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SuomiKaataa2

I would like to write about any scientific topic I like. I love Aeronautics, and my dream is to become an Astronaut. I focus on the Solar System but I am not limited by any interesting topic, which I will find on this journey. Especially, I am a big fan of Mercury, Gemini and Apollo era and the Space Race. I would like to get in and bring new approach on the history, since I was solar wind scientist. Suggestions are highly welcome! Enjoy!!

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The International Space Station orbital speed

Posted by Kaataa on November 27, 2022

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Weightlessness, or zero gravity, and tidal forces

Posted by Kaataa on November 23, 2022

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Type of orbits

Posted by Kaataa on June 14, 2021

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Rocket engine cycles

Posted by Kaataa on June 09, 2021

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Rocket engine propellants

Posted by Kaataa on April 12, 2021

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Kaataa: I am a person dealing with a lot of stuff, trying to learn art and craft to heal.

Popular posts

Delta (rocket family)

Note before you even start to read. I have started with this article in 2018. I have tried to go through all rocket types and families, which were launched or used or planned, but I needed to take a break. So, I had to change several things in the following article. I hope it will still stay consistent. Delta rocket family is American expendable launch system since 1960 with 95 per cent of successful launches. Currently Delta IV Heavy rocket remains in use as by November 2020. The original Delta rocket was developed and built by Douglas Aircraft Company and it has origin in Thor IRBM (deployed in the UK between the years 1959 and 1963). IRBM is abbreviation which stands for Intermediate Range Ballistic Missile. After Sputnik 1 was launched in October, 4, 1957, Thor was developed into a space program direction and become a basis of Delta rocket. Thor was developed into Delta, so basically Thor is the first rocket in Delta rocket family. The original Delta rockets used Thor as th

Titan (rocket family)

Titan is US family of expendable rockets in use between years 1959 and 2005. Totally it was launched 368 rockets, including all the manned Gemini project flights. Titan was part of the US intercontinental ballistic missile, Titan was used to launch probes out to the Solar system. The HGM-25A Titan I was the first rocket version used between years 1962 and 1965. It was first as a backup ICBM (intercontinental ballistic missile) in case that Atlas would be delayed. It was 2 stage rocket powered by RP-1 and liquid oxygen. The Titan II uses modified version of the LR-87 engine, that used combination of nitrogen tetroxide for its oxidizer and Aerozine 50 (50/50 mix of hydrazine and UDMH=unsymmetrical dimethylhydrazine) for its fuel instead of the liquid oxygen and RP-1 used in the Titan I. All together 12 Titan II Gemini launch vehicles were launched, including 2 unmanned tests and 10 manned flights with two-man crews. Launch of Gemini 11 on Titan GLV vs. Gemini 1 t

Turbojet, Turbofan Engines

Early jet engines worked on the process where the majority of the air passing into the inlet of the engine was used in the combustion and passed through the core of the engine to the exit of the engine exhaust. On the figure above you can see turbojet engine with all air going through the turbine. On Figure below there are two types of turbojets: centrifugal and axial. Many early turbojets were centrifugal, such as early Rolls-Royce engines. The outlet of the compressor stage is perpendicular to the axis of the rotation of the impeller. The main disadvantage is their quite large size. Early jets were subsonic, so drag wasn't such a problem. However as aircraft got faster it was needed to develop engine with higher performance, which led to axial turbojets. Axial flow turbojets compress the air parallel to the axis of rotation of the shaft. While axial flow engines are rather longer than centrifugal flow engines, the cross-sectional areas are smaller, which leads to smaller drag.

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