| Angle of chord. | Revolutions of turn-table. | Velocity of center of wing (ft. per min.) | Velocity (ft. per second). | Drift (grammes). |
| 5.0° | 10.875 | 1100 | 18.35 | 250 |
| 5.0° | 10.75 | 1085 | 18.07 | 250 |
| 5.0° | 10.75 | 1085 | 18.07 | 250 |
| 10.0° | 8.0 | 808 | 13.47 | 250 |
| 10.0° | 8.0 | 808 | 13.47 | 250 |
| 10.5° | 7.875 | 797 | 13.3 | 250 |
| 10.5° | 7.875 | 797 | 13.3 | 250 |
| 13.0° | 7.0 | 707 | 11.78 | 250 |
| Angle of chord. | Drift (pounds). | Foot-pounds per sec. RV. | Calculated soaring speed carrying 0.5 pounds per sq. ft. (ft. per sec.). | |
| 5.0° | 0.55 | 10.1 | 39.81 | |
| 5.0° | 0.55 | 9.94 | 39.19 | |
| 5.0° | 0.55 | 9.94 | 39.19 | |
| 10.0° | 0.55 | 7.4 | 29.226 | |
| 10.0° | 0.55 | 7.4 | 29.226 | |
| 10.5° | 0.55 | 7.32 | 28.86 | |
| 10.5° | 0.55 | 7.32 | 28.86 | |
| 13.0° | 0.55 | 6.48 | 25.553 |
An examination of the data obtained in this test shows the wing to be of slightly less efficiency than when first tested. While it was considerably stronger it was still too weak for use on the aerodromes.
A second type of superposed wing, Plates [64] and [65], was therefore constructed and tested on the whirling-table on March 2, 1899, with the following results:
Weight of wing = 1025 grammes; weight of guy-posts, etc., = 320 grammes; equivalent weight of guy-posts, etc., = 150 grammes applied at CP of the wing; equivalent load on the wing = 1175 grammes = 2.585 pounds; area of wing = 21.85 square feet; equivalent load on wing = .1183 pounds per square foot.
| Angle of chord. | Revolutions of turn-table. | Velocity of center of wing (ft. per min.) | Velocity (ft. per second). | Drift (grammes). |
| 5.0° | 11.625 | 1170 | 19.5 | 250 |
| 5.0° | 11.625 | 1170 | 19.5 | 250 |
| 8.0° | 10.5 | 1060 | 17.7 | 250 |
| 10.0° | 9.125 | 919 | 15.3 | 250 |
| 10.0° | 9.125 | 919 | 15.3 | 250 |
| Angle of chord. | Drift (pounds). | Foot-pounds per sec. RV. | Calculated soaring speed carrying 0.5 pounds per sq. ft. (ft. per sec.). | |
| 5.0° | 0.55 | 10.72 | 40.087 | |
| 5.0° | 0.55 | 10.72 | 40.087 | |
| 8.0° | 0.55 | 9.75 | 36.37 | |
| 10.0° | 0.55 | 8.43 | 31.4 | |
| 10.0° | 0.55 | 8.43 | 31.4 |
During the tests on the whirling-table this type of construction seemed to be exceedingly strong and stiff, and to be easily maintained in whatever position it was placed. It was therefore thought that it would prove strong enough for the aerodrome, and it was accordingly inverted and given a “sanding test” [p192] by sprinkling sand uniformly over it to such a thickness as to cause it to have a load of 0.75 pounds per square foot. As it showed no serious deflection or change of form under the sanding test, it was decided that it was strong enough for use in tests of the model aerodromes in actual flight.
Upon the completion of these whirling-table tests, the cloth covering of this wing was painted with collodion varnish, which increased the weight of the wing only 50 grammes. In order to make the results of its tests more easily comparable with those obtained before varnishing, the cross guy-wires on the wing were changed to a slightly smaller size in order to make the weight of the wing the same as before. It was tested on March 3, and the following results were obtained:
Weight of wing = 1025 grammes; weight of guy posts, etc., = 320 grammes; equivalent weight of guy-posts, etc., = 150 grammes applied at CP of the wing; equivalent load on wing = 1175 grammes = 2.585 pounds; area of wing = 21.85 square feet; equivalent load on wing = .1183 pounds per square foot.
| Angle of chord. | Revolutions of turn-table. | Velocity of center of wing (ft. per min.) | Velocity (ft. per second). | Drift (grammes). |
| 5.0° | 10.5 | 1060 | 17.7 | 250 |
| 5.0° | 10.5 | 1060 | 17.7 | 250 |
| 10.0° | 8.5 | 859 | 14.3 | 250 |
| 10.0° | 8.5 | 859 | 14.3 | 250 |
| Angle of chord. | Drift (pounds). | Foot-pounds per sec. RV. | Calculated soaring speed carrying 0.5 pounds per sq. ft. (ft. per sec.). | |
| 5.0° | 0.55 | 9.75 | 36.37 | |
| 5.0° | 0.55 | 9.75 | 36.37 | |
| 10.0° | 0.55 | 7.88 | 29.4 | |
| 10.0° | 0.55 | 7.88 | 29.4 |
Although the varnishing of the wing seemed to have no effect on the “drift,” the soaring speed was slightly decreased.