Hi-Z Technology, Inc.

Velimir (Vel) Jovanovic

Mechanical Engineer

Professional Specialty:

Thermal and fluid flow analyses, devising thermal control techniques, material selection and testing of thermal protection materials under high heat fluxes and aerodynamic shear.

Education:

M.S., Mechanical Engineering, with emphasis on heat transfer and fluid mechanics, University of Illinois, Urbana, IL, 1966
B.S., Mechanical Engineering, University of Illinois, Urbana, IL, 1964

Professional Experience:

From July 2001 to present, Hi-Z Technology, Inc., Staff Engineer; developed and successfully tested a heat-storage thermoelectric device for the Army and performed transient thermal analysis for the Army thermoelectric fire detector. Reviewing materials used in thermoelectric devices and collecting thermal property material data, particularly at elevated temperatures.

From November 1995 to May 2001, The Boeing Company, Principal Engineer; as the Lead Thermodynamics Engineer for the Delta-IV launch vehicle booster, determined thermal control system and selected thermal protection materials; as Principal Investigator of IR&D programs to test thermal protection materials for Delta-IV applications, wrote test plans, supervised the tests and monitored budgets and costs; reviewed and approved all of the Delta-IV specifications and drawings of the avionics, ordnance, hydraulics and propulsion components regarding thermal requirements; determined the environmental control system requirements for the temperature control of the avionics, hydraulics and propulsion components; performed the Cost Account Manager activities including the logic-network task analysis, engineering cost estimating, scheduling, monitoring of the budgets and costs, and interfacing with other groups.

From April 1974 to September 1995, General Atomics, Staff Engineer; evaluated the performance of a nuclear power conversion system with a gas-turbine, recuperator, precooler and a two-stage intercooled compressor; performed thermal analyses and defined component cooling requirements; performed the Cost Account Manager activities including the logic-network task analysis, engineering cost estimating, scheduling, monitoring of the budgets and costs, and interfacing with other groups; Improved a complex computer programs for the analysis of the nuclear reactor performance which resulted in increased accuracy and reduced manpower costs.

From December 1967 to March 1974, McDonnell-Douglas Astronautics Co., Engineer/Scientist; performed transient thermal analyses of launch vehicle components and structures; devised thermal control techniques; improved a computer program for the spacecraft solar and planetary heating; wrote the test specification and supervised testing of thermal radiation from a solid-propellant rocket exhaust plume.

From February 1966 to November 1967, General Dynamics, Thermodynamics Engineer; responsible for the thermal design of spacecraft; tested spacecraft in a vacuum chamber under simulated orbital heating conditions; devised thermal control techniques for the spacecraft components and structures.

Professional Licenses, Associations, Patents and Publications:

Registered Professional Mechanical Engineer, California, M19346
Member, American Society of Mechanical Engineers and American Institute of Aeronautics and Astronautics
U.S. patent for the use of intumescent materials in sprayable ablative thermal protection systems
Two recent AIAA papers on recession in heat shield materials under high heat fluxes and shear.