Stuart F Johnson

US Patent:

46131906, Sep 23, 1986

Filed:

Apr 10, 1984

Appl. No.:

6/598839

Inventors:

Stuart E. Johnson - Montrose CA

Assignee:

Crane Co. - Chicago IL

International Classification:

B60T 868

US Classification:

303109

Abstract:

A modulator preset circuit for an aircraft antiskid system is disclosed which operates to preset the modulator to a value proportional to aircraft velocity in order to reduce maximum available braking pressure to a greater degree for higher velocities than for lower velocities of the aircraft. This modulator preset circuit is enabled automatically at the start of a landing in order to ensure that the modulator is properly preset prior to the initiation of any braking activity. In alternate forms, the preset circuit can be enabled at all times. By presetting the modulator in this way initial skid activity immediately after aircraft touchdown is markedly reduced, thereby increasing braking efficiency and reducing tire wear.