Hanriot HD1 Part 2

摘要

For the 27.6" diameter cowl, I cut two 10 mm ply discs joined with two rectangular pieces of ply, notched together to form a cross, then glued on a 1.5 mm ply rim (6" deep). A disc of 4" pink foam was glued on the top and shaped and sealed. From this, a two-part polyester mould was made. The cowl itself was glass/ carbon/Kevlar/epoxy with built-in thin perforated stainless steel plates, for the cowl and dummy engine bolt positions. It was stronger than it needed to be but at 5 Ib, very useful nose weight. For the batteries, I made open top boxes inside the cowl to support curved baffles, which would hopefully, direct more of the incoming air to the JPX cylinders.