Quote:
Originally Posted by euromodder
You're essentially describing the J58 engine in the A12 / YF-12 / SR-71 Blackbird ...
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Kind of, minus the introduction of fuel at the end called an afterburner of course.
Pratt & Whitney J58
https://en.wikipedia.org/wiki/Pratt_%26_Whitney_J58
Quote:
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The J58 was a single-spool turbojet with an afterburner.[1] It had a unique bleed from the compressor to the afterburner which gave increased thrust at high speeds.[2] This feature caused it to be referred to as a turboramjet in some writings.
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Doing a search on the turboramjet topic I found a combination that I have never seen before.
Commercial Near-Earth Launcher: Propulsion Choices
https://link.springer.com/chapter/10...-662-54744-1_4
The point of this discussion I believe is to explore the introduction or reintroduction of airflow and or pressure differentials at the nozzle exhaust of a ducted fan/propeller/jet thrust system.
These gadgets or approaches are every bit as important as business at the front end, typically the increases in efficiency of a bell-mouth curve inlet.
EDIT:
I found a video showing the electric fan (
cold jet -
my own term) Venturi engine by Hoversurf.
Flying car scale model first test flight using Venturi EDF
Quote:
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Hoversurf is well known for our Hoverbike. We know that propellers scare people and for the last few years we have been working very hard on our patented Venturi EDF technology. We are excited to present our 1:10 scale model of our future flying car that utilizes our Venturi EDF. This technology is safer, more compact, eco friendly and will replace propellers on all our future products. Thank you to all our subscribers and for your comments, we look forward to changing the future together.
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