First Paper: Full-Scale Studies of the Performance of Plant in the Compaction of Soils and Granular Base Materials

1966 ◽  
Vol 181 (1) ◽  
pp. 79-90
Author(s):  
W. A. Lewis
Keyword(s):  
Research Laboratory ◽  
Test Procedure ◽  
Full Scale ◽  
The Road ◽  
Base Materials ◽  
Wide Range ◽  
Road Research Laboratory ◽  
Granular Base

The installation and test procedure employed at the Road Research Laboratory for studying the performance of compaction plant is described. The results of tests on a wide range of equipment are summarized and an outline is given of some investigations of more fundamental factors likely to affect the performance of compaction plant. The author would like to acknowledge the help given by his colleagues and particularly Mr A. W. Parsons of the Laboratory who assisted in much of the work described in the paper. The work described in this paper was carried out as part of the programme of research of the Road Research Laboratory and is contributed by permission of the Director of Road Research. Reproduced by permission of the Controller of H.M. Stationery Office, Crown copyright.

Paper 14: Vehicle Defects as a Contributory Cause of Road Accidents

1969 ◽  
Vol 184 (2) ◽  
pp. 101-103
Author(s):  
H. Perring
Keyword(s):  
Research Laboratory ◽  
Road Accidents ◽  
The Road ◽  
Lessons Learnt ◽  
Transport Vehicle ◽  
Road Research Laboratory ◽  
Warranty Claims

Frequence of accidents due to mechanical defects is examined, and in addition the ways in which designers can learn details of failures. Relatively few accidents are fully investigated for mechanical failures, therefore designers must rely mainly on manufacturer's warranty claims for their information about failures which occur in service. These defects have usually not caused the accidents which might have resulted from them. Certain accidents are investigated by police teams, the Road Research Laboratory, accident hospitals, and Ministry of Transport vehicle examiners; and from these bodies information on mechanical defects is supplied to the manufacturers. Designers should apply lessons learnt from vehicles in service to designs on the board.

scholarly journals Test Track for the Road Research Laboratory

Nature ◽  
1960 ◽  
Vol 188 (4754) ◽  
pp. 894-894
Author(s):  
T. LONSDALE
Keyword(s):  
Research Laboratory ◽  
Test Track ◽  
The Road ◽  
Road Research Laboratory

A Full-Scale Testing of an Annular Turbo-Fan Combustor Including Emission Characteristics

1996 ◽  
Author(s):  
Woo Seok Seol ◽  
Min Soo Yoon ◽  
Dae Sung Lee
Keyword(s):  
Test Procedure ◽  
Full Scale ◽  
Test Facility ◽  
Temperature Pattern ◽  
Emission Characteristics ◽  
Joint Research ◽  
Primary Zone ◽  
Wide Range ◽  
Annular Combustor ◽  
Exit Temperature

Korea Aerospace Research Institute has performed a joint research with the Central Institute of Aviation Motors of Russia on the design, manufacturing, and testing of an annular combustor for a turbo-fan engine with the thrust of 8,000 lbf. In order to reduce smoke generation, a rather large amount of air is introduced to the primary zone. Presented in this paper is a description of the full-scale annular combustor, the test facility, the test procedure, and the test results. The measured parameters include the pressure loss and its dependence on flow velocity, the combustion efficiency by gas analysis, the exit temperature pattern factor for a wide range of air excess ratio, the lean blow-off limit, and the emission characteristics. The main test conditions are the ‘ground idle’ condition and the ‘altitude cruise’ condition. It was confirmed that the exit temperature profile is closely related to the location of dilution holes on the flame tube. Lean blow-off limit is rather narrow since the combustor was designed to provide a large amount of air to the primary zone with an aim of smoke reduction.

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