Hydrogen rocket fuel | Wikipedia audio article

This is an audio version of the Wikipedia Article: https://en.wikipedia.org/wiki/Liquid_... 00:00:28 1 Description 00:01:33 2 History 00:01:42 2.1 Early development, 1926 00:02:33 2.2 World War II era 00:03:43 2.3 1950s and 1960s 00:06:01 3 Kerosene 00:07:34 4 Hydrogen 00:09:37 4.1 Upper stage use 00:10:15 4.2 Comparison to kerosene 00:11:50 5 Lithium and fluorine 00:13:34 6 Methane 00:14:47 7 Monopropellants 00:16:01 8 Present use 00:17:40 9 Table 00:18:15 9.1 Definitions 00:19:10 9.2 Bipropellants Listening is a more natural way of learning, when compared to reading. Written language only began at around 3200 BC, but spoken language has existed long ago. Learning by listening is a great way to: increases imagination and understanding improves your listening skills improves your own spoken accent learn while on the move reduce eye strain Now learn the vast amount of general knowledge available on Wikipedia through audio (audio article). You could even learn subconsciously by playing the audio while you are sleeping! If you are planning to listen a lot, you could try using a bone conduction headphone, or a standard speaker instead of an earphone. Listen on Google Assistant through Extra Audio: https://assistant.google.com/services... Other Wikipedia audio articles at: https://www.youtube.com/results?searc... Upload your own Wikipedia articles through: https://github.com/nodef/wikipedia-tts Speaking Rate: 0.8657961766638906 Voice name: en-GB-Wavenet-B "I cannot teach anybody anything, I can only make them think." Socrates SUMMARY ======= The highest specific impulse chemical rockets use liquid propellants (liquid-propellant rockets). They can consist of a single chemical (a monopropellant) or a mix of two chemicals, called bipropellants. Bipropellants can further be divided into two categories; hypergolic propellants, which ignite when the fuel and oxidizer make contact, and non-hypergolic propellants which require an ignition source.