Siddhanta Almanac (Siddhanta Panchangamu)

...remain in the sky without any danger. The text notes how the gas chambers are housed.

...without any danger. Its upper part is covered with aluminum sheets joined by wires. To ensure the gas in the chamber does not change due to sunlight, rain, or snow, the chamber is covered with waxed cloth. This airship has a diameter of 450 feet and a length of 450 feet. To prevent the airship from tilting, there are long panels on both sides, like the fins of a fish. Two vertical panels are placed on a wire located on the lower horizontal panel, and they move like shutters. Furthermore, in the middle of the lower panel, there is a large rudder. With this rudder, the airship can move sideways between the two vertical panels.

Zeppelin's war airships are very strong and can carry the ammunition, explosives, and three cannons required for war, traveling at a speed of 60-70 miles per hour. They can reach heights of 10,000 to 11,000 feet. These airships can circle within 125 to 150 miles.

Moreover, a rigid airship carries three cannons, machinery to drop bombs, 135 pounds of ammunition, and wireless telegraphy equipment to receive messages from a radius of two hundred miles. From the gondola under the airship, one can take photographs and observe the positions of enemy troops. Some of these are for use on water.

...built with 8 panels on one side and 8 panels on the other, capable of landing. Such an airship...