Martlet 3A - A Project HARP Projectile

[lakeroadster]

Hats off to @Daddyisabar for turning me on to this.

Project HARP, short for High Altitude Research Project.

Canadian sounding rocket. The Martlet 3A was the first serious attempt to produce a sub-caliber, gun-launched, rocket-assisted, vehicle for the 16 inch gun system. The basic design criteria for the Martlet 3A was to gun launch a vehicle containing a rocket motor that could provide a velocity boost equal to or greater then the initial gun-launch velocity.​

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[BABAR]

Hats off to @Daddyisabar for turning me on to this.

Project HARP, short for High Altitude Research Project.

Canadian sounding rocket.​

Took me a sec after reading this that you weren’t referring to a rocket that took of with the sound
“Vrooom-eh-Vroom-eh-Vrooom-eh-Vroom-eh-Vrooom-eh-Vroom-eh-Vrooom-eh-Vroom-eh-……”

 

[Spacedog49Krell]

Good luck with your HARP project. I met Dr. Bull in 1967 at an aerospace conference in Los Angeles. I got to handle several spare Martlet's, including a Martlet 3, that he brought to the conference.

 

[PeterAlway]

I've been wanting to do a drawing of one of these, but I recall two problems. One was documenting the colors, and the other was that the best drawings I could find seemed to be for versions that never actually flew. I recall there was a book that might have been useful in the University of Michigan library system, but it seems to have disappeared from their collection.

 

[Spacedog49Krell]

I've been wanting to do a drawing of one of these, but I recall two problems. One was documenting the colors, and the other was that the best drawings I could find seemed to be for versions that never actually flew. I recall there was a book that might have been useful in the University of Michigan library system, but it seems to have disappeared from their collection.

The Martlets I saw on display at the conference were bare metal with MARTLET (the # of the series) stenciled in black running vertical on the side. The stenciling appeared to be for the display, only. From reading Dr. Bull's Lab Note journals, the fired projectiles were not painted or stenciled.