# Homework Help: Force of a jet engine

1. Feb 5, 2017

### Maximilian Popelier

Hi
Does someone know realistic numbers that i can put in this equasion so i can calculate the force?
Ty maximilian Popelier

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2. Feb 5, 2017

### Staff: Mentor

lucht = air
brandstof = gasoline
uitlaat = exhaust

But what is vluigtuig?

3. Feb 5, 2017

### Maximilian Popelier

plane the speed of the plane

4. Feb 5, 2017

### Staff: Mentor

ach Flugzeug ... of course ... should have recognized ...

5. Feb 5, 2017

### Staff: Mentor

So to make it easier to read:
$$F = m \cdot \frac{d \vec{v}(t)}{dt} = m \cdot \frac{v_2-v_1}{\Delta t}= \dot m v_2 - \dot m v_1=((m_{air}+m_{gas})\cdot v_{exhaust})-m_{air}v_{plane}$$
and you're looking for realistic figures for the various variables? Have you tried to find some information directly on the manufacturers' websites, i.e. RR and GE?

6. Feb 5, 2017

### Maximilian Popelier

No, should i send a mail?

7. Feb 5, 2017

### Staff: Mentor

At least, it might be worth an attempt. However, I thought about looking for some technical specifications of their products. Maybe they are available online. Or on some Wikipedia pages about jet engines. (If you swap between different languages on Wiki, you improve your odds, as these pages aren't 1:1 translations. At least our many different languages here are good for something. )

Or google "technical data jet engine". Just some ideas.