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Wind Chaser

This model was designed to test an idea I had come across reading The Original Rocket Dungeon. The picture below explains how it works.


In our design powder is hold in the upper section of the rocket body between a piston (left on the picture below) and the nose cone. 

Air is channelled from the air intake to the bottom of the powder load  creating excess pressure pushing the air-powder mixture out through the relive hole. 

Specification

  • Length - 355 mm
  • Body Diameter - 25 mm (BT-50)
  • Number of fins - 3
  • Single Fin Span - 30 mm
  • Net Weight - 30 g (without recovery)
  • Maximum Payload  - 15 g
 Engine
 Payload,
g
 Approx. Apogee,
m
 Approx. Max. Velocity,
m/s
 Approx. Max. Acceleration,
m/s/s
 Estes B6-4
 15130
54
120
 Estes C6-5
15
300
90
170

Design Description

Complete  OpenRocket design file is attached at the bottom of this page.


 

 

 




 
 
 

 
 
 
  
 

Launch Log

 Date Motor Ejection Altitude
 WindNotes/ Event
 03/04/11 Estes C6-5
Not recorded
 No wind below 10...15 meters. Gusts about 5 m/s above.

Despite the wind, vertical flight without any noticeable  weathercocking. Ejection at the apogee with a very visible plume of powder.

In the following pictures a powder "contrail" can be seen to the right of the rocket. However, its intensity during the flight was low and it was indistinguishable from smoke produced by the motor.

 23/10/2011 Estes B6-4
 Not recorded
 8.8 m/s
 The last SERFS's launch of the season. Successful deployment and recovery. However, no powder tracer was observed. Possibly due to damaged injection tube. 

Deployment:


     
ċ
WindChaser.ork
(3k)
The Sky Dart Team UK,
27 Feb 2011, 12:14