| 摘要 |
PCT No. PCT/AU82/00159 Sec. 371 Date May 25, 1983 Sec. 102(e) Date May 25, 1983 PCT Filed Sep. 23, 1982 PCT Pub. No. WO83/01050 PCT Pub. Date Mar. 31, 1983.A thermal indicator with a sensor (28) mounted over the wing stubs (12, 13) of a sailplane to detect relative movement therebetween due to bending moments applied to the wings on meeting a thermal and a processor of the sensor signals to generate signals indicative of the direction to be turned to enter the thermal. The processor signals are suitably displayed to indicate thermal strength, and left or right directions to enter the thermal.
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