Rocket Fleet, 1989

Scans of two regrettably very deficient analog photos taken at my former home in Nürensdorf, Switzerland, in autumn of 1989, depicting part of what was then my rocket fleet as well as some designs under construction at the time.

Top photo shows, from left: Vehicle 59, built from Flight Systems and Centuri parts and designed to fly with Flight Systems E black powder motors. Vehicle 59 measured 886 mm in length (including a payload section of 456 mm length). The rocket in the center is my scratch-built Honest John semi scale model (still lacking any finer details), while the model on the right is Vehicle 51 B Enigma II, a development of the earlier Vehicle 39 A Enigma. Vehicle 51 B was constructed using Estes, Centuri, and CMR components and intended to be flown with Flight Systems E and F motors. It measured 896 mm in length and featured a payload section of 158 mm usable space. The lower and upper sections of the rocket were recovered by means of two separate parachutes.

Lower photo, from left: Vehicle 32, a cluster design utilizing three 18 mm motors and featuring a payload section. Next to it are Vehicle 23, a 24 mm experimental design with ultra thin, high aspect-ratio plywood fins, and Vehicle 22 B, also using three high aspect-ratio plywood fins that were strengthened with an epoxy coating. The rocket line-up is completed by Vehicle 48 A Heracles (designed for 21 mm and 24 mm D motors), Vehicle 39 A Enigma, and Vehicle 44 A Rhea (a sport model with payload section, built specifically for Flight Systems D18 motors).

Rocket Fleet, 1986

Part of my active fleet, photographed on the occasion of our morning to afternoon launch at Allmend Frauenfeld, Switzerland, on Saturday, April 26, 1986. It was a beautiful, clear day with only low wind and a temperature of 20 degrees Celsius. Incidentally, this was also the day the Chernobyl nuclear disaster took place.

Lower photo shows, from left: the black Vehicle 31 (featuring self adhesive Mylar foil on payload section), the white and black Vehicle 39 A Enigma, (flown for the first time during this launch), and the black Vehicle 28 A (with white fin and nose cone), a rocket built specifically to fly with Flight Systems E and F black powder motors. The flights of Vehicle 28 A revealed stability deficiencies which subsequently led to a redesign.

Next are the two prototypes of Vehicle 30; #8230 B is on top and #8230 A at bottom. I was about to lose the latter that day. Then the silver/black/red Vehicle 44 Rhea, a payload carrier built from CMR components. To the right of Vehicle 44 are my Estes Bandit (repaired from its previous motor failure) and my trusty Centuri Starfire. Then, the newly completed silver/white/black Vehicle 48 A Heracles (bottom) and the red/white Vehicle 36 B sport model, built from Centuri parts (top).

This is followed by the silver/white/black Vehicle 22 B payload model with its high aspect-ratio fins, my Centuri Excalibur 2, and my Estes Titan II ICBM. The line-up is completed by Vehicle 33, a delta-wing boost glider loosely inspired by Estes' legendary Astron Skydart. Vehicle 33 was scratch-built in 1981, using Flight Systems and Estes components.

In addition to all of these rockets, the top photo also shows one of my Estes Astron Alphas (far right), frequently used to open a launch and determine the wind conditions.

Photography by Martin Kyburz.

[Entry amended October 17, 2016.]

Vehicle 39

The very first rocket ever featured in this blog, Vehicle 39 A Enigma, photographed on the occasion of a return to the location of its first flight in northeast Switzerland, on June 17, 1999, 13 years after the event.

Vehicle 39 was launched on an Aerotech E15-7W composite motor, from an Aerotech Mantis launch pad. The Mantis had originally been developed by Enertek, a company established in the late 1980s by Centuri's Lee Piester, together with Gary Rosenfield, Bill Stine, and Paul Hans. Unfortunately, Enertek failed to get off the ground, so to speak, and this truly versatile launch pad design (along with other items) later resurfaced a an Aerotech product. As with all of my launch pads, I added a slanted umbilical mast to my Mantis, in order to attach the ignition wires and thus reduce the weight which often threatens to pull the ignitor out of the motor.

Vehicle 39's flight was perfect, as was the deployment of the booster and payload section parachutes. The rocket carried two Estes Transroc II sonic beacons.

Photography by Erol Ünala.

1970s Model Rocketry, Part 3

Regrettably, the 38 years that have passed since these photos were taken have caused me to fail to recall the designation of this vaguely Scout-inspired rocket. It had been designed by my best friend, Dave Sharma, a tremendously skilled rocket builder. The rocket was built from Centuri parts; it measured in excess of 1000 mm in length and approximately 35 mm in diameter, and it contained an extended payload compartment.

I either acquired or traded the rocket from Dave and flew it successfully a number of times, launched from a Centuri Power Tower launch pad. It was damaged, however, on the day these photos were taken in northeast Switzerland, in July of 1978. The pleasing aesthetics of the design and its fantastic flight performance left their mark with me, and I subsequently designed and built an upscaled version of it, named Vehicle 39 Enigma. Vehicle 39 became one my main rockets and is still a part of my collection to this day.

Photography by Hans Hofer.

First Flight Of Enigma

Vehicle 39 A Enigma launching from customized theodolite metal tripod on a Flight Systems E60-8 mid-power black powder motor. This was the rocket's first flight. 

Vehicle 39 was built during March and April of 1986, loosely based on a design for a smaller rocket constructed by my best friend Dave Sharma in 1978. Utilizing CMR and Estes parts, Vehicle 39 measured 835 mm in length and 41.5 and 29.5 mm in diameter. It was originally intended to be flown with Flight Systems E and F motors and later converted for use with Aerotech motors.
 
Photographed by Martin Kyburz at Allmend Frauenfeld, Switzerland, on Saturday, April 26, 1986.