Yes indeed, I met Chuck Piper early 70's at the RRI 'Perkins' test facility
in Sacramento,he was the lead man of our group and fabricated most of the
hardware, I machined some nozzles in my high school machine shop,(throat
diameter 2.25"). The photo on the front cover of his book was called a Tar
Baby, an end burning 5" motor of 350LbF for 16sec. Also a surplus HIVAR
truncated for the correct burn time at 1.5 in/sec,Pc 2-3Ksi, Dt = 0.315".
Ray Goodson introduced HTPB to our group about 1978 which led to the very
successful 3,4&5" nozzles motors. We flew both systems until the early 80's
when we abandoned Perkins and purchased the 320 acre Adobe Rocket Ranch 50
miles east of San Jose. We never flew again.
On Mon, Jul 6, 2020 at 8:39 PM 1bcjolly <1bcjolly@xxxxxxxxxxxxx> wrote:
https://www.rocketmotorparts.com/Asphalt_Based_Solid_Rocket_Propellants_by_Chuck_Piper/p1577809_17391641.aspx
Interesting read.
Sent from my Sprint Tablet.