B-17 Flying Fortress units of the Eighth Air Force. gPart 1 - download pdf or read online

By Martin Bowman

ISBN-10: 1841760218

ISBN-13: 9781841760216

The Boeing B-17 has come to epitomise the yankee warfare attempt in Europe in the course of international struggle II (1939-1945), the massive four-engined heavy day bomber taking the struggle to Germany from the past due summer time of 1942 via to VE-Day. the first operator of the Flying citadel in Western Europe was once the 'Mighty Eighth'. This quantity, that's the 1st of 2 dealing solely with the 'Mighty Eighth', covers the 15 Bomb teams of the 1st Air department, every one of which managed 4 squadrons. The evolution of the strength is traced via first-hand bills of these members that took half within the motion

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Y, and t h a t i t s t e n s i l e p r o p e r t i e s a r e not+ i n f l u e m e d by temperature i r ! the range o f t e s t i n g temperatures employed. The three load-extension curves have +he same general shape the load r i s e s s t e e p l y during p l a s t i c extensior;, and f r a c t u r e occurs with l i t t l e or no necking. - . __ ........................ ............. .. ............. .. .. ....................... - ~ ~ ~ . . ~ ~- . . . . . . . . . . . . 5% Yield Tensile Percen?

11apply both t o c a s t m a t e r i a l s and a l l o y s made by powder metallurgy. It is expected t h a t t h e annealing cycles required f o r complete homogenig-atfon w i l l be somewhat longer f o r a l l o y s made by powder metallurgy than f o r those made by melt fng Ppeparat ion of Uranium-Silicon Alloys by Powder Metallurgy As yet no m a t e r i a l has been made by Brush B e j ? y l l h l Company on the purchase order discussed i n ~PsD-m-k6, but t h e equipment modifications needed t o make t h e extrusion slugs a r e n e a r l y complete.

00 ODD I) ODD o o BO 00 o o o 0s. - 0. 437 i n o d i a m d i e . One b i l l e t was t r i e d as-cast; t h e second, as-heat t r e a t e d (epsilonized) at 800°C f o r sixteen hours, The as-cast b i l l e t f a i l e d t o extrude. The heat t r e a t e d b i l l e t extruded but i g n i t e d and burned, Additional work d11 be done using copper c l a d epsilonized b i l l e t s . , Extrusions were obtained with only t h r e e of t h e s e b i l l e t s , om each a t 16300F, 1650OF and 17000F using a Oe437 i n , d i m die.

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B-17 Flying Fortress units of the Eighth Air Force. gPart 1 by Martin Bowman

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