Aircraft landing systems

Details Aircraft landing systems Aircraft landing systems

1976-10-27

1978-09-19

Wilbur, Maynard R.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343109, G01S 118, G01S 110

Patent

active

041157770

ABSTRACT:
A dual I.L.S. glide slope system for allowing a normal 3.degree. descent path plus an additional 6.degree. descent path which can be used for noise abatement procedures etc. In accordance with the present invention these glide slopes are provided on a single assigned R.F. channel with no inverted courses interposed. The first signal null will occur at 9.degree. elevation when all signals will be zero, producing a "flag" alarm.

REFERENCES:
avionics Navigation Systems, M. Kayton & W. Fried, John Wiley & Sons, New York, N.Y. 1969. pp. 528-535, 539.

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