Aspect ratio has a large effect on the lift vs AoA curve. Maximum lift isn't significantly effected, but the stall angle and the required...
Thanks, graphs are always good.
The pressure at the actual water surface will be constant at atmospheric pressure, but it occurs at different levels on either side of the rudder...
I don't follow why you assume that pressure difference falls to zero at the nominal water surface? The models presented here by Leo and others...
Great stuff, thanks Leo. I wasn't expecting a simple answer, but I couldn't see how the water surface would have no effect.
Good points. What I'm digging at is that a rudder underneath a hull acts like it's twice as long as it actually is (in terms of Cdi, Cl vs AoA...
Ad hoc, I think you've missed my point. Simplifying hugely, the drag created to produced the required lift increases as the AR decreases. If I...
I've read this before, but it never seems to come with a theoretical or experimental basis, which is what I was hoping for here. The air/water...
The effective aspect ratio of under-hull rudders is usually assumed to be twice the geometric aspect ratio due to the presence of the hull as a...
Regarding technical specifics, I would think: -double glaze the evaporator to reduce heat loss and condensation on the solar collector. -use a...
I seem to come across as overly negative in my last. I'm not saying solar stills are a bad idea, rather the opposite. However we need to start...
CDK, I'm not sure how the de-humidifier is relevant, as it doesn't include the energy input to evaporate the water in the first place. True, if...
I've always thought this was an interesting idea, because the high power consumption and fragile membranes have been putting me off RO. However...
Bounty A number of people have placed the fault with the Bounty's captain, but does anyone have details of exactly why it sank? Based on very...
Mike, re-reading your post I see you are only referring to RAO, in which case I agree that the two catamarans are different. However in large...
Peter, the people who do the scale modelling put a lot of time and effort in to making sure that they correctly scale the model parameters they...
Hi Mike, I'm curious why you feel lowering VCG and and increasing reserve buoyancy have such a large beneficial effect on catamaran stability?...
I don't see why not, but I'm no expert. The loads on any "skirt" used for blocking could be huge (waves as well as wind) but a practical solution...
If the rig is intact then it should be stable at ~100° of heel. With the rig completely gone and all hatches open on the pod then it will rest on...
Interesting thought. The extra weight usually found in the stern would help too. As others have pointed out when the wind gets strong enough...
