The ZAS5P-2 is a cigarette burner provided with a monoblock of cast Zn-S-Al. The objective of the test was to confirm earlier test results with the addition of 10% aluminum.
As in previous tests with cigarette burners the throat was 8 mm or a ratio of Ap/At of 44. Earlier test (ZAS5-1 en ZAS5-2) have indicated that an Ap/At of 29 is still possible for a good functioning.
The motor has the following characteristics :
Propellant grain
2239 g (monoblok)
Composition propellant
Zn :64.5%, S : 25.5%, Al : 10 %
Type of grain
cigarette
dimensions
length : 251 mm , diameter : 53 mm
Density grain
3.442
Mass ignition powder
92 g
Composition ignition powder
Zn : 75 % : S : 25 %
Length motor chamber
300 mm
Dimensions nozzle
Dc : 56 : Dt : 8 mm ; De : 44 mm
coating
1 layer of textile tape;
1 layer of glass fiber polyester: 1.5 mm
Web thickness
2 mm
Material case
steel
The propellant grain was manufactured through melting in an oil bath.
The nozzle is composed of 3 parts:
1. a convergent section of 20° (half top angle) made from steel
2. a throat section made from graphite inserted in an aluminum tube of 40 mm diameter
3. the divergent part with an half outlet angle of 9° and outlet diameter of 44 mm.
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