U.S. Rockets logo
More power to you!!
Genesis of LMR & HPR.

We celebrated our 31st anniversary on 1-1-11!
We celebrate our 35th anniversary on 1-1-15.

The first "posterboy" HPR rocket was the Ace Mongrel
designed and flown by Jerry Irvine with 2 F7, 2 G60
and a central G62. The flight was successful and
recovered. This was summer 1979.

Photo by Tom Kolis.

At the time proposals from California's major rocket
publisher were tendered to modify the MR propellant
weight to 125g and liftoff weight to 5 pounds. NAR
later adopted 125/1500g. HPR as shown was proposed
for NAR adoption and in circa 1984 it was adopted in
principal by NAR.

This image was used in ads for rocket events including
NARWIN in NAR's journal 1982-1984.

Jerry Irvine posing next to a modern version of the
Mongrel kit decorated in company colors. The Mongrel
is now available as a MONGREL 7 with 7-29mm mounts
or as a Mongrel 2.6 which features a host mount
which accepts 2.5" hybrids directly or conversion
mounts for 54mm, 38mm, 29mm, or 3-29mm motors. All
changable in the field without delay. Or Mongrel 2.1
with 2.17" "Host Mount-tm" option from LSS2 series.

USR Mongrel 2.6

Jerry Irvine attended NARAM-21 in Houston, TX in 1979.
A photo of Jerry holding Gary Crowell's Astrobee-D
sacle model was published in the 1980 Centuri catalog p57!
Each year Centuri published a photo of a famous rocketeer
and 1980 was Jerry Irvine's year. He formed U. S. Rockets
that year and California Rocketry magazine the year before.
The size of the model is now referred to as LMR. It was
just barely under a pound with its motor.

C1980 Irvine

USXRL (and 'Fest) at Lucerne Test Range went from 1985-1992.
It spawned about 10 motor manufacturers, 8 kit makers,
3 roving dealers, and fun for thousands of participants!

Photos by Ray Dunakin.
Here is an aerial photograph of the smaller Sunday crowd at one launch.

Testimonials and Product usage
New to bigger rockets . . .

Holy-Cow! I have flown model rockets since I was a child and all the HPR and LMR I had seen had been viewed on the screen of my lap top. However that all changed yesterday at the Lucerne Valley dry lake bed in California. The launch was at the extremely vast dry lake bed in the middle of the high desert, About 20 miles northeast of Victorville, Ca. As I pulled up to park, everything was set up and they were getting ready to launch. The first few rockets that flew were small model rockets. Instant excitement just watching an Estes Screaming Mimi and an Estes Commanche take off straight and true, unaware of what was to come.

(Did I mention I have only seen model rockets fly in real life?)

Next up was a 1.7" rocket on a G80 I think. Holy-cow this is a LMR? Holy-cow. The first HPR rocket was a Nike-Smoke on a J-something and my "holy-cow" instantly changed to a neck snapping "holy-s_ _t!"

Nothing can describe the difference between viewing on a 17" screen and watching in person. So if you're new and don't know what to do, go to a launch A.S.A.P. I must have lucked out on this launch because there were 4 M attempts while I was present. 3 being successful and the 4th preparing to retry when I left at 3:00 in the afternoon. I have always been interested in rocketry but this trip told me that it was much worse than I thought. I was addicted. I was a Rocket-holic.

The "beat goes on" with flights like this
superlative Joe May 8 inch rocket with a 98mm O-3000!

Being a cutomer of U.S. Rockets, you age like a fine wine,
and occasionally get one with your reorder.
You never know what's next.

Tripoli held LDRS-29 2010 at Lucerne Valley, CA. U.S. Rockets was there with
a non-product presence as the motors continued to be banned by this group.
Another vendor's products were officially declared illegal by the state,
but were allowed anyway. Club politics relating to vendors is stupid.
U.S. Rockets was the primary vendor at LDRS-1, 2, 3 and many since.

NAR held National Sport Launch 2011 at Lucerne Valley, CA. U.S. Rockets was
there with a product presence and were welcomed with open arms! There was
a continuous flow of folks all Saturday morning coming up and greeting
Jerry Irvine who spent all day saying hi to old friends.
Here is a link to more NAR NSL 2011 images.


INTRODUCTION U.S. Rockets was founded in 1980 by advanced model rocketeers to serve an expanding definition of consumer rocketeers. U.S. Rockets products poineered the concept and definition of Large Model Rockets (LMR) which are now defined as under 125g (0.28 pounds) propellant and under 1500g (3.3 pounds) liftoff weight. This is the current definition of a "model rocket" in the NAR safety code.

In 1984 U.S. Rockets succeeded in convincing NAR to consider studying High Power Rockets (HPR) for inclusion into the safety code regime. NAR formed a commission to study rockets which exceeded the then safety code limits of propellant and liftoff weight. The result of a NAR multiyear study during which several other associations formed to serve HPR consumers, was that NAR decided to adopt HPR as a valid consumer sport and define a safety code almost identical to the USR version (except excessive offset distances): the NAR HPR safety code. Following that NAR codified these codes and other rules into NFPA-1122 and NFPA-1127 in cooperation with other industry groups and interested parties including all major manufacturers.


Copyright 1980-2014, U.S. Rockets, all rights reserved!