US 2.75" Rocket ID needed.

[917601]

I have this MK 40 rocket with a MK1 Mod 0 Dummy marked warhead. The rocket is easily dated to 1970, but the Dummy warhead is not clear to me, dated 1968?

Is it of Navy, Air Force or Army origin? All info appreciated.

 

[CFD112]

The distortion makes it tricky but I think it’s actually Mk61 Mod 0, which lines up with an Air Force rocket warhead

 

[917601]

The distortion makes it tricky but I think it’s actually Mk61 Mod 0, which lines up with an Air Force rocket warhead

Wow, you are good. If so, is the rocket motor correct for the warhead? In other words, not a mix and match put together?
Not much detailed info on the internet, or any manuals I can find. Thank you in advance.

 

[917601]

If we can trust AI, you are correct noting MK 61 Mod 0.

AI:
" The Mk 61 Mod 0 is a 2.75-inch training practice (TP) warhead used with folding-fin aerial rocket (FFAR) systems like the Mk 40 rocket motor. It simulates the ballistics and flight characteristics of standard 2.75-inch tactical service warheads during pilot and crew training exercises.

it gives nothing more, Air Force? Navy? but it mentions mating with the Mk 40 ( not Mk 66) motor. I would still love to find a TM reference confirming this.

 

[917601]

More from AI:

"
The Mk 61 Mod 0 training practice warhead was used by all three branches—the Army, Navy, and Air Force—as part of a unified, joint-service logistics system for the 2.75-inch Folding-Fin Aerial Rocket (FFAR).[1, 2]
While it was cross-compatible across services, the naming convention reveals its specific design origins:

• Design Origin (Navy): Under the standard U.S. military ordnance designation system, the "Mark/Mod" (Mk/Mod) nomenclature belongs historically to the U.S. Navy. Components developed natively by the Army typically use the "M" designation (such as the equivalent M151 high-explosive or M274 practice warheads). [1, 2]
• Widespread Deployment: Despite its Navy designation roots, the Mk 61 Mod 0 (a simple 5-pound inert steel casting meant to replicate the weight and ballistics of a live warhead) was adopted heavily across branches. It was utilized by:
  • The Army and Marine Corps on attack helicopters (like the AH-1 Cobra) firing from Mk 40 rocket motors.
  • The Air Force on tactical ground-attack aircraft (such as the A-10 Thunderbolt II or older F-4 Phantoms) firing from high-speed Mk 4 rocket motors. [1, 2, 3, 4