Jet propulsion Definition and 12 Threads

Here's a really complex & difficult question... Satellites orbit Earth in the upper thermosphere. Could a jet engine (not a rocket) produce enough thrust to move a small craft? The reason I'm asking is because it most certainly would produce "some" thrust in low orbit. The atmosphere extends...

I really can't seem to wrap my head around why the specific impulse on a rocket is so much lower than that on a jet. I know a jet engine has a larger supply of oxygen, but I don't see why that has such a huge effect. I also know exhaust velocity plays a large part, but I would have thought that...

Any recommendations for books on Propulsion Systems that arent $100+?

Homework Statement How does change the total energy of the rocket during its motion inin a uniform gravitational field? 2. The attempt at a solution My idea is to write the law of conservation of energy systems - "rocket- gases" ##\frac{dE_{total}}{dt}=0## But get very cumbersome terms , the...

Several species, including the squid, cuttlefish, dragonfly fish and many microscopic organisms, move themselves around by a kind of jet propulsion. In each case the animal absorbs fluid in a body cavity and expels it through an orifice by contracting the cavity. If a squid has a mass Ms when its...

hi Im currently studying aeronautical engineering at college and needed some ideas for projects and whether they would be pliable or not My current idea: A replica of hero's engine to show the basic principles of jet propulsion but to spice the idea up a little bit, i was thinking about...

Let's suppose one wanted to move a wheeled, land-based vehicle. Generally, which would be more efficient, and why? Using a jet of air straight out the back (like the Batmobile seen in the 1989 Batman movie) or absorbing most of jet's thrust through a turbine and delivering that force to the...

Hi, my mate has just left school and wants a career in jet propulsion or aircraft structure, he lives in plymouth (uk) and don't have any A to C grades... what would you recommend his best route is? and what decent colleges are there that specialize in this sort of thing?

i was reading about pulse jets and ram jets as part of my course on jet propulsion. all i was told was that they are aero-thermo-dynamic-ducts. couldn't understand what they mean. checked google, but the articles i got were vague. could someone explain what aero-thermo-dynamic-ducts are?

In the general thrust equation in order for a jet engine, either turbojet, ramjet, or scramjet, to produce net thrust the speed of the exiting exhaust has to be greater than the incoming speed of the air flow. Then the net thrust is the mass exhaust rate times exhaust speed minus the air mass...

Does anyone know of some decent books for Gas Turbines/ Jet Propulsion? Thanks

anyone know any theories being used for fluid dynamics? any formulas? I aint no physicist, I am just curious. Are there any developments today involving jet propulsion by going faster with only half the fuel? if that sounds right. any help would be appreciated