How Does Thrust Force Work?

In summary, thrust is a force that propels an object forward and is usually desirable. This is achieved through Newton's third law, where the exhaust from an object creates an equal and opposite force. In terms of aerodynamics, lift is the sideways force that keeps an object in the air and is also desirable. To calculate thrust force, one can refer to the formulas provided on the Wiki page, but it is important to verify information as it may not always be accurate.
  • #1
raw_653
6
0
What is thrust??

can someone please give me a brief explanation about the thrust force?
 
Physics news on Phys.org
  • #2


In short, it is Newton's third law. If you expel mass from, say, a rocket nozzle, the exhaust has a certain momentum. The rocket feels a force that is equal and opposite this.
 
  • Like
Likes Cliff Hanley
  • #3


Thrust is the forward force that impels you to go faster or to keep going in the intended direction. Thrust is usually desireable.

Drag is the backward force that slows you down. Drag is usually undesireable.

If you are talking aerodynamics then lift is the crosswise force that keeps you in the air. Lift is usually desireable.

You need thrust to offset drag so that you can have motion and lift.
 
  • #4


sorry for the late reply and thanks for your answers
 
  • #5


raw 653, Just book a commercial flight on a jetliner, and get yourself a window seat just behind the wing. This gives you a great view of the nozzles of the jet engines. You can imagine the "thrust" of the exhaust gasses during takeoff, for example. I promise you that you will understand (and feel) what is "thrust".
 
  • #6


i`ll try to do that next time :)
 
  • #7


how about calculating the Thrust force? how can you do it and what are the equations used?
 
  • #8


Google is our friend, and Wiki is, well, an extremely important and valuable encyclopedia that you find using Google. You should become intimate (yes, intimate)with both of them. One caution: sometimes Wiki has mistaken/wrong information: use it with care and verify everything you read there.

This Wiki page has all the formulas for calculating the thrust force:

http://en.wikipedia.org/wiki/Thrust

Cheers,
Bobbywhy
 

1. What is thrust force?

Thrust force is a type of force that is produced by an object or a system in motion. It is a forward-directed force that opposes the resistance or drag force. In simpler terms, it is the force that propels an object forward.

2. What are the factors that affect thrust force?

There are several factors that affect thrust force, such as the mass and velocity of the object, the design and shape of the object, and the medium through which the object is moving. The type of propulsion system used also plays a significant role in determining the amount of thrust force.

3. How is thrust force measured?

Thrust force is typically measured in newtons (N) or pounds (lbs). In order to measure thrust force accurately, the force must be measured over a specific period of time. This is known as the force-time integral and is measured in newton-seconds (N·s) or pound-seconds (lbs·s).

4. What is the relationship between thrust force and acceleration?

Thrust force and acceleration have a direct relationship. As the amount of thrust force increases, so does the acceleration of the object. This is because thrust force is the force that overcomes the object's inertia and allows it to accelerate.

5. How is thrust force used in real-world applications?

Thrust force is used in various real-world applications, such as in rocket propulsion, jet engines, and propellers. It is also used in the design of vehicles and aircraft to achieve efficient and effective movement. Additionally, thrust force is essential in understanding the principles of aerodynamics and fluid mechanics.

Similar threads

I What is the difference between thrust and thrust density?
    • Other Physics Topics
Replies
4
Views
3K
I Rocket-Jet Hybrid, Rocket + Ramjet
    • Other Physics Topics
Replies
4
Views
3K
B How can a glider or an airplane do a loop without thrust
    • Other Physics Topics
Replies
33
Views
4K
Rocket thrust equation in under-expanded nozzle
    • Aerospace Engineering
Replies
2
Views
2K
B Why does a stiff boat rudder produce forward thrust when pumped left to right?
    • Classical Physics
4
Replies
117
Views
5K
How to measure net force based on diagram
    • Other Physics Topics
Replies
3
Views
2K
Why is the thrust equation same under gravitational force?
    • Introductory Physics Homework Help
Replies
10
Views
667
Sci-fi engine thrust calculations
    • Science Fiction and Fantasy Media
2
Replies
37
Views
4K
Is a thrusting motion more powerful/deadly than a swinging one?
    • General Discussion
Replies
9
Views
261
B Buoyant Force: Pressure, Gravity & Upward Thrust
    • Other Physics Topics
Replies
34
Views
5K

Hot Threads

Recent Insights

Back
Top