Looking for some ID help

[Ammo Rob]

Our Airforce EOD friends sent my unit these pictures looking for some ID help.
The first picture is the ordnance in question.
The second picture gives another perspective.
Unfortunately little is known. The items washed ashore in Churchill, MB. I am told the theory is 1950's or 60's. Unknown origin for the country as at least the US plus Canada where using Fort Churchill at the time.
My thinking is a rocket warhead. It may be a shaped charge. The top looks like aluminum, while the bottom probably steel.
I don't know how big the knife is and the pictures are all I have to go on.
Thank you

 

[Ammo Rob]

 

[HAZORD]

The projo under the knife looks like U.S. 105RR FS-HEAT. The rockets appear to be 4.5 inch Barrage rockets, and there appear to be a couple of U.S. 106RR HEAT projos. It appears that the salt water corroded the fins off the RR HEAT projos.

 

[Ammo Rob]

Thank you. Could someone let me know what the RR and FS stand for?

 

[Ammo Rob]

Agreed on the 4.5 in

Is there any relevant information WRT the 105 on pg 3-25?

Thanks again

 

[HAZORD]

Rob,

RR stands for Recoilless Rifle. FS stands for Fin Stabilzed. Page 3-25 posted above. I had it scanned but missed getting it attached before.

 

[Fr Cdn AT]

Look like the rest of your items, as much odd it might be, seem to be spin-stabilized chinese rockets. hard to guess with a pict. Strait linear, 8 vent holes might be 102mm.

Might be totaly out of wack !... it's kinda late !! lol

 

[Fr Cdn AT]

WOW... is there a way to reduce pict on this...??? did not do that on purpose...

 

[HAZORD]

The rockets are not 107mm Chinese. The Chinese are more tapered on the ogive. The U.S. 4.5 inch without fins is more blunt like the ones in question.

Attached photos, U.S. rockets 2 sizes of 5 inch on top and 2 types of 4-1/2 inch on the bottom. The top three examples have 8 nozzle holes.

The explosive cavity of the 4-1/2 inch extends down into the motor to utilize the motor for fragmentation, as can be seen in the disassembly photo and section view from the manual. The manual designates this design to be a 4.5 inch spin stabilized rocket for ground use. The second set of data is from another manual.

 

[Fr Cdn AT]

Hey Haz,

Well... thank you for your enlightement. I'll learn something new today, as always... and kinda found piece of footage... [ame="http://www.youtube.com/watch?v=Cef6xrrhOm4"]YouTube- T-66 4.5 inch "Honeycomb" Rocket Launcher[/ame]

Thanks again.

Cheers.

FCAT.

 

[Ammo Rob]

That's funny FCAT I had just watched that same video 2 days ago, lol

 

[HAZORD]

FCAT

Thanks for posting the video. I love the old army training films where they use real ordnance!