My writing experience and related skills have been well demonstrated in the many reports and later articles and book, that I have prepared and seen published. The argument that led to this result was prepared by the author. It may be found in his working paper (on the internet) as SSRN 2865571 “Einstein’s Criterion Applied to Logical Macroeconomics Modelling”. In this model these double-flows of money versus goods, etc., necessarily pass between only 6 kinds of role-playing sectors. If one sticks to the more basic activities, then these particular quantities and flows provide the most concise yet fully comprehensive result--presentable in a seamless manner, for our whole social system, and suitable for its further analysis. The logic and math are not hard and are suitable for high-school students, who have been shown the basic properties of square-matrices and the notation of the calculus. By this technique it is comparatively easy to introduce any change to a pre-set sociological system that is theoretically in equilibrium (even though we know that this ideal is never actually attained--it simply being a convenient way to begin the study). This change creates an imbalance and we need to regain equilibrium again. Thus, sudden changes or policy decisions may be simulated and the effects of them determined, which will point the way to what policy is best. In my book about it, (see below) 3 changes associated with taxation are investigated in hand-worked numerical examples. In fact, when I first worked it out, the irrefutable logical results were a surprise, even to me! Developments of these ideas about making our subject more truly scientific (thereby avoiding the past pseudo-science being taught at universities), may be found in my recent book: “Consequential Macroeconomics—Rationalizing About How Our Social System Works”. Please write to me at chestdher@gmail.com for a free e-copy of this 310-page book and for any additional information.

Aerodynamics and Preliminary Design - Calculations for the design and performance of various aircraft configurations, 1970Aero-Elasticity (Stress Office) - Analysis of flutter, 1971Fuselage Stress Analysis (Stress Office) - Detailed components analysis, 1971Landing Gears Analysis and Fatigue (Stress Office) - Simulation, dynamics, shimmy instability and analyses for loads, stresses and fatigue on the nose and main landing gears and their braking and steering systems. Monitoring static and dynamic tests on their structures.

Freelance Consultant in Landing gears and Stress Analyses and Fatigue Spectra. Working with 3 companies: IAI, Radom (3 months only) and Elbit Silver Arrow (intermittent for about 6 years) all in Israel, by contractual agreements.