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Search: Posts Made By: Dick Whittingham
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Forum: Tech Log
28th Mar 2007, 20:15
Replies: 36
Views: 7,026
Posted By Dick Whittingham

As a seeker after knowledge, let me put this to...

As a seeker after knowledge, let me put this to you:

Considering the airflow through the prop as in a tube, the prop generates thrust by accelerating the air in the direction of flight. The only...
Forum: Tech Log
18th Mar 2007, 19:47
Replies: 36
Views: 7,026
Posted By Dick Whittingham

Tip speed is limiting because you cannot slow...

Tip speed is limiting because you cannot slow down the prop below a reasonable RPM. Or you could, but it is called feathering.

Dick W
Forum: Tech Log
15th Mar 2007, 18:07
Replies: 36
Views: 7,026
Posted By Dick Whittingham

If contra-props are so efficient then why didn't...

If contra-props are so efficient then why didn't everyone use them? I would need some convincing. IMHO they are chosen because for a given diameter they can absorb more engine horsepower (EHP). Prop...
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