How Do Ramjets Generate Thrust with a Hollow Tube Design?

  • Thread starter Thread starter Aeronautic Freek
  • Start date Start date
  • Tags Tags
    Thrust
AI Thread Summary
Ramjets operate by compressing incoming air through a constricted mouth, which raises the pressure inside the engine. This pressure acts as a barrier, preventing exhaust from escaping out both ends and directing it solely out the back. The design allows for thrust generation at high air speeds, essential for ramjet functionality. Without sufficient air pressure, the engine would fail to produce thrust effectively. Thus, the compression of incoming air is crucial for the operation of ramjets.
Aeronautic Freek
Messages
121
Reaction score
7
tn_Normal shock front 1024 C.jpg


against what pressure produce thrust in ramjet if it is just hollow tube?
 
Physics news on Phys.org
Ramjets can only operate at relatively high air speeds. The incoming air is compressed by a constricted mouth. Without that pressure, there is nothing to stop the exhaust from going out both ends.

So the short answer to your question is: the incoming air is compressed, raising the pressure, and acts as a barrier for the exhaust, causing it to only vent aft.

1594411851349.png
 
  • Like
Likes Lnewqban

Thread 'Space Stuff and Launch Info'

Due to the constant never ending supply of "cool stuff" happening in Aerospace these days I'm creating this thread to consolidate posts every time something new comes along. Please feel free to add random information if its relevant. So to start things off here is the SpaceX Dragon launch coming up shortly, I'll be following up afterwards to see how it all goes. :smile: https://blogs.nasa.gov/spacex/
View full post »

Similar threads

Rocket thrust equation in under-expanded nozzle
Replies
2
Views
4K
Ramjet artillery shell of a big size
Replies
35
Views
7K
A jet engine's shaft is neutral in the direction of thrust?
Replies
21
Views
3K
Optimizing Thrust and Operation Time for a CO2-Powered Rocket Torpedo Design
Replies
7
Views
3K
Bi-propellant Liquid Fuel Engine Pressures Before Thrust Chamber
Replies
2
Views
3K
Understanding High Thrust of Vacuum Rocket Engines
Replies
2
Views
3K
Propeller thrust with backwards air flow
Replies
3
Views
2K
Do surfaces ahead of propellers decrease thrust?
Replies
9
Views
3K
Help With Understanding Thrust Calculations (rifle muzzle brake)
Replies
1
Views
2K
Momentum Thrust of an Over-Expanded Rocket Nozzle
Replies
1
Views
2K

Hot Threads

Recent Insights

Back
Top