How Much Fuel Does a Spacecraft Use to Generate 1.5 MN Thrust?

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    Fuel Rate
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Homework Help Overview

The discussion revolves around calculating the fuel consumption rate of a spacecraft based on its thrust and exhaust speed. The specific values provided are a thrust of 1.5 MN and an exhaust speed of 2.5 km/s.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants are exploring how to begin the problem, questioning what the given values imply about the fuel usage. There are inquiries about potentially useful calculations that could be derived from the provided information.

Discussion Status

The conversation is ongoing, with some participants seeking clarification on how to approach the problem. Guidance has been offered regarding the necessity to engage with the problem before seeking help.

Contextual Notes

One participant expresses uncertainty about how to start, indicating a possible struggle with understanding the relationship between thrust and fuel consumption. The forum rules emphasize the importance of attempting the problem first.

matramlee
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A spacecraft ’s motors provide a total thrust of 1.5 MN. If the exhaust speed is 2.5 km/s, at what rate is fuel being used?

Homework Statement


Thrust = 1.5 MN
Exhaust speed = 2.5 km/s

rate fuel being used = ?
 
Last edited:
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How do you think you should start?
What does the information you're given (thrust and velocity) tell you about the situation?
Are there any helpful values you might be able to calculate?
 
i don noe.. pls help me..
 
That's what I'm trying to do. The PF Forum rules require that you try to start the problem. What are you having trouble understanding?
 

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