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Forum: Tech Log

30th Sep 2012, 14:18

Replies: 75

Griffon vs Merlin rotation.

Views: 43,734

Posted By barit1

"I thought so little, they rewarded me by...

"I thought so little, they rewarded me
by making me the ruler of the Queen's naveee!"
- Sir William Schwenck Gilbert

Forum: Tech Log

8th May 2011, 15:22

Replies: 75

Griffon vs Merlin rotation.

Views: 43,734

Posted By barit1

As has been discussed on other threads, the...

As has been discussed on other threads, the motivation to use contra-rotating prop (coaxial shafts) is to INCREASE PROPULSION EFFICIENCY. A conventional prop creates a rotating slipstream vortex,...

Forum: Tech Log

5th May 2011, 19:59

Replies: 75

Griffon vs Merlin rotation.

Views: 43,734

Posted By barit1

Another aspect to Allisons reversing rotation: I...

Another aspect to Allisons reversing rotation: I believe they were designed, among other things, for dirigible use; and they could be shut down and reverse-started in flight for docking operations.
...

Forum: Tech Log

5th May 2011, 18:35

Replies: 75

Griffon vs Merlin rotation.

Views: 43,734

Posted By barit1

Smilin_Ed: Don't think so - it was the...

Smilin_Ed:

Don't think so - it was the crankshaft that was reversible. (I had thought it was the camshafts that reversed, but was later advised differently)

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