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US 5,219,033 AGranted
Tractor for aircraft
AssigneeKrauss-Maffei Aktiengesellschaft
InventorsJurgen Pollner, Gregor Trummer, Peter Molzer
Life of this patent
Estimating the term…
Abstract
An aircraft towing tractor has its acceleration limited to a predetermined limiting acceleration to reduce stresses upon the aircraft undercarriage by a computer-controlled regulator interposed between the gas pedal and the internal combustion engine. The regulator can also provide control of the speed increase of the engine below a predetermined limiting value thereof prior to control of the limiting acceleration.
Claims6
A tractor for towing aircraft, comprising:
- a tractor chassis;
- a combustion engine on said chassis;
- an engine power-control element on said chassis operable by an operator to control an output power of said engine;
- wheels on said chassis for propelling same;
- a transmission connecting said engine with said wheels;
- means on said chassis for transmitting pulling forces generated by the tractor within a range having a maximum permissible load to a nosewheel undercarriage of an aircraft having a fatigue-load limit;
- and
- a regulator operatively connected with said control element and said engine, said regulator controlling a rate of increase of the power output of the engine for preventing said rate of increase from exceeding a predetermined limiting rate independently of pulling force applied to said nosewheel undercarriage upon actuation of said control element, and thereby limit a number of peaks of pulling force applied to said undercarriage exceeding the fatigue-load limit.
5 more elements
Dependencies are inferred from the claim text.