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Two wheeled lunar dumptruckThe design of a two wheel bulk material transport vehicle is described in detail. The design consists of a modified cylindrical bowl, two independently controlled direct drive motors, and two deformable wheels. The bowl has a carrying capacity of 2.8 m (100 ft) and is constructed of aluminum. The low speed, high HP motors are directly connected to the wheels, thus yielding only two moving parts. The wheels, specifically designed for lunar applications, utilize the chevron tread pattern for optimum traction. The vehicle is maneuvered by varying the relative angular velocities of the wheels. The bulk material being transported is unloaded by utilizing the motors to oscillate the bowl back and forth to a height at which dumping is achieved. The analytical models were tested using a scaled prototype of the lunar transport vehicle. The experimental data correlated well with theoretical predictions. Thus, the design established provides a feasible alternative for the handling of bulk material on the moon.
Document ID
19900014418
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Brus, Michael R.
(Georgia Inst. of Tech. Atlanta, GA, United States)
Haleblain, Ray
(Georgia Inst. of Tech. Atlanta, GA, United States)
Hernandez, Tomas L.
(Georgia Inst. of Tech. Atlanta, GA, United States)
Jensen, Paul E.
(Georgia Inst. of Tech. Atlanta, GA, United States)
Kraynick, Ronald L.
(Georgia Inst. of Tech. Atlanta, GA, United States)
Langley, Stan J.
(Georgia Inst. of Tech. Atlanta, GA, United States)
Shuman, Alan G.
(Georgia Inst. of Tech. Atlanta, GA, United States)
Date Acquired
September 6, 2013
Publication Date
December 1, 1988
Subject Category
Mechanical Engineering
Report/Patent Number
NASA-CR-182840
NAS 1.26:182840
ME-4182
Accession Number
90N23734
Funding Number(s)
CONTRACT_GRANT: NGT-21-002-800
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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