Unisearch Limited

Joseph Laszlo Juhasz

Richard B Frost

Barry Walter Wing

A navigation aid consists of only three, namely first, second, and third indicia bearing members, the latter being respectively a transparent ground speed member bearing a ground speed scale having an origin, a transparent true air speed member bearing a true air speed scale having an origin, and a transparent wind speed and direction member bearing a wind speed scale and a wind direction indicator and having an origin, one of the first and second members bearing above the origin of its scale a compass rose which carries a drift scale which measures the angle between the ground speed scale and the true air speed scale, the three members lying in parallel juxtaposed planes, and only two connections being provided, one of the connections connecting two of the above members together at the origins of their scales by a connection having one rotational degree of freedom, and the other of the connections connecting the remaining member to one of the other two members at the origin of its scale by a connection having one translational degree of freedom and one rotational degree of freedom.

Navigational aid

A pilot's kneepad for use as an aid to navigation by pilots and navigators of aircraft and other vessels consisting of a plate which has means for attaching it to the upper surface of the thigh of a seated pilot, the plate having on its upper surface information for use in navigational calculations and having hingedly attached to it along one edge a second plate the underside of which also carries information for use in navigational calculations and which has on its upper side means for attachment of a writing pad. Preferably, along one edge of the plate is provided a slide rule that can be used for making inflight calculations.

Growing community of inventors

Sydney, Australia

Joseph Laszlo Juhasz