Results 91 to 100 of about 23,739 (181)

Research on aerodynamic characteristics of high-velocity train bogies

open access: yesJournal of Engineering and Applied Science
The bogie is a critical component of high-velocity trains. As train velocity rises, the operational quality is increasingly influenced by aerodynamic forces.
Jin Yongrong, Chen Xiaoli
doaj   +1 more source

The track and external costs of road transport [PDF]

open access: yes, 1990
1.1.1 The purpose of this study is to review: i) Developments in methodology and data regarding issues such as vehicle delay, accidents, overloading and valuation of environmental effects.
Fowkes, A.S., Nash, C.A., Tweddle, G.
core  

Disaggregated Approaches to Freight Analysis: A Feasibility Study. [PDF]

open access: yes, 1993
Forecasting the demand for freight transport is notoriously difficult. Although ever more advanced modelling techniques are becoming available, there is little data available for calibration.
Fowkes, A.S.   +3 more
core  

Track/train dynamics test procedure transfer function test [PDF]

open access: yes
A transfer function vibration test was made on an 80 ton open hopper freight car in an effort to obtain validation data on the car's nonlinear elastic model.
Vigil, R. A.
core   +1 more source

Automotive Stirling engine development program [PDF]

open access: yes
The major accomplishments were the completion of the Basic Stirling Engine (BSE) and the Stirling Engine System (SES) designs on schedule, the approval and acceptance of those designs by NASA, and the initiation of manufacture of BSE components.
Cronin, M.   +8 more
core   +1 more source

Establishing Load Transfer in Existing Jointed Concrete Pavements, HR-1041, 1985 [PDF]

open access: yes, 1985
In this paper are described the results of a research project that had the objective of developing construction procedures for restoring load transfer in existing jointed concrete pavements and of evaluating the effectiveness of the restoration methods ...

core  

Traktorin vetokoukun kuormitukset ja sijainti [PDF]

open access: yes, 1981
The English version of the report rev. by Pekka Olkinuora. Tutkimus liittyy pohjoismaiseen projektiin NKJ-42 [= Nordiska kontaktsorgan för jordbruksforskare]
Ahokas, Jukka,, Salminen, Risto
core  

Study of the wheel eccentric load mechanism in hydraulic engineering vehicles and improvement measures

open access: yes机车电传动
Wheel eccentric load is commonly observed in driven hydraulic engineering vehicles and seriously impacts their operational safety. To address this issue, a dynamic model that accounts for the drive system was established for an engineering vehicle using ...
LIU Jiahui   +3 more
doaj  

Hydrogen-fueled postal vehicle performance evaluation [PDF]

open access: yes
Fuel consumption, range, and emissions data were obtained while operating a hydrogen-fueled postal delivery vehicle over a defined Postal Service Driving Cycle and the 1975 Urban Driving Cycle.
Hall, R. A.
core   +1 more source

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