David A Popelka

Title: David A. Popelka: Innovator in Helicopter Technology

Introduction

David A. Popelka is a notable inventor based in Bedford, TX (US). He has made significant contributions to the field of helicopter technology, holding a total of 2 patents. His innovative designs focus on improving the performance and efficiency of multi-bladed helicopters.

Latest Patents

One of his latest patents is the "Nodalized Rotor," which provides a nodalized rotor system for multi-bladed helicopters. This system features equally spaced radial arms with an inboard flapping section to accommodate beam-wise blade flapping and an outboard flex section for pitch changes. Each blade is coupled to the end of the arms with a cuff and pitch horn, which are rigidly connected to the blade and pivotally connected to its arm in the flapping section. The design includes a concentration of weight over a specific section of the blade, enhancing its performance.

Another significant patent is the "Fixed Leading Edge Slat Spoiler for a Horizontal Stabilizer." This invention improves stabilizer performance at both positive and negative angles of attack. The leading edge slat/spoiler is positioned forward and below the leading edge of the stabilizer, directing airflow along the under surface at negative attack angles and disrupting airflow over the upper surface at positive attack angles.

Career Highlights

David has worked with prominent companies in the aerospace industry, including Bell Helicopter Textron Inc. and Textron Corporation. His experience in these organizations has allowed him to develop and refine his innovative ideas in helicopter design.

Collaborations

Throughout his career, David has collaborated with talented individuals such as Jing G. Yen and Floyd W. Carlson. These partnerships have contributed to the advancement of helicopter technology and the successful development of his patents.

Conclusion

David A. Popelka is a distinguished inventor whose work in helicopter technology has led to significant advancements in the field. His innovative patents demonstrate his commitment to improving aircraft performance and safety.