The next is the rectangular kite, as shown in Fig. 67. This is a splendid kite of its kind and should have specific measurements. The two center pieces called the spines are 5/8"x5/8" the corner and cross-pieces 3/8"x3/8". The bands for cells are 21" wide by 18', with 1" additional for the seam. The edges should be hemmed as in previous kite. The framework should be all thoroly wired in every direction as shown by drawing, Fig. 68. Little wire turnbuckles such as are sold by firms carrying model aeroplane supplies might be used, and the stretch of the wires could be taken up from time to time. A well made kite will last a long time if it has good care. This particular construction is for large kites and they are not often made to fold, altho it is possible to make them so. Out of the box-kite has grown the aeroplane. Some good sizes for kites are:

Six-foot kite: - 6' long, 6' wide, 3' deep, 1'9" width of cell,

5/8"x5/8" corner-pieces, 2'6" between cells, 5/8"x5/8" spines. Nine-foot kite: - 9' long, 9' wide, 4' deep, 2'6" width of cell,

3/4"x3/4" corner-pieces, 4' between cells, l"xl" spines. Twelve-foot kite: - 12' long, 12' wide, 6' deep, 3'6" width of cell, 7/8"x7/8" corner pieces, 5' between cells, 1/ 1/4"x1 1/4" spines.

Rectangular Kite 72

Fig. 68.

Rectangular Kite 73

Fig. 67.

The two kites just described may be modified in a number of ways as follows: - Two square kites side by side will give Fig. 69, and three side by side Fig. 70; these might be increased in both directions until a kite like Fig. 71 might be evolved. Rut their is no great gain and much hindrance in some of these complications. If there is insufficient room between upper and lower surface, not all of the surface is exposed and there is skin friction, again if there is not space enough between the fore and back cells, the front cuts off the air pressure to some extent on the back cells. So Fig. 72 is not high enough, while Fig. 73 has the fore and back cells too close together. Fig. 74 is very unstable in the air. The triangular cross-section has the advantage of a bracing framework and is easy in combination. The bridle is attached to one of the long sticks and the kite rides on a keel, Fig. 75. Three braces about the middle of each cell keep the corner sticks out to place. These can be put in at the field, thus allowing the kite to be rolled for transportation. The triangular kite is sometimes lengthened so as to use three cells, Fig. 76, and again two kites are placed side by side, Fig. 77, and this may be increased by placing another below both, as in Fig. 78. In the last combination we have a large kite to the outside and a smaller one to the inside which can be lengthened so as to give three cells in length, Fig. 79, and many other combinations can be made.

Rectangular Kite 74Rectangular Kite 75Rectangular Kite 76Rectangular Kite 77Rectangular Kite 78

Figs. 69, 70, 71, 72, 73, 74.

Rectangular Kite 79Rectangular Kite 80Rectangular Kite 81Rectangular Kite 82Rectangular Kite 83

Figs. 75, 76, 77, 78, 79.

Rectangular Kite 84

Fig. 80.

Rectangular Kite 85

Fig. 81.

Rectangular Kite 86

Fig. 82.

Rectangular Kite 87

Fig. 83.