Complex sentence: The rotor had blades with an aspect ratio of less than 14, which were wire braced from above from an extension of the rotor axis, which leaned forwards with respect to the aircraft's axis by 2 °.
Split into simpler sentences: The rotor had blades with an aspect ratio of less than 14. The baldes were wire braced from above from an extension of the rotor axis, which leaned forwards with respect to the aircraft's axis by 2 °.