Hybrid rocket motor do not need to be long and hybrid motors will fit in standard kits plus no need to drill a vent hole for a vent line in your rocket.
Contrail Rockets continued to supply flyers thru COVID and in fact continued development of newer products. The latest innovation is the internal vented hybrid motors in both 54 mm and 38 mm.
Assembly and firing of the 20 inch J-300 Black Smoke can be seen on my YouTube channel.
https://www.youtube.com/channel/UCqEfRF3D07y21UTmivI546g
This pre TMT certified motor is producing an amazing 2.12 Newtons per cc of NOS.
Features include;
CNVA injector the 1200 rpm hollow cone of NOS improves burning and moves the flame front to the top of the grain. This is enhanced with the Ring of Fire ignition cup inserted in the CNVA baffle. This baffle is drilled and designed for an Internal Vent so vent gas adds to combustion process and is not wasted and as a bonus no need to drill holes for vent lines in your rocket. With a the unique 4 inch long pleated 13 star Black Smoke grain it has 72 inches of surface area.
The Internal Vented 54 mm 20 inch hybrid motor is one of many innovations coming out of Contrail Rockets. You can download a copy of the 54 mm Internally Vented Hybrid Motor Manual on my new website under construction.
www.contrailrockets.net
Once the new website is completely merged with all the existing certified Contrail Rockets existing motors and reloads from the older website the webdesigner will begin adding exciting new products and features never seen in the hobby hybrid motors market.