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Forum: Tech Log
21st Apr 2013, 13:22
Replies: 148
Views: 115,122
Posted By Mr Optimistic

I think some ealier posts had the view that the...

I think some ealier posts had the view that the engine could be deconstructed into individual parts which could be characterised separately with the total engine being the sum of the parts.
Forum: Tech Log
25th Nov 2012, 16:08
Replies: 148
Views: 115,122
Posted By Mr Optimistic

Gornaut states that momentum is being transferred...

Gornaut states that momentum is being transferred from the supersonic incoming air flow to the engine

That would be drag as something has to slow the air down. This thread caused endless...
Forum: Tech Log
3rd Nov 2010, 13:49
Replies: 148
Views: 115,122
Posted By Mr Optimistic

M2dude

Magnificent stuff. Thanks.
Forum: Tech Log
13th Sep 2010, 19:52
Replies: 148
Views: 115,122
Posted By Mr Optimistic

I suspect nothing as elegant as Concorde will ever fly again

...well, perhaps one of these super light things to some extent but not with the combination of elegance and power.
Forum: Tech Log
13th Sep 2010, 19:38
Replies: 148
Views: 115,122
Posted By Mr Optimistic

BA

Indeed I do.
Forum: Tech Log
13th Sep 2010, 11:24
Replies: 148
Views: 115,122
Posted By Mr Optimistic

I agree

The issue is one of terminology but not semantics. The idea of thrust from the intake leaves just one small step to the intake sourcing thrust and then to why do we need the hot and heavy thing just...
Forum: Tech Log
12th Sep 2010, 23:53
Replies: 148
Views: 115,122
Posted By Mr Optimistic

CJ

Fair try but it still seems a bit perpetual motion machine to me.

In the frame of reference where the engine is stationary, work is done on the entering gas to slow and compress it. The pressure...
Forum: Tech Log
12th Sep 2010, 23:32
Replies: 148
Views: 115,122
Posted By Mr Optimistic

M2Dude

No-one would dare take that kind of risk now under fixed price rules. Had forgotten about TTL. Of course you would need 10^-9 now, don't suppose safety was quite the game it was now.
Forum: Tech Log
12th Sep 2010, 11:48
Replies: 148
Views: 115,122
Posted By Mr Optimistic

And to think these were all done without the...

And to think these were all done without the modern CFD codes
Forum: Tech Log
11th Sep 2010, 18:33
Replies: 148
Views: 115,122
Posted By Mr Optimistic

I think the problem is the word 'thrust'

On the wetted surface theory elucidated above, a simple unknotted toy balloon will be thrust about the place and this is calculable, in theory, by looking at the unbalanced pressure acting on the...
Forum: Tech Log
10th Sep 2010, 21:55
Replies: 148
Views: 115,122
Posted By Mr Optimistic

last year

yep, there was a huge thread on this last year focused on ice cones I believe. Switch off the fuel and see how much thrust the intake gives.
Showing results 1 to 11 of 11


 
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