Navigational aid

Details Navigational aid Navigational aid

1977-01-17

1979-02-13

Aegerter, Richard E.

Geometrical instruments

Miscellaneous

Light direction

33 76V, G01C 2120

Patent

active

041388178

ABSTRACT:
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.

REFERENCES:
patent: 1428449 (1922-09-01), Prall
patent: 1917278 (1933-07-01), Weems
patent: 2350424 (1944-06-01), Smith
patent: 2449342 (1948-09-01), Tardif
patent: 2753112 (1956-07-01), Blom-Bakke
patent: 3735100 (1973-05-01), Wagenfeld

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