THEONE Posted April 7, 2011 Posted April 7, 2011 It is possible to make a rocket fuel without sugar, like rcandy, so it will not be hygroscopic... ?
Ralph Posted April 7, 2011 Posted April 7, 2011 It is possible to make a rocket fuel without sugar, like rcandy, so it will not be hygroscopic... ? Sure can its called black powder you may also wish to experiment with lactose (I know its not hydroscopic as to how much power youll get with it I cant say)
THEONE Posted April 7, 2011 Author Posted April 7, 2011 Sure can its called black powder Yes but you cant make grains with BP
Ralph Posted April 7, 2011 Posted April 7, 2011 Yes but you cant make grains with BPyou sure can Ive been flying bp rockets for years and years
THEONE Posted April 7, 2011 Author Posted April 7, 2011 (edited) you sure can Ive been flying bp rockets for years and years I mean grains by the melting process... not by ramming... I am thinking to add BP and lactose to make a solid black powder propellant But i think that lactose is lightly hygroscopic...I saw that xylitol-erythritol isnt hygroscopic but i dont know if i can find.... Edited April 7, 2011 by THEONE
Ralph Posted April 7, 2011 Posted April 7, 2011 I mean grains by the melting process... not by ramming... I am thinking to add BP and lactose to make a solid black powder propellant But i think that lactose is lightly hygroscopic...I saw that xylitol-erythritol isnt hygroscopic but i dont know if i can find.... Black powder rockets give much better results than candy ones generally you should totally look into switching over slightly is much better than very
azure Posted April 7, 2011 Posted April 7, 2011 The specific impulse of rocket candy is much higher then that of black powder but black powder is more fun
dagabu Posted April 7, 2011 Posted April 7, 2011 I use R-candy for daylight rockets, most with parachute recovery, I dont use black powder for that and I dont use R-candy at night. Each has its own place but BP has my heart!
madmandotcom Posted April 9, 2011 Posted April 9, 2011 actually, the kno3 is hygroscopic so bp will also have some hygroscopic properties
dagabu Posted April 9, 2011 Posted April 9, 2011 actually, the kno3 is hygroscopic so bp will also have some hygroscopic properties Bugger me! You are just a treat you are!
madmandotcom Posted April 10, 2011 Posted April 10, 2011 Clean KNO3 is not hygroscopic. how do you mean clean? if you are meaning pure, i found that even my 99% pure stuff clumped when i forgot to close it one night
Mumbles Posted April 10, 2011 Posted April 10, 2011 Clumping is not necessarily an indication of a compound being hygroscopic. It's also impossible that the other claimed 1% could be a very hygroscopic substance like sodium nitrate or calcium nitrate.
THEONE Posted April 10, 2011 Author Posted April 10, 2011 It is possible to make an non-hygroscopic rcandy ?
dagabu Posted April 10, 2011 Posted April 10, 2011 No, as long as sugar is used, it will dissolve. The best thing you can do is wax dip the grains right after casting them.
THEONE Posted April 11, 2011 Author Posted April 11, 2011 No, as long as sugar is used, it will dissolve. The best thing you can do is wax dip the grains right after casting them. What is wax dip
dagabu Posted April 11, 2011 Posted April 11, 2011 (edited) You can melt a candle in a double boiler and dip the fuel grain in the melted wax. This picture shows some grains that are wrapped in paper to inhibit the flame, the core and ends are open to the flame. http://www.google.com/url?source=imgres&ct=img&q=http://www.trailertrashaerospace.com/images/grains.jpg&sa=X&ei=71SjTfutBoiitgfNrvCTAw&ved=0CAQQ8wc4hgE&usg=AFQjCNGCkFmNuDt-2M-Tl6uVZ_nJcvYSTA Edited April 11, 2011 by dagabu
Recommended Posts