This is a forum for discussion of topics relating to the Dreadnought era, prior to the ascendency of naval aviation. We will be discussing history, ship design, and naval wargaming.
Saturday, January 15, 2005
I just did a comparison with SpringSharp
I just did my first comparison between Springsharp and my Warship General Design program. I wondered if this would be the case, and so it proved to be. With my program, for a given SHP, the speed was somewhat lower. I could not get a good comparison, because my program was calculating a lower normal displacement, so at the same displacement, there would have been more of a differnce. I calculated that the Ger/CB/1915A Design Study E1 would be able to make 36.346 knots at 63,151.9 tons displacement. That is with a SHP of 426,433. With Springsharp, this design could make 37 knots, with the same SHP, but at a greater displacement: 65,891 tons normal. We had almost the same range at the normal load. I calculated a range of 7,513.54 nm, while I had specified 7,500 nm in Springsharp. They were almost exactly the same. My design got better fuel efficiency, seemingly, although I used Springsharp's figure for my deep load fuel capacity: 7,481 tons. One big issue is that I calculated that too much volume would be required at the SHP/ton of machinery used by Springsharp (26.4) for the size of the ship. I would have assumed a lighter weight, higher output machinery, if I had done this independently (I hadn't run this ship before). I would have used something like 40 SHP/ton, and assumed that the machinery would have been less reliable.
No comments:
Post a Comment