Search found 12 matches

by Ves
Wed Dec 08, 2010 11:58 pm
Forum: Rocket forum
Topic: A Zinc-Sulfur propelled launch
Replies: 3
Views: 2784

Re: A Zinc-Sulfur propelled launch

Two more Zn/S launches 7-13/11/2010, 2-nth with on board video camera. It is a small Zn/S motor with nozzle throat 2,5mm (about 0.1") and propellant mass about 250 grams.
Video: http://www.youtube.com/watch?v=lzvztX-tTTY
by Ves
Wed Sep 15, 2010 10:24 pm
Forum: Rocket forum
Topic: Biggest caramel rocket in Europe
Replies: 2
Views: 1964

Biggest caramel rocket in Europe

We flew a big rocket on 12-SEP-2010. The rocket "CHERRY-2010" is 5m (16'4") tall, OD-0,5m (1'7"). Start mass - 175kg (375lbs). Propellant - KNO3/Isomalt 65/35 + 2PG + 1RIO, propellant mass 18kg (40lbs) - 8 uninhibited grains. Motor - O-11000 class. Apogee altitude - 415m (1360'). Main chute - 54m^2....
by Ves
Sat Oct 24, 2009 7:50 pm
Forum: Rocket forum
Topic: A Zinc-Sulfur propelled launch
Replies: 3
Views: 2784

Re: A Zinc-Sulfur propelled launch

17-OCT-2009, Another ZnS launch with 2,5Kg propellant.
High definition video: http://www.korio.org/vmk/www/zns/ZnS.html
by Ves
Wed Oct 07, 2009 7:42 am
Forum: Rocket forum
Topic: Steam rocket project
Replies: 86
Views: 27335

Re: Steam rocket project

by Ves
Mon Oct 27, 2008 4:25 pm
Forum: Rocket forum
Topic: A Zinc-Sulfur propelled launch
Replies: 3
Views: 2784

A Zinc-Sulfur propelled launch

Propellant: 4,3kg (about 9.5lbs) Zn/S (75/25 by mass), Start rocket mass = 14kg (30.8lbs), Rocket OD=110mm (about 4.3") . One spectacular flight.
by Ves
Wed May 02, 2007 2:50 pm
Forum: Rocket forum
Topic: anyone have info on Nozzle-Less rockets?
Replies: 36
Views: 20103

Looks to my untrained eye that it doesnt want to go straight... That's right. The construction is just for test, like firework: http://83.142.20.10/vmk/www/downloads/Su_Nozzleless_1.JPG I calculate my nozzleless rocket motors with Richard Nakka's SRM. The important parameter is Kn(min) and Kn(max)....
by Ves
Wed May 02, 2007 7:51 am
Forum: Rocket forum
Topic: anyone have info on Nozzle-Less rockets?
Replies: 36
Views: 20103

Another nozzleless rocket motor test flight:

Diameter D:30mm; L=180mm; core diameter: d=6mm L(core)=160mm
Propellant: KNO3/Su 60/40 Recristallized - 200gramms

Video (1,68MB)

Image
by Ves
Wed Apr 25, 2007 8:49 am
Forum: Rocket forum
Topic: anyone have info on Nozzle-Less rockets?
Replies: 36
Views: 20103

Burn test video of my recristallized ( http://www.jamesyawn.com/ ) sugar propellant:

BurnTest-AVI(2,42MB)

The burn speed is about 3,3mm/sec. :-)
by Ves
Tue Apr 24, 2007 8:43 am
Forum: Rocket forum
Topic: anyone have info on Nozzle-Less rockets?
Replies: 36
Views: 20103

Nozzleless rocket motor: Diameter D:24mm (~1") L=120mm (~5")
Propellant: KNO3/Su 60/40 Recristallized - 70gramms
Rocket - D:40mm L:600mm -start weight 375gr.
Max altitude (apogee) 325m ~1000feet

Video:(1,71 MB)
by Ves
Tue Aug 29, 2006 3:31 pm
Forum: Rocket forum
Topic: Rocket parachute ejection
Replies: 28
Views: 19883

re: Rocket parachute ejection

The first test flight of apogee-fotosensor system is unsuccesful! :oops: The inertial switch malfunction cause a crash. Rocket weight: 130grams (without motor) Motor: 10N*s for low altitude flight (test flight) Flight altitude: less than 90m (300f) Ejection charge fires at touchdown (inertial switch...
by Ves
Tue Aug 22, 2006 10:29 am
Forum: Rocket forum
Topic: Rocket parachute ejection
Replies: 28
Views: 19883

re: Rocket parachute ejection

Thanks NickC :idea:
by Ves
Tue Aug 08, 2006 9:30 am
Forum: Rocket forum
Topic: Rocket parachute ejection
Replies: 28
Views: 19883

re: Rocket parachute ejection

Hello,

A 2weeks ago i make thist simple, cheap and lightweight parachute ejection system. Successfully tested on the groung. Flight test will be soon.