«The Vimanika Shastra English translation by G.R. Josyer  This is the English translation of the Vimanika Shastra, which purports to be an ...»
p. 91 The Peetha The height of the peetha should be 80 feet. It should be 56 feet in length and breadth, 70 feet high on the north and south sides. The tip should be three-cornered. This is for shakuna vimaana.
Naalastambha or Hollow Mast:
At the bottom the mast should be of 35 feet diameter outside, and 30 feet inside. At the middle the mast should be of 25 feet diameter outside and 20 feet inside. Higher up it should be of 20 feet diameter outside and 15 feet diameter inside; The height of the mast should be 80 feet. It should be made of Raajaloha. In order to fix the mast in the peetha screw joint should be made. And in order to adjust the air-speed as required, 6 wheels should be inserted inside the mast.
Inside the mast at the height of 4 feet above the peetha, three wheels should be provided, of 15½ feet diameter, with holes. The wheels above and below should be fixed with bolts, and unmoving.
In order to revolve the middle wheel keys should be fixed outside on the mast, As there are holes in the wheels, as two wheels do not move, and as the middle wheel revolves in a group with the other two wheels, movement of air is, allowed or stopped by the turning of the key outside.
Similarly at the height of 44 feet above the peetha three wheels corresponding to those below should be fixed and operated similarly.
The window dome should be of 15½ feet outside circumference. Its inside should be five feet wide and it should be 2 feet high. It should be fixed on the top of the mast.
A sun crystal 7 feet round, and 2 feet wide and 2 feet in height should be fixed so as to crown the window dome.
10 feet above the bottom peetha, on a floor-board 3 inches thick, three floors or tiers should be built, each 14 feet high, with 3 inch p. 92 floor-boards, the upper two floors being supported by pillars fixed at 10 feet intervals with screw joints and strong bolts. In the four corners 4 heating yantras should be fixed, 10 feet in circumference and 8 feet high. On the ground floor along the supporting pillars accommodation for passengers should be provided in the form of individual boxes.
On the second floor booths should be constructed to accommodate the anga-yantras, or the various mechanisms recommended for the safety of the vimaana. It should be 60 feet wide and 14 feet high with 3 inch thick ceiling board.
The third floor should be 40 feet wide and 14 feet high.
The partitioning boxes for passengers as well as the booths of the various machines should be divided off by railings starting from the hollow mast to the side walls in all the four directions.
Beneath the ground-floor board a 7 feet high cellar should be constructed. In it the several necessary yantras should be located. In the centre is the foot of the hollow mast. On the four directions from it 4 air pumping machines should be fixed. In order to stimulate them 4 steam engines also should be installed. On the two sides of the vimaana two air expelling machines, and an air heater machine, and 2 machines to keep the heater supplied with air from outside, should be erected.
In order to enable the wings on either side to spread and flap, proper hinges and keys should be provided for, safely fixing them to the sides of the vimaana, and for enabling them to fold and open easily.
The revolving tractor blades in the front should be duly fixed to the heating engine with rods so that they could dispel the wind in front and facilitate the passage of the vimaana.
The wings are two, one on each side, very strongly fixed to the vimaana with bolts and hinges.
Each wing should be fixed in a 11 foot scabbard up to 20 feet length, where it would be 10 feet wide, widening further up to 40 feet at the end of its 60 feet length, besides its. first 20 feet of scabbard length.
The tail should be 20 feet long, and 3½ feet wide at the start, and 20 feet wide at the end.
The air-blower and heater:
The length of the air-blower should be 15 feet, and width 3 feet. The naalaas or pipes should be 3 feet wide, and their outer circumference should be 4 feet. The rods and hinges and other equipment should be suitably prepared.
The vaatapaa yantra or air blower should be 12 feet long and 9½ feet wide. Inside it should be covered with circling wires. A pipe should be fixed inside, for air flow. By the hot oil fumes from the heated tank, the air becomes heated and should be passed into the owshmya yantra or heater, while the cold air from outside should also be let in. Tubes and fixings should be provided in the yantra. In order to emit the fumes of the oil flames to the outside, a 6 inches pipe should be fixed from the yantra to the foot of the mast. Air blowers should be installed with 10 feet wheels to pump in fresh cold air from outside.
To the east of the air machine should be placed a light burner in order to aid combustion of the oil.
An electric generator provided with switches should light the burner. When the light is off the oil should be kept duly sealed. A rope should be tied to the tail joint, for the pilot to manipulate the fluttering of the tail to help the ascent or descent of the vimaana. Similarly ropes should be tied to the hinges of the two wings, and passed to the pilot like reins, so that he might spread them out or close them as needed.
Ten feet beneath the passenger floor of the vimaana, to a height of 2½ feet from the bottom plate there should be a cellar-like enclosure. The bottom of the vaatanaala mast should be fixed in its centre with firm screw joints. In this cellar should be located two oil tanks 15 feet by 9½ feet by 4 feet, with water jackets.
Four bellows of 15 feet by 2½ feet by 6½ feet, should be provided for storing the air pumped in by the air-blowers, and letting it out as required.
And underneath, on all the four sides wheels of 7 feet circumference should be fixed for the movement of the vimaana on the ground.
Next Sundara vimaana will be described. It has got 8 constituent parts.
First peetha or ground plate, smoke chimney, 5 gas-engines, bhujya metal pipe, wind blower, electricity generator, and four-faced heater, and vimaana nirnaya, or outer cover.
The Peetha or ground plate:
It should be made of Raajaloha metal only. It should be square or round, and of 100 feet in circumference, or any other desired size. It should be 8 feet thick. Seven times the peetha has to be heated with manchuka or madder root oil. Then spots should be marked in it at 10 feet distance from each other, totalling 24. The size of each kendra or centre is 15 feet. In the centre a dhooma-prasaarana or fume distributing naala or pipe 12 feet high should be erected.
Naalastambha, hollow mast:
The naalastambha should be 56 feet high, and 4 feet in diametre. For storing gas, at its base, a 8 feet long, circular, and 4 feet high vessel should be provided. A six feet size water vessel should be arranged. A 4 feet size oil tank should be fixed at its centre. At its foot an electric storing crystal of 1 foot size should be fixed with necessary hinges and keys.
The vessel should be filled with 12 parts of dhoomanjana oil, and 20 parts of shukatundika or bignonia Indica? (egg-plant?) oil, and 9 parts of kulakee or red-arsenic oil. To conduct electricity, two wires should be passed through the pipe and fixed to the crystal. In the middle of the naalastambha or mast, for the smoke fumes to be restrained or speeded out, triple wheels with holes should be fixed. In order to work the wheels from outside, two right turning and left turning wheels p. 95 should be attached outside the pole, and connected to the wheels inside. Three wires should be drawn inside the naala and fixed at the foot, the middle, and at the top.
Because it ejects smoke fumes with speed it is called Dhoomodgama yantra.
Hima samvardhaka, soma, and sundaala, in the proportion of 32, 25, and 38, should be filled in pipe crucible, placed in chakra-mukha furnace, and with the help of ajaamukha bellows heated to 712 degrees and properly churned. It will yield excellent dhooma-garbha alloy. With that alloy the dhoomodgama yantra should be constructed.
Underneath the centre of the 15 feet long peetha, for the control of the gas fumes a 10 feet high pipe with right revolving wheel should be fixed. On its 2 sides, to south and north, 2 water steam pipes should be erected. At the foot of the 2 pipes 4 feet long 3 feet high pots should be formed for containing the fumes. Two pipes shaped like goblets, 1 foot by 8 feet by 3 feet, should be fixed at the top of the fume container. A water vessel at its foot, and an oil-vessel at its centre, and in front of it the switches of the electric ray crystals, as in the dhooma prasaarana naala stambha.
On either side of the heat tube, two water jackets should be placed. A pipe with wires should be taken from the electric generator and connected to the hinges of the crystals. Electric current of 80 linkas should be passed to the crystals, whose motion will cause friction and generate heat of 100 degrees (kakshyas). Thereby the oil in the vessel will get heated and boil and emit fumes.
The electric power should then be passed through the smoke pipe between the two water jackets.
By this the water will be converted into hot steam. The oil fumes should be filled in the oil fume pipe and the steam in the steam pipe. Then by operating the switches, both the fumes will fly up at 500 degree temperature. The switches should restrain the fumes or pump them out as needed. 40 such yantras should be prepared and should be fixed on the peetha in groups on p. 96 the four sides. Then connected with the bases of the dhooma-naalas, sundaalas or elephant trunks, one foot wide and 12 feet high should be erected on the four sides, to enable the vimaana to fly with speed.
Sundaala is described by Lallachaarya:
The sundaala should be installed. for using the oil fumes and steam fumes for the motion of the vimaana. There are. varieties of ksheera vrikshaas or milk-trees according to shaastraas. Vata or banyans, manjoosha or madder root, maatanga or citron?, panchashaakhee (five branched), shikhaavalee (crested), taamra sheershnee (copper-crested), brihatkumbhee (big bellied), mahishee, ksheeravallaree, shona parnee (crimson-leaved), vajramukhee, and ksheerinee (milky).
From these the ooze or milk should be collected, and in the proportion of 3, 5, 7, 10, 11, 8, 7, 4, 7, 30, 12, filled in a vessel. Then granthi metal, naaga or lead, vajra, bambhaarika, vynateya, kanduru, kudapa, and kundalotpala, these in equal parts should be filled in the vessel in equal proportion to the milk contents, and boiled with 92 degree heat. Then the molten liquid should be filled in the milk-cloth machine, and churned. When cooled and put through the levelling machine, it will yield a strong, soft, cool, heat proof, and uncuttable ash-coloured cloth sheet.
This cloth should be boiled in rouhinee taila or oil of black hellebore for 3 yaamaas or 9 hours, and then washed with water. Then it should be boiled in atasee or linseed oil as before. Then it should be kept in ajaa-mootra or goat's urine for one day and kept in the sun. Then it should be dried and painted with kanakaanjana paint and dried, Then the cloth will glow with a golden hue. With this cloth should be made the shundaala or elephant trunk, 12 feet high, 1 foot round, and with pipelike opening inside.
Two mechanisms for rolling it and unrolling it should be properly attached to it. By the rolling switch the shundaala will coil round like a snake and remain on the floor. By the unrolling switch it will uncoil and stand erect like a raised arm. From the fume generating yantra connecting links to the shundaala should be provided for the fumes to pass through it to the outside air. And to attract outside air into the sundaala a pump-like arrangement should be provided as in an inflator.
p. 97 Three switches should be provided as in the water tapping yantra. By revolution of its wheel the fumes will go out through the shundaala and 82 linka of fresh air will come in. The direction in which the fumes will emerge from the shundaala will be the direction of the course of the vimaana.
The 3 wheels in the shundaala will cause the vimaana to wheel around or make ascent, or to drop height.
At the foot of each dhoomodgama yantra 2 shundaalas should be duly fixed. And on the 4 sides of the dhoomaprasaarana-naala-stambha 4 shundaalas should be erected.
In order to protect against the intense heat from fire and sun inside and outside the vimaana, it should be provided a covering made of the 6th type of Ooshmapaa loha or heat-proof metal. At the top and bottom and on the sides keys should be provided for the movement of the fumes. 40 such dhoomodgama yantras should be properly fixed in the selected spots of the peetha with screw fittings. The vimaana will be enabled to fly smoothly by so doing.
Says Yantra Sarvasva:
There are 32 kinds of yantras for generating electricity, such as by friction, by heating, by waterfall, by combination, by solar rays, etc. Out of these, saamyojaka or production by combination is the
one most suitable for vimaanas. Its manufacture is explained by Sage Agastya in Shaktitantra:
The peetha or foot-plate should be made of saamyojaka metal, 35 feet in diametre. 5 spots should be marked in it in a circle, 5 feet in diametre, with a spot in the centre. Vessels should be prepared for each kendra, 4 feet wide, 2 feet high, shaped like a pot. On each a cylindrical pipe 1 foot wide and 1 foot high, should be fixed. The top of the cylinder should be 4 feet wide and round.