This inventor holds 2 USPTO granted patents and 1 published patent application. Top assignee: United Technologies Corporation. Active years: 1984-1985.
Company Filing History:
Years Active: 1984-1985
Title: Innovations of John A. Simpson
Introduction
John A. Simpson is a notable inventor based in Southport, CT (US). He has made significant contributions to the field of projectile technology, holding a total of 2 patents. His work focuses on enhancing the performance and efficiency of gun-launched projectiles.
Latest Patents
One of his latest patents is the "Gun-launched variable thrust ramjet projectile." This innovative design allows a ramjet projectile to follow a classical vacuum ballistic trajectory by maintaining a thrust-drag balance. The thrust of the ramjet is adjusted using an air door that bleeds air from the duct leading from the supersonic diffuser to the combustion chamber. The control system for the air door includes an actuator and a pair of accelerometers. The first accelerometer measures the launch velocity during the projectile's launch in the gun, while a second, more sensitive accelerometer tracks in-flight velocity changes due to atmospheric conditions. The measured velocities are compared with pre-recorded standards, and error signals are generated to represent any deviations. These error signals are then used to drive the air doors, varying the thrust of the ramjet to ensure it follows the desired trajectory.
Career Highlights
John A. Simpson is currently employed at United Technologies Corporation, where he continues to innovate and develop advanced technologies. His work has contributed to the company's reputation as a leader in aerospace and defense solutions.
Collaborations
He has collaborated with various professionals in his field, including his coworker Leo Botwin, to further enhance the capabilities of their projects.
Conclusion
John A. Simpson's contributions to the field of projectile technology demonstrate his innovative spirit and commitment to advancing engineering solutions. His patents reflect a deep understanding of the complexities involved in projectile dynamics and control systems.