RAF, Rough Notebook for use in Laboratories and Workshops

[sgdbdr]

Hi,


Interesting short manuscript form WW2 about british bombs :

https://ibccdigitalarchive.lincoln....ginal/84/9673/MCluettAV120946-150515-11.1.pdf


Cheers,


S.

 

[Bellifortis]

Hi @sgdbdr,
that is a very nice notebook. Thank you for posting it. I just went over it in a hurry. In the section about the 4 lb and 25 lb Incendiary bombs it is mentioned in the text and the very good detailed, coloured drawings, that the filling is "Thermite or SENDITE". I'm a pyrotechnician and I don't remember ever to have heard about an incendiary composition called "Sendite". What exactly is "Sendite" ? By the way, I don't know if this has been mentioned here before. The 25 lb incendiary bomb was nicknamed by professionals at that time "Dosenspucker" (Tin-Spitter).
Regards,
Bellifortis.

 

[ThomasP]

From RAE Technical Note No, G.W.200 "Development of Pyrotechnic Igniters for a 6 in. Ramjet" dated June 1952.

"The SR.3O0 composition is a standard incendiary mixture known as 'Cendite', containing aluminium, barium nitrate, and hammer scale (Fe3 04)."

It is also mentioned in the Textbook of Explosives 1938 and I have run across reference to Cendite being used in incendiaries as early as WWI.

From Textbook of Explosives 1938:

"This is a modification of thermite, which burns with a longer flame, and is easier to ignite. The aluminium is protected from corrosion by coating it with boiled linseed oil. The composition of Cendite is:"
______________________ ratio
Aluminium Powder___18
Boiled Linseed Oil_____ 3
Barium Nitrate_______ 44
Hammer Scale________35

 

[ThomasP]

Whoops! Typo in my post above. The Cendite composition is SR.306

"The SR.300 SR.306 composition is a standard incendiary mixture known as 'Cendite', containing aluminium, barium nitrate, and hammer scale (Fe3 04)."