97 Anna's Gift
That's ......."
"It seems that there are no shortcuts......
"Let's learn, everyone, and you have to work hard to learn ...... when you cross over."
Seeing that her answer made all the people who asked the question stop, Anna looked down and flipped through the stack of papers in her hand again, and her tone became a little calmer:
"Hmm...... A while ago on the Pride, Captain Gu and First Officer Li chatted with me and said that they looked at this sailboat very familiarly, but they just couldn't say where the familiarity was, I can tell everyone here now that the blueprint of this ship is also called Pride, it is a famous sailing ship, although the age of the ship is much older than Sun Laodu, but don't worry about this problem, the Pride has rejuvenated after the magic change of this engineer, to be honest, compared with Nicole, I think, This hybrid sailboat is your real crossing weapon, and it is the most suitable ship for the social and economic development conditions of that era, which is a crossing gift to you after the engineer's painstaking efforts to build it!
In the process of renovating this ship, it contains my own innovative design ideas and many useful attempts, and after a long sea trial, it can be safely said that my design has been very successful......"
"It's just a little small......"
Someone in the room whispered.
"It wasn't small in those days!"
Anna replied immediately, and then took out a sketch of the design and showed it to everyone, and the beautiful and neat three views on the paper immediately attracted everyone's attention:
"You see, this is a hybrid schooner with a full load displacement of 1,150 tons, a total length of 63 meters, a width of 14.6 meters, an unladen draft of 1.5 meters, a full load draft of 3.6 meters, and a maximum of 3.5 meters on the waterline, the hull and layout follow the principle of flat deck design, the superstructure is in the middle and rear of the hull, and the power system is in the front and middle of the hull.
Note that I have improved the original hybrid system of sail and external combustion turbine, greatly simplified the sails, added wing sails, and the power engine is three 50 kilowatt heavy Stirling engines.
One of the most distinctive features is that the boat has no propellers, it relies on an air pump to compress air for underwater jetting to drive the hull forward, and there is also a side steering jet, so the ship is very flexible in turning on the sea, how about it? Pretty cool, huh?!
I'll tell you, your world, propellers or something, too backward and uncreative! You can completely abandon this design in the future. ”
"Uncle Anna! I have a question! ”
Huang Hai, a former coal mine excavator maintenance technician and a college student majoring in mechanical engineering, raised his hand in the audience to ask a question.
"O Yellow Sea, please speak!"
Naturally, Anna raised her hand and made a standard gesture when the spokesperson of the Ministry of Foreign Affairs of the Celestial Empire answered reporters' questions professionally and domineeringly.
"Well, as far as I know, the jet power unit using a high-pressure air tank and air compressor system has been tried before, but because of the power system power, compressor performance and the capacity of the air tank, the endurance of jet propulsion is very insufficient compared to the propeller, how do you always solve this problem?"
"Uh, well, I have a level of professional evaluation of the Yellow Sea, uh, yes, of course, you can't use this injection system for a long time, I have tested, from the engine to preheat to the gas tank to reach enough pressure, it takes at least half an hour, and then under the premise that the engine continues to run and the compressor continuously supplies compressed air to the gas tank, it can maintain a full-speed jet cruise for three hours, and if the surge is also suitable, the speed can exceed sixteen knots!
Of course, if the speed is limited to about 12 knots, it can maintain an eight-hour continuous voyage.
In addition, pure mechanical power can last 18 to 20 hours at the average speed of a sailing ship of 300 years ago, which is 4 to 6 knots, without wind and waves......"
"Oh, and then?"
Someone in the audience asked.
"Then the pressure will gradually decrease until the jet power is gone!"
Anna responded.
"Then the injection power had to be turned off and the pressurization had to be refilled...... Half an hour later, it was back again! ”
After Huang Hai helped Anna add the second half of the sentence, he nodded to show that he understood.
"In fact, in practice, I let the jet power last all day, as long as I don't open the spout widely, so that the pressurization speed is basically the same as the jet speed, I can use this power for a long time without relying on the sail...... Of course, speed was sacrificed, but even then, I used to keep the average speed at about four or five knots......"
Anna further explained.
"Oh....."
"That's it!"
"Not bad, actually!"
"Jet power can be used in naval battles, and you don't need it in peacetime!"
"Well, it's okay to use it when there's no wind......
"It seems to be quite fast to stop the ship for half an hour and be able to restart again."
"The prerequisite is to bring enough fuel!"
"The external combustion engine can burn oil and coal, and it can also burn wood, so it's not a big problem, right?"
"Don't forget the sails, we still have to rely on the sails......"
"yes, yes, so hybrid!"
Through the above discussions, it can be seen that everyone agrees with Anna's design.
"Oh, and also, I've personally tested that the pure sail power of this ship can reach more than eighteen knots when downwind, which is about two knots faster than the maximum speed of the windless pure fuel power, but I want to tell you here that the economic speed of the Pride is ten knots, which is a little lower than that of the Nicole.
In addition, in terms of the transformation of the ship, I also refer to some design ideas of your time, as I have just said, the initial blueprint of this ship is the famous Baltimore brig Pride II, but after my large-scale changes, especially in terms of hull size and sails, this ship is somewhat unrecognizable compared with the original blueprint, so Gu Li Er is an expert and only looks familiar, but can't name it.
But strictly speaking, this should be an enlarged and enhanced version of the Baltimore schooner.
Let me tell you, I came to your time, and my favorite sailing ship is the Baltimore brig, I admit to being a bit selfish, because this is my favorite, I liked it when I first saw her, and that ship is simply a maritime artwork of mankind in this plane! ”
"No wonder I just look familiar, and sure enough, it's ......"
Gu Jin nodded secretly after listening to Anna's words, as a sailing professional, although Gu Jin's profession rarely comes into contact with sailing, his sailing expertise is not bad, after all, he has always been interested in sailing, and in his sailing career, he has also participated in sailing professional training, because one of his life ideals is to one day drive his own sailboat and take his wife and children to travel around the world. Therefore, he has a certain understanding of sailboats, and of course, he must also recharge himself in this area and further improve his level of sailing.
"Hey...... Suddenly I felt so much pressure on my body......"
Gu Jin was still thinking about his thoughts at this time, and someone around him had already asked Anna:
"Why, then, didn't you add a foremast to the crosssail? I remember that the Baltimore schooner had a crosssail? ”
The questioner was another navigator in this group, Li Sanduo, the first mate.
"To simplify the sail system! Considering that the vast majority of you don't have any sailing experience---- except for the two of you. Well, in addition, Zhu Beiguo and Xu Zhi have played sailing in your spare time, except reluctantly.
In fact, you yourself know very well that even if you two have a lot of sailing experience, you also lack experience in sailing, right? After all, none of you are wealthy enough to afford a large private sailboat to travel the world.
So, in a way, it's harder to sail a sailboat than a motorized boat, so even if you have some sailing experience, you'll need more hands-on training to drive such a large sailboat......"
Anna finally said to Gu Li, Li Zhuxu, and others.