Scramjet | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-05-06

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Scramjet


00:00:44 1 History
00:00:53 1.1 Before 2000
00:04:23 1.2 Progress in the 2000s
00:07:28 1.3 Progress in the 2010s
00:11:21 2 Design principles
00:15:15 2.1 Basic principles
00:18:41 3 Theory
00:30:07 4 Advantages and disadvantages of scramjets
00:30:20 4.1 Advantages
00:31:05 4.2 Special cooling and materials
00:33:08 4.3 Vehicle performance
00:50:54 4.4 Initial propulsion requirements
00:52:16 4.5 Testing difficulties
00:52:57 4.6 Disadvantages
00:53:16 5 Advantages and disadvantages for orbital vehicles
00:53:29 5.1 Propellant
00:55:52 5.2 Thrust-to-weight ratio
00:57:27 5.3 Need for additional propulsion to reach orbit
00:59:16 5.4 Reentry
01:00:01 5.5 Costs
01:01:38 5.6 Issues
01:03:19 6 Applications



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SUMMARY
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A scramjet (supersonic combustion ramjet) is a variant of a ramjet airbreathing jet engine in which combustion takes place in supersonic airflow.  As in ramjets, a scramjet relies on high vehicle speed to compress the incoming air forcefully before combustion (hence ramjet), but whereas a ramjet decelerates the air to subsonic velocities before combustion, the airflow in a scramjet is supersonic throughout the entire engine. That allows the scramjet to operate efficiently at extremely high speeds .