Richard Nakka's Experimental Rocketry Web Site


Flight Z-2


 

Basic Information

Name

Z-2

Launch date:

14 October, 2014

Rocket description

63.5mm airframe (plastic)

4 fins, birch plywood

aluminum conical nosecone

2 ft. circular parachute

Payload

Raven altimeter

Liftoff mass

TBA

Flight objectives

- Conduct first flight of Zeta rocket with Impulser motor.

- Test new recovery system on higher altitude flight

 

Motor details

Motor name

Impulser

Propellant

KNSB

Grain mass

230 grams

Nominal impulse

271 N-sec

Class

H

 

Weather conditions

Temperature

7°C

Wind

S 10 km/hr

Sky

mixed sun & cloud

Other

launched at twilight

 

Launch Event Description

After Flight Z-1, a field repair was needed to mount the motor securely. Otherwise setup went well with no glitches. Clear sky confirmed, countdown commenced, and shortly after zero count, rocket rose skyward at a moderate pace, veering slightly into the wind. After burn-out, visual sight was lost. After several seconds, a ‘pop’ heard from ejection charge, followed by a second ‘pop’ a few seconds later. No visual sighting until the ‘pop’ from the main charge fired. Rocket was sighted descending by parachute at a moderate pace.  Touched down about 10 seconds later. Raven beeped out apogee of 2260 feet.

 

Flight Analysis

Event:

Time (sec)

feet

metres

Apogee

12.1

2260

689

Separation

13.5

2240

683

Main deployment

39.2

335

102

Touchdown

49.6

-

-

Range

 

392

120

Descent rates:

ft/sec.

m/sec.

 

Free-fall

79.0

24.1

 

Main parachute

27.7

8.4

 

 

Post-flight analysis and comments:

Flight was fully nominal.

 

Raven baro and accelerometer graph:  Z-2\Z-2_raven.jpg

 

Photos:

Rocket for Flight Z-2 on pad prior to launch                                          Z-2\DSCF3293.JPG

Liftoff                                                                                                             Z-2\DSCF3295.JPG

Soaring skyward                                                                                          Z-2\DSCF3297.JPG

Descending by parachute                                                                          Z-2\Dscf3306a.jpg

Landing in field                                                                                             Z-2\DSCF3307.JPG

                                                                                                                        Z-2\DSCF3308.JPG

 

Videos:  none available

 


Last updated

Last updated March 2, 2015

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