the Custom Tristar is a 2-fin-with-wingtips model. this was the 4th rocket I built as a BAR... ooohh soooo long ago ... January this year.
it is a good looker and a great flyer so was a natural for upscaling. since it is 9" x BT-50 equivalent, which is nearly 1", a single tube of 4" LOC airframe was a natural. the matching LOC 4:1 ogive nose cone is nearly perfect but I suspect the Custom nosecone is more like 3.5:1 ... anyways we can fudge that with paint.
this was going to be my level 2 project but those huge fins are kinda flexible... flapping out in the breeze... versus a J350, which is somewhat unforgiving. we'll fly it on H & I motors and see what happens...
maybe it won't be so floppy after I glass the fins. anyways rocksim puts max V at Mach 0.99 on the J350 so maybe we won't try that...
this picture is the 1x model. don't laugh, yes it is missing an wing tip. the wing tip made it home from XPRS and is somewhere in the garage...
it is a good looker and a great flyer so was a natural for upscaling. since it is 9" x BT-50 equivalent, which is nearly 1", a single tube of 4" LOC airframe was a natural. the matching LOC 4:1 ogive nose cone is nearly perfect but I suspect the Custom nosecone is more like 3.5:1 ... anyways we can fudge that with paint.
this was going to be my level 2 project but those huge fins are kinda flexible... flapping out in the breeze... versus a J350, which is somewhat unforgiving. we'll fly it on H & I motors and see what happens...
maybe it won't be so floppy after I glass the fins. anyways rocksim puts max V at Mach 0.99 on the J350 so maybe we won't try that...
this picture is the 1x model. don't laugh, yes it is missing an wing tip. the wing tip made it home from XPRS and is somewhere in the garage...