Results 91 to 100 of about 481,980 (190)

Final design report of a personnel launch system and a family of heavy lift launch vehicles [PDF]

open access: yes
The objective was to design both a Personnel Launch System (PLS) and a family of Heavy Lift Launch Vehicles (FHLLVs) that provide low cost and efficient operation in missions not suited for the Shuttle.
Burton, Lee   +7 more
core   +1 more source

Recent ARRB Research on Heavy Vehicle Safety

open access: yesJournal of Road Safety, 2011
Deaths from heavy vehicle crashes represent 16% of the national road toll, with an estimated cost to society of $2 billion per year. The future will see a significant growth in road freight transport, and so this problem is likely to increase. This paper
M Tziotis
doaj  

Bridge Management—Determination of Allowable Cartage Loads for the Movement of Heavy Vehicles with a Platform Trailer on Concrete Bridges to Satisfy MCFT-Based Section Shear Adequacy

open access: yesInfrastructures
Load rating, using nominated rating vehicles by individual road authorities, is described in the Australian standard for bridge assessment, AS 5100.7, for all load effects, including shear.
Vanissorn Vimonsatit, Koon Wan Wong
doaj   +1 more source

A study of aeroelastic and structural dynamic effects in multi-rotor systems with application to hybrid heavy lift vehicles [PDF]

open access: yes
An aeroelastic model suitable for the study of aeroelastic and structural dynamic effects in multirotor vehicles simulating a hybrid heavy lift vehicle was developed and applied to the study of a number of diverse problems. The analytical model developed
Friedmann, P. P.
core   +1 more source

A logistics and potential hazard study of propellant systems for a Saturn 5 derived heavy lift (three-stage core) launch vehicle [PDF]

open access: yes
The Bush Administration has directed NASA to prepare for a return to the Moon and on to Mars - the Space Exploration Initiative. To meet this directive, powerful rocket boosters will be required in order to lift payloads that may reach the half-million ...
Whitney, E. Dow
core   +1 more source

Earth-to-orbit launch for vehicles for manned Mars mission application [PDF]

open access: yes
Manned Mars missions (MMMs) will require payloads to low Earth orbit (LEO) much heavier and larger than can be accommodated with the Shuttle. Three typical launch vehicles are described that could possibly satisfy the MMM needs.
Page, M.
core   +1 more source

Environmental impacts of the satellite power system (SPS) on the middle atmosphere [PDF]

open access: yes
The heavy lift launch vehicles (HLLV) proposed for use in constructing satellite power systems (SPS) would deposit various contaminants in the middle atmosphere, contaminants that would conceivable have adverse effects on climate and upper air structure.

core   +1 more source

Future heavy duty trucking engine requirements [PDF]

open access: yes
Developers of advanced heavy duty diesel engines are engaged in probing the opportunities presented by new materials and techniques. This process is technology driven, but there is neither assurance that the eventual users of the engines so developed ...
Strawhorn, L. W., Suski, V. A.
core   +1 more source

The Effect of Vehicle Noise on Hearing Thresholds in Heavy Vehicle Drivers

open access: yesIranian South Medical Journal, 2019
Background: Noise-induced hearing loss is a common causes of sensorineural hearing loss. Drivers of heavy vehicles such as bus and truck are more exposed to the noise associated with traffic and automobiles than other members of the community, which can ...
Shadi Pourshafie   +2 more
doaj  

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