from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A jet engine that propels aircraft by igniting fuel mixed with air taken and compressed by the engine in a fashion that produces greater exhaust than intake velocity.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A jet engine in which forward motion forces air into an inlet, compressing it (as opposed to having a pump type device compressing the air for combustion with fuel), and where combustion is subsonic.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a simple type of jet engine; must be launched at high speed
Sorry, no etymologies found.
The ramjet is a device for using the interstellar hydrogen as a means for propulsion.
In addition there are two separate and distinct improvements to something called a ramjet, another rocket part, the blueprints of an experimental aviation cannon, a new atmospheric analyzer, and the formula for some sort of steel—this last, it seems, highly experimental.
These fields are maintained by a "ramjet" effect, energy picked up from interstellar gas as we mosey along.
Bussard's "ramjet" design used magnetic fields generated by the craft to scoop up the tenuous gas of interstellar space.
Once the plane is cruising at an altitude of 32 kilometers, ramjet engines common to military aircraft would kick in to take the Zehst hypersonic.
Bussard ramjet - November 28, 2009 added by atkinson | Images mcs+ to rate
The main idea now is to develop an engine which is able to take the aircraft from the tarmac to mach 6+ using basically one engine which combines a turbojet, ramjet, and last but not least a scramjet.
Considering how far the work on scramjets has gotten the main sticking point is a turbojet with the capacity to accelerate the craft to high mach 3 speed at which juncture the ramjet would take over and the turbojet would be hidden in an enclosure.
Also develop combo jet/ramjet/scramjet in one engine or vehicle tech to cover the velocity range better.
I'd look into scaling up the Air Force's successful X-37b spaceplane, then go after scramjet supersonic combustion ramjet technology that would allow aircraft to reach speeds beyond Mach 12.