Author: Gregory R. WichorekPublisher:
ISBN:
Category : Heat resistance alloys
Languages : en
Pages : 64
Book Description
Experimental Investigation of Insulating Refractory-metal Heat-shield Panels
Author: Gregory R. WichorekPublisher:
ISBN:
Category : Heat resistance alloys
Languages : en
Pages : 64
Book Description
Shield Weights
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Shield weights were calculated for a number of fast reactors having desirable engineering characteristics using the Shield Optimization code. On the basis of these calculations, a Design Fast Reactor was chosen. This reactor, henceforth known as the PWAR-9, has a 12.75 inch core O.R. with a 2 inch Ni reflector. The reactor-shield weight and weight components for a supersonic mission, 2 man crew compartment, are given in table 1. The rpesent shield design uses U and LiR as shielding materials on the reactor and U and plastic on the crew compartment. No intermediate heat exchanger is used since hot Na is pumped directly to the engines. The dose from the activated Na is taken into account by putting more shielding on the crew compartment. No patch weights on the reactor have been added since it is estimated that little will be needed.
NASA Technical Note
Author: Shield Construction Techniques in Tunneling
Author: Kui ChenPublisher: Woodhead Publishing
ISBN: 0128201282
Category : Architecture
Languages : en
Pages : 590
Book Description
Shield Construction Techniques in Tunnelling presents the latest on this fast, environmentally-friendly and relatively safe construction technique, reflecting on its technical risks and challenges as seen in China. Sections introduce the type of shields, the history of the technique, shielding principles, selection, management, the latest techniques in operation, consider engineering cases, discuss construction in gravel, soft-soil, composite, and rock strata, and present video clips of construction that are accessible through QR codes embedded in the text. The book combines theory and practical experience, giving the reader unique insights into shield equipment and construction techniques. The shield tunneling technique is being used very widely, particularly in China, which is building urban-rail transit systems at an unparalleled scale and speed. The use of tunneling-shields provides a fast, relatively-safe, and ecologically-friendly method for the construction of tunnels. However, a number of incidents have shown the risks involved in tunnelling through geologically complex areas. - Gives the principles and practice of shield construction techniques, including shield selection and operation - Demonstrates the latest technologies in shield construction that can be applied in practice - Reflects on the technical risks and challenges of shield construction, based on extensive use of the technique for tunnel construction in China - Discusses challenges in construction in gravel, soft-soil, composite and rock strata - Provides engineers with applicable insights into shield equipment and construction techniques
Reactor Shielding Design Manual
Author: Theodore RockwellPublisher:
ISBN:
Category : Nuclear reactors
Languages : en
Pages : 492
Book Description
House documents
Author: Text-book Or Ordnance and Gunnery
Author: John Forsyth MeigsPublisher:
ISBN:
Category : Gunnery
Languages : en
Pages : 328
Book Description
Handbook of the O' 45-inch Maxim Gun, (G.G. Chamber).
Author: Great Britain. AdmiraltyPublisher:
ISBN:
Category : Maxim gun
Languages : en
Pages : 72
Book Description
Illinois Technograph
Author: Publisher:
ISBN:
Category : College student newspapers and periodicals
Languages : en
Pages : 374
Book Description
Author: