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Search: Posts Made By: Keith.Williams.
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Forum: Tech Log
6th Jan 2004, 02:00
Replies: 57
Views: 10,436
Posted By Keith.Williams.

You are correct in saying that ram effect is...

You are correct in saying that ram effect is proportional to TAS squared. This is because it is the dynamic pressure that is increasing static pressure in the intake. this in turn is what is...
Forum: Tech Log
1st Jan 2004, 02:45
Replies: 57
Views: 10,436
Posted By Keith.Williams.

The copy of the Rolls Royce book "The Jet Engine"...

The copy of the Rolls Royce book "The Jet Engine" that I have here at home is a 1973 version. I examined it for an ISBN number but it (my old copy) does not have one. You can certainly get it from...
Forum: Tech Log
27th Dec 2003, 02:00
Replies: 57
Views: 10,436
Posted By Keith.Williams.

I think that as with most things. it is a bit...

I think that as with most things. it is a bit more complicated than that!

You are correct in saying that mass flow is equal to compressor inlet area x density x inlet air velocity. But inlet air...
Forum: Tech Log
20th Dec 2003, 02:02
Replies: 57
Views: 10,436
Posted By Keith.Williams.

Hello again Hawk, I think that the problem...

Hello again Hawk,

I think that the problem might lie in the way that you are interpreting your 731 thrust graph.

If the graph is just for changes in thrust against changes in TAS, without...
Forum: Tech Log
13th Dec 2003, 21:28
Replies: 57
Views: 10,436
Posted By Keith.Williams.

This is one of those really infuriating...

This is one of those really infuriating problems......each time I think that I have solved it, I discover a fault in my argument. But I think that we can solve it if we first restate it to take out...
Forum: Tech Log
6th Dec 2003, 18:17
Replies: 57
Views: 10,436
Posted By Keith.Williams.

Bookworm, If we hold pressure altitude and...

Bookworm,

If we hold pressure altitude and temperature constant then the relationship between CAS and TAS is also constant. Under these circumstances it is true to say that power required is...
Forum: Tech Log
6th Dec 2003, 02:21
Replies: 57
Views: 10,436
Posted By Keith.Williams.

Hawk, I think that the fault in your...

Hawk,

I think that the fault in your argument lies in the fact that the thrust does not remain unchanged as you climb. Thrust is proportional to mass airflow multiplied by the acceleration the...
Forum: Tech Log
5th Dec 2003, 02:39
Replies: 57
Views: 10,436
Posted By Keith.Williams.

The only set of charts to which I have regular...

The only set of charts to which I have regular access are those in the CAP 698 which is published by the CAA for use in JAR ATPL exams. These are reputedly based on a version of the 737, but I know...
Forum: Tech Log
4th Dec 2003, 02:02
Replies: 57
Views: 10,436
Posted By Keith.Williams.

The fact that flat rating gives constant STATIC...

The fact that flat rating gives constant STATIC thrust over a range of ambient temperatures, does not mean that it gives the same thrust at each possible value of CAS. This is because the thrust is...
Showing results 1 to 9 of 9


 
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