関連する実験動画
Updated: Jul 11, 2026

06:14
Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface
Published on: July 30, 2020
まとめ
Luna 9ミッションは,月面がカプセルを静的に支えることができ,少なくとも5 x 10^3 dynes/cm^2.3を保持することを明らかにしました. 着陸ダイナミクスの分析では,1~2×10^5ダイネ/cm^2.2.の耐力を持つことが示唆されています.
科学分野:
- 月面地質学 月面地質学
- 宇宙探査エンジニアリング
背景:
- 月面の機械的性質を理解することは,宇宙船の安全な着陸に不可欠です.
- 過去のミッションは,月面の土壌の耐久性に関する限られたデータを提供した.
研究 の 目的:
- Luna 9の着陸を基に月の表面の耐力量を決定する.
- 月面の土壌強度に関する保守的な見積もりを作成するために.
主な方法:
- 月面上のLuna 9カプセルの静的負荷分析. 月面上のLuna 9カプセルの静的負荷分析. 月面上のLuna 9カプセルの静的負荷分析. 月面上のLuna 9カプセルの静的負荷分析.
- 利用可能な衝突データを用いて,Luna 9の着陸シーケンスのダイナミック分析.
主要な成果:
- 月面は静的に少なくとも 5 x 10^3 dyne/cm^2.2. を支えることができる.
- 着陸ダイナミクスの分析は,表面負荷能力の下限が1-2 x 10^5 dyne/cm^2であることを示しています.
結論:
- 月面は,宇宙船の着陸をサポートするのに十分な耐力を示しています.
- 離陸の不確実性のためにベアリング能力の見積もりを精錬するためにさらなる分析が必要である.
関連する概念動画
Gravity between Spherical Bodies
Newton's law of gravitation describes the gravitational force between any two point masses. However, for extended spherical objects like the Earth, the Moon, and other planets, the law holds with an assumption that masses of spherical objects are concentrated at their respective centers.
This assumption can be proved easily by showing that the expression for gravitational potential energy between a hollow sphere of mass (M) and a point mass (m) is the same as it would be for a pair of extended...
This assumption can be proved easily by showing that the expression for gravitational potential energy between a hollow sphere of mass (M) and a point mass (m) is the same as it would be for a pair of extended...
Gravitation
In the years before Newton, a general belief prevailed that different laws governed objects in the sky than objects on Earth. When Kepler wrote down the three laws of planetary motion, explaining in detail the geometrical properties of the planetary orbits around the Sun, there was no immediate idea to discern their connection with more fundamental laws. It was Isaac Newton who, in 1665–66, figured out the connection between planetary motion, the motion of the moon around the Earth, and the...
Tidal Forces
The origin of Earth's ocean tides has been a subject of continuous investigation for over 2000 years. However, the work of Newton is considered to be the beginning of the proper understanding of the phenomenon. Ocean tides are the result of gravitational tidal forces. These same tidal forces are present in any astronomical body; they are responsible for the internal heat that creates the volcanic activity on Io, one of Jupiter's moons, and the breakup of stars that get too close to black holes.
Impact: Problem Solving
In an experiment conducted during a Mars mission, a rover propels a projectile with an initial velocity, and the projectile rebounds after colliding with the Martian surface. To ascertain the maximum height attained by the projectile after this collision, the known restitution coefficient and acceleration due to gravity are employed.
By designating the launch point as the origin and utilizing kinematic equations, the vertical component of the projectile's velocity at the point of impact is...
By designating the launch point as the origin and utilizing kinematic equations, the vertical component of the projectile's velocity at the point of impact is...
Variation in Acceleration due to Gravity near the Earth's Surface
An object's apparent weight is its weight measured by a spring balance at its location. It is different from its true weight, the force with which the Earth pulls it, because of the Earth's rotation. Mathematically, an object's apparent weight equals its true weight minus the centripetal force that keeps it in a circular motion along with the Earth's surface every 24 hours.
The difference between the true and apparent weights is proportional to the square of the Earth's angular speed. Since the...
The difference between the true and apparent weights is proportional to the square of the Earth's angular speed. Since the...
Acceleration due to Gravity on Other Planets
The gravitational acceleration of an object near the Earth's surface is called the acceleration due to gravity. It can be measured by conducting simple experiments on Earth. However, such an experiment is impossible to conduct on the surface of other planets.
Astronomical observations are thus used to measure the acceleration due to gravity on other planets. This can be determined by observing the effect of a planet's gravity on objects close to it. The crucial factor that helps in this...
Astronomical observations are thus used to measure the acceleration due to gravity on other planets. This can be determined by observing the effect of a planet's gravity on objects close to it. The crucial factor that helps in this...

