Zobrazeno 1 - 9
of 9
pro vyhledávání: '"W. B. Stuart"'
Publikováno v:
Journal of Forest Engineering. 3:45-55
The Adaptive Suspension Vehicle, a proof-of-concept, six-legged robotic walking machine, was subject to a series of field trials to evaluate the maneuverability and trafficability characteristics of walking machines. Maneuverability trials were struc
Autor:
Hooshang Sobhany, W. B. Stuart
Publikováno v:
Journal of Forest Engineering. 2:21-24
A project, "Logging System Evaluation", was initiated by the Iranian Forest Service and Teheran University in 1988. The objective is to develop a quantitative basis for job layout and planning, operations management, and forest management. Initial wo
Autor:
W. B. Stuart, W.D. Greene
Publikováno v:
Southern Journal of Applied Forestry. 9:154-157
Soil compaction in a Chewacla silt loam was significantly reduced by the use of larger tire sizes when the soil was moist (at its plastic limit). Reducing the skidder size slightly did not reduce soil compaction significantly. More important in deter
Autor:
null John V. Perumpral, null J. D. Baldwin, null T. A. Walbridge, null Jr., null W. B. Stuart
Publikováno v:
Transactions of the ASAE. 20:1008-1012
A simple mathematical model for predicting the tree length skidding force has been developed. The skidding force is expressed as a function of log geometry, total weight and coefficient of skidding. The coeffi-cient of skidding was determined under l
Autor:
R. H. Hokans, W. B. Stuart
Publikováno v:
Southern Journal of Applied Forestry. 7:50-53
Scheduling yard-to-mill woodflows requires the regular attention of wood procurement managers. While the calculations are routine, they are sufficiently time consuming to preclude evaluation of more than a first-guess schedule. A computer program imp
Publikováno v:
Transactions of the ASAE. 28:1354-1357
A hydraulically operated, inverted grapple infeed system was developed to feed heterogeneous wood residue into a baler. Finite element analysis was conducted to check the integrity of the design. Input data for the analysis was collected during field
Publikováno v:
Southern Journal of Applied Forestry. 12:222-226
Southern forest industry personnel were surveyed to identify successful small-tree harvesting (thinning or prelogging) operations. Eighty-seven percent of the operations identified utilized a feller-buncher/grapple skidder harvesting system, and six
Publikováno v:
Southern Journal of Applied Forestry. 3:123-125
Center-of-gravity locations and whole-tree weights are useful parameters in both machine design and application. Information on the location of the center of gravity for Appalachian hardwood species is provided for both winter and summer condtions.
Publikováno v:
Southern Journal of Applied Forestry. 4:25-26
Coefficients were developed to convert directly from prism-cruising tally sheets to tons of biomass per acre for Appalachian hardwood stands. It was found that 10 square feet of basal area per acre represent 12 tons per acre in the summer condition a