis 1" has been delayed for far more than three times.

In 2019, NASA officially announced the implementation of the "Artemis Program", with the goal of sending American astronauts to the moon by 2024 and establishing a permanent base on the lunar surface by 2028, laying the foundation for landing on Mars and deep space exploration missions.

The Trump administration at the time was ambitious, making it clear that by 2024, a man and a woman would land on the moon, restoring America to space glory. This world-shattering plan actually disrupted the right steps: sending probes, robots, and then sending people to the moon. The White House forced NASA to re-prioritize, making the plan difficult.

The moon is "permanent existence" and will not "run away". A hurried launch of a manned moon landing will only add complexity and cost, with little benefit. Even if the moon landing is successful, a man and a woman will certainly not be able to build shelters, maintain water sources, produce oxygen and rocket fuel, and lay lunar orbits like robots. They spend at least $30 billion back and forth without providing the infrastructure for subsequent moon landings.

The White House guarantees $1.6 billion a year, which is only a "small end" of spending. Industry insiders judge that once Trump fails to be re-elected as president, the next government will definitely cancel this money-burning plan. However, in February 2021, the Biden administration decided to support NASA and carry out the "Artemis program" to the end.

Similar to the "Apollo Program", if the Soviet Union had not launched the first artificial satellite and sent the first astronaut into space, the US manned lunar landing project would not have been able to progress smoothly. Because of the deep connotation of the space race, once the opponent has more advanced technology, then there must be a better belief.

China's lunar exploration project is divided into "exploration", "boarding" and "stationary", which are called "big three steps". At the end of 2020, "Chang'e 5" successfully returned to Earth after sampling the moon. Before the 2030s, China will achieve astronauts landing on the moon. At the same time that the "Artemis Project" announced the postponement of the launch again, the astronauts of the Shenzhou 14th crew on the Chinese space station opened the door of Wentian Laboratory and completed all the scheduled tasks.

2030 "The deadline is approaching", and the United States has to set the realization date of the "Artemis Plan" in 2028 or even 2024.

The government is too hasty, and NASA is not very reliable. The U.S. Government Accountability Office found that NASA and the Space Launch System (SLS) prime contractor Boeing "underestimated the complexity of manufacturing and assembling the core engine stages."

And private companies that outsource are in trouble. Originally, companies such as Blue Origin, Space X, Bigelow Aerospace, and Virgin Galactic, which entered space purely for commercial interests, promoted the "New Space" movement, and gave years of monopoly in the model of low cost, high efficiency and economies of scale. The "old space" partnership maintained by the government and military contractors is a blow.

The "PPP" model of cooperation between the government and social capital has been hampered by continuous legal proceedings. A lawsuit, casually, will take 7 months. NASA signed a $967 million contract in 2020 with Blue Origin, SpaceX and another company to fund the development of the Artemis lunar lander.

NASA chose Space X, which caused Blue Origin to be very dissatisfied. While filing a lawsuit, it publicly criticized Space X's next-generation "Starship" for being extremely complicated and too risky. In recent years, Bezos, the founder of Blue Origin, and Musk, the founder of Space X, have been "head-to-head": the wealth list is competing for the first place, and the war of words has frequently escalated. During the lawsuit, NASA suspended its cooperation with SpaceX.

The progress of "Artemis 1" may stagnate at any time.

The most powerful rocket ready to go

In the "new space race" of the 21st century, the "Artemis Project", which has been held back by several parties, seems to be difficult to surpass the "Apollo Project". From 1968 to 1972, the United States completed 9 manned lunar landing missions, 6 successful landings, and a total of 12 astronauts landed on the moon.

In the 1970s, the U.S. was supposed to expand its manned moon landing efforts and continue to explore Mars or the boundless universe. Such claims, however, are more of a space enthusiast's wish. For the presidents of the United States in the 1970s and 1980s, the priorities were the Vietnam War, the oil crisis, and not squandering taxpayer dollars.

In space, physics problems equal economics problems. The behemoth standing on the launch pad waiting to lift off, 90% of its mass is fuel, 8% of its mass is metal casing, and the things sent into space - people and cargo, only account for 2% of the total mass. In other words, the mechanism of manned spaceflight is to strap people to several disposable fireworks with thousands of tons of fuel and very few items. Fifty years ago, the cost per kilogram of cargo was more than $10,000.

Therefore, after the last manned moon landing of the "Apollo program" in December 1972, for half a century, people can only see astronauts raising ants and turning somersaults in a mere few kilometers above the earth. Space exploration in the 21st century is such a surprise to people in the 20th century. After all, the mainstream idea in the 1970s was to mine asteroids in the 1990s and explore the moons of Jupiter and Saturn in 2000.

It's not all about the money either. Since 2003, the United States has spent more than $4.79 trillion in Iraq, Afghanistan and other related wars. Roughly estimated, it is equivalent to the cost of at least 40 large-scale Mars missions, enough to establish a permanent settlement on Mars.

Today's America needs the Artemis Project to appear "great again".

"Project Artemis" is completely designed around "manned". The "Orion" spacecraft consists of three parts. The first is the crew cabin, which can accommodate 4 astronauts to work and live; the second is the service cabin, which houses the crew's life support system, engine and fuel reserves; the third is the launch center system, in case of any accident, the system can send the crew cabin to the Pull to a safe place.

In order to complete manned and heavy load missions, the SLS built by NASA, named "the most powerful rocket in the world", surpassed the legend of the "Apollo" era - Saturn V in many ways. It includes a cargo bay, an exploration upper stage (EUS), a core stage, and two additional solid rocket boosters.

The SLS weighs 2,721 tons, of which 2,358 tons are fuel. The four RS-25D engines are currently the world's largest stage-combustion liquid hydrogen-oxygen engines, with a maximum thrust of 39.1MN (meganewtons) at takeoff, 15% higher than the Saturn V's 34.5MN.

It is reported that the journey of "Artemis 1" is 2.09 million kilometers and lasts for 42 days. "Orion" has a load of 54.4 kilograms and contains three mannequins that simulate astronauts, Snoopy dolls and other items.

With the "Orion" into lunar orbit, there are also 10 cube satellites. CubeSat was already deployed on the rocket last July. The launch is delayed by a year, and there are currently 5 rechargeables. These CubeSats carry different scientific research missions, studying different fields such as microorganisms, water, hydrogen content, solar particle infrared and so on.

CubeSats have low cost, poor redundancy, and relatively high failure rate. It is also expected that a few cannot complete the task.

Space Shuttle Makeover, Commercialization of the Moon?

A more important reason for the difficulty of returning to the moon for the United States is that the cost of trial and error is high, and it has almost "wasted" more than 30 years of time. With the retirement of the last three space shuttles in 2011, the United States even lost the ability to send humans into space — at one point paying Russia $80 million to send an astronaut to the space station.

The space shuttle program, created in the early 1970s, planned to create an inexpensive low-orbit vehicle that could be delivered every two weeks. Everyone complains that rockets are too expensive, and they don't realize that rockets are actually missiles that send cargo into space. NASA was founded on the basis of the U.S. Naval Research Laboratory and the U.S. Army Ballistic Missile Agency, which employed captured German missile expert von Braun, later chief designer of the Saturn V launch vehicle.

In the 1960s, NASA was the sixth corner of the Pentagon. The Pentagon launches missiles and never considers cost issues such as recovery. However, the popularity of television has made the "luxury" of the rocket clear at a glance. After all, it is not a missile that is fired at the enemy's camp, and it will burn out if it burns.

The space shuttle program began with an eye toward recycling rocket boosters: scooping them up from the ocean, refurbishing them for reuse. It sounds very frugal, but the reality is that the booster is badly damaged and refurbished is much more expensive than building a new one.

Scientist and science fiction author David Brin's novel "Tank Farm Dynamo" may have some insightful thoughts on leaving the space shuttle's main fuel tanks in orbit By collecting and welding in space, the United States could have a low-cost annular facility in low-Earth orbit that generates artificial gravity and can accommodate more than 1,000 people.

A layer of meaning behind the story is that NASA's money-saving skills are simply not in the right place.

The "cost reduction and efficiency increase" under the recycling slogan strictly limits the creativity of engineers. For reuse, the cost per launch increases by about $500 million. For the sake of political distribution, Congress has distributed contracts for various parts of the space shuttle to its own constituencies, all over the United States, east, west, north and south, resulting in unnecessary and expensive logistics costs.

In the end, the total cost of the space shuttle program is about $1.5 billion per launch, enough to complete six manned rocket launches per year. The project was so puzzling that it terrified the Soviets at the time. Even NASA itself now admits that the space shuttle program was a mistake.

Since the Space Shuttle was NASA's primary launch vehicle, a number of follow-on programs were affected. A satellite of a certain size and mass, designed according to the specifications of the space shuttle's cargo bay, can only delay or cancel the launch. Space shuttle cost overruns squeezed research and development funds for better-performing launch vehicle technology, creating a vicious circle that made it increasingly expensive for NASA to fly into space.

In addition, the U.S. head of government changes every four or eight years, and NASA has to adjust its pace to accommodate the different blueprints of each administration. Anyway, since the 1970s, flying to Mars has always been the tune of "we will meet in another 20 years". This is how the current Biden administration is portraying it.

Space shuttles are not like the Millennium Falcon in "Star Wars". They take off from the ground and enter space instantly. They are gliders that need to be sent into space with rockets. Today, the popular favorite is the "space plane" that can enter low-Earth orbit directly from the ground.

The first aircraft to approach outer space largely "on its own" was the U.S. Air Force's X-15 supersonic rocket-powered aircraft, which entered service in the 1960s. The X-15 first fell from the B-52 carrier aircraft to an altitude of 13.7 kilometers, and then rose to more than 50 miles, and the pilot was qualified as an astronaut.

The success of the X-15 inspired the concept of consumption by space plane travel in the 21st century. In 2004, "Spaceship 1" was the first private space plane to reach space, flying over the space boundary "Carmen Line" at an altitude of 100 kilometers. Virgin Galactic and Blue Origin have both developed similar projects, allowing several passengers to admire the curves of the edge of the Earth against the backdrop of 100,000 meters of dark space in a few minutes of microgravity, a commercial race in low-Earth orbit.

Europe also has a very forward-looking and underfunded space plane program, Skylon, a single-stage orbital spacecraft envisaged by British Reaction Engines Co., Ltd., which has been developed since the 1980s. The aircraft uses a hybrid scramjet engine called the SABRE, also known as a synthetic air-breathing rocket engine.

It works by pulling oxygen from the atmosphere as an oxidant until speed reaches Mach 5, then switching to stored hydrogen, oxygen rocket fuel for faster speed and higher thrust. Because of the lack of money, so far only a concept test can be carried out.

All feats require great effort, and great effort requires great money. A good profit is both the purpose and the result. The same goes for lunar exploration.

No one owns the moon. According to the Outer Space Treaty (officially known as the Treaty on Principles Governing the Activities of States in the Exploration and Use of Outer Space, Including the Moon and Other Celestial Bodies), the moon belongs to no one.

Just like the development of the South Pole, as the cost of landing on the moon gradually becomes cheaper, one scientific laboratory will be established on the moon. When resources on the moon prove to be profitable and all agreements are at risk of failure, nations and corporations will fight for the best "turf" and defend themselves against the Outer Space Treaty in international courts. When trillions of dollars of profits can be realized, the moon will eventually be "commercialized" for large-scale development.

Such is the history of the earth.

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超载叽

Bring insistence to life. “历史奔跑,逃离人类,导致生命的连续性与一致性四分五裂。” 我们的生命横跨好几个时代,要面对或重建“一致性”,心里得有点“硬”东西。 物质享受和精神追求,两手抓两手都要硬。 硬骨头-美食栏目; 硬着陆-政治栏目; 硬通货-经济栏目; 硬吹死挺-文化/科技/游戏栏目; 周末夜狂热-随想栏目

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