Why drag a heavy but frail lunomobile to the moon?

2024 Author: Seth Attwood | [email protected]. Last modified: 2023-12-16 15:55

Well, the Americans could not deny themselves the happiness of riding on the moon "with a breeze." The pleasure is more than dubious from the point of view of research work, but extremely spectacular. However, the pursuit of special effects played another cruel joke on them.

Photo: Lunomobile (NASA archive)

From the encyclopedia "Cosmonautics": "American Astronauts in 1971-72. during the last three expeditions on the spacecraft Apollo-15, Apollo-16 and Apollo-17, the Rover lunar self-propelled vehicle, delivered to the Moon in one of the compartments of the lunar cabin, was used to move on the lunar surface in the landing area.

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Two-seat self-propelled vehicle, four-wheeled. The design maximum speed is 13 km / h, in fact, the speed of 18 km / h was reached (when descending a slope). The service life is 65 km (the actual mileage was: during the flight of the Apollo 15 spacecraft - 27.2 km, Apollo 16 - 27.1 km, Apollo 17 - 35.7 km). The turning radius is 6 m, the braking distance is about 3 m. The self-propelled lunar vehicle is designed to overcome slopes with a steepness of up to 20 °, obstacles up to 0.3 m high and cracks up to 0.7 m wide.

The mass of the loaded lunar self-propelled vehicle is 725 kg (including the Rover itself - 211, astronauts with backpack life support systems - 364, scientific instruments - 54, survey and communication equipment - 69, samples of lunar rocks, etc. - the rest) …

The length of the self-propelled lunar vehicle - 3.1 m, width - 2.1 m, height - 1.1 m, track width - 1.83 m, width of each of the four wheels - 0.23 m, wheel diameter - 0.81 m …

The frame of the lunar self-propelled vehicle and the tubular chair are made of aluminum alloy, the seat and backrest are made of nylon. Strips of adhesive on the back support the backpack life support system, and ribbed nylon harness and dust fenders are provided.

Wheel suspension - torsion bar. All wheels are leading. The rims are braided from a wire with a diameter of 0.84 mm with a zinc coating. Titanium alloy strips are riveted to the rim to protect against abrasion and improve traction.

An electric motor with a power of 183, 9 W is mounted in the hub, connected to a single-stage gearbox (gear ratio - 80: 1). Additionally, there are front and rear electric motors (73.5 W each, gear ratio - 257: 1), connected to the wheels by special rods and providing a turn.

The lunar self-propelled vehicle is powered by two non-rechargeable silver-zinc batteries, each with a resource of 121 Ah, power - 150 W, rated voltage - 36 V, operating temperature - 4-52 ° C.

The control panel contains: speedometer (graduated from 0 to 20 km / h); pitch and roll indicator (graduated from + 25 ° to -25 ° С); heading indicator with azimuth limb and digital indicators of azimuth, distance traveled and distance from the lunar cabin in a straight line; panel of the alarm system for signaling the failure of batteries, electric motors, etc.

The "Rover" is controlled by an aircraft-type steering column located between the seats. By deflecting the column back and forth, the travel speed is adjusted, by turning about the axis - the rotation of the lunar self-propelled vehicle. The button at the base of the column is used to switch from forward to reverse. The braking of the lunar self-propelled vehicle is carried out by changing the direction of the current in the electric motors."

The first thing that catches your eye is the frank "weakness" of the lunomobile. All four engines on its wheels add up to exactly 1 (one) horsepower. But these are executive motors, they would probably take such power, but who will allow them? After all, the total power of the two batteries is 300 W, that is, only 0.4 liters. With. The mass of this "shaitan-arba" is like that of the "Zaporozhets", and only a centner less than that of the "Zhiguli", and the power is 0.4 liters. With.? I looked around the house for a household appliance with the power of an American moon car. Drill - 750 W, printer - 700 W, grinder - 420 W, finally, the old coffee grinder - 115 W. Can you imagine a Zaporozhets driving on dry sand with an engine not of 30 kW, but 0.3 kW? NASA specialists will say that I do not understand anything about lunomobiles, that on the Moon the Rover drove quickly on the sand, leaving deep ruts, dashingly climbing hills, etc. I also saw this. But that is a movie! And I - about life.

Take a stopwatch with a tape measure and run up one flight of stairs as quickly as possible. Measure the time it took and the height of the flight. Then multiply your weight (in kilograms) by the height of the flight (in meters) and divide by the time (in seconds) and 75. I am sure that the result (your horsepower) will be more than one. And there is nothing strange in this: any person can develop a power of 1 liter without any problems. with., trained people develop a power of several horsepower, and athletes - up to 10. Ask yourself: why was it necessary to drag a cart weighing 210 kg to the moon, that is, one and a half times more than the mass of both astronauts, if each of them can develop power for a long time (say, when walking) more than the power of this "car"?

The amateur cyclist can reach a speed of 30 km / h without any problems. At the speed of the lunar car (10 km / h), the cyclist spends the same amount of energy as during normal walking, at a speed of 5 km / h - 4 times less. That is, if it was really about the Moon, then American engineers would connect two bicycles together and make the astronauts pedal, while the cart would be 10 times lighter than the Rover, and its power - 10 times more.

However, such a structure would certainly not impress Stanley Kubrick (we remind you that there is reliable information that it was he who directed the grandiose lunar hoax performance at the request of the American leadership): he needed to show the automotive power of the United States. But in order to give that cart a power of at least 4 liters. with., it had to load 300 kg of batteries. Here are the American crooks and got out: they loaded 30 kg of batteries, and the air was filled with chatter about the breakneck speed of this unit. To paraphrase a well-known anecdote: the lunomobile was "strong", but not powerful.

There are also inconsistencies. In some photographs of the lunar car, you pay attention to the ruts from the wheels. Rather, their complete absence. There are as many footprints from the feet of the astronauts as you like, but from the wheels - no! Neither front nor back! How did the lunomobile end up in this particular place without leaving a trace of its arrival? Not otherwise, I flew through the air. More precisely, in terms of vacuum: there is no air on the moon …

And most likely, this is just a model, which they brought in their hands and installed as a decoration. In addition, with the lunar attraction, the dust from under the wheels should fly meters up, and she, the devil, rises very low, as it should be on Earth.

And one more thing: a three-meter long lunomobile could not fit into that compartment of the lunar module, where, according to NASA reports, it was during the flight. The length of that compartment is only one and a half meters.

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