Huh? I thought you checked all the competitions. :D In that case check this old bionic Manta. It has an operational time of 24 hours. This...
That's alright. Btw. have you checked the iBotics Stingray Project? It's interesting that they use top intakes only.
Fuel is probably the most important issue aside from medical supply. I guess the doctor could stay overnight in the village and then move on to...
Since I don't think the uuv will need to be that speedy, a gliding form might offer higher energy savings. Also requirements for subs and uuv are...
Why it's not used for subs? Well, it seems simple to me to answer. 1. subs are big, a geodesic structure will be complicated, difficult to put...
Controlling isn't that of a problem, but it's range and sensor. The russians use drag to control it. It got to carry fuel, air (or exhaust) for...
Nice, I like it. Reminds me of the seaquest series. Say, would it be viable to consider a waterjet system with ducts up front? Also will it have...
To simplify we can say the center of the force is at the center of the sail. Using the moment arm formula: t= r * F In this case r=B/2 happens...
Congrats. So do we get to see a race? :)
Well, it's a great idea, but the question is how much equipment does it have to carry and how much space you need to take care of patients. I...
prismatic coefficient Cp: no change Cp extreme: up to 5% less
If the body stays roughly the same while the bow is exchanged, then depending on the L/D ratio there could be less drag. But if it's a short body...
To simplify: The sail calculations only need wind force and lift force on it. At the boom base there is always a torque force down due to...
Please provide a picture explaining the setup. Also provide any info, and then elaborate your question as detailed as possible. This may seem...
I made rv up. :lol: since I converted it to your particular case. Cos(alpha) * rv = velocity vector of the river v is relative to the water so...
Well, having a horse as regenerative food and power source is new. :lol:
We have many skeptics here so until you come clear help comes slow. This is physics 101 you could just have asked in a physics forum. Anyway,...
This thread should be merged to the other one. Seems more fun. <3
Very nice! To answer to the question of why it doesn't work for this particular design is because of the flatness of the 'boat'. This results...
Maybe, but try to have hot water in them. On the other side you can use a metallic tank to boil water in a fire. ;) Anyway, since everyone has to...