<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31449675</termId><termName>autogiros</termName><termType>PT</termType><termNote><![CDATA[ Aircraft with unpowered horizontally placed rotors which provide lift, akin to those on helicopters, and conventional engine-driven propellers that pull the vehicles forward, as on airplanes. ]]></termNote><termCreatedDate>2026-03-30 21:01:05</termCreatedDate><relation><relationType>UF</relationType><termId>31449676</termId><termName>autogiro</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31449677</termId><termName>autogyro</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31449678</termId><termName>autogyros</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31449679</termId><termName>gyroplanes</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31426102</termId><termName>rotary-wing aircraft</termName><termType>PT</termType></relation></term>  </Zthes>