Darshak Parikh

IITian ! Mechanical Engineer ! Motor-head ! conscientious ! Entrepreneur ! Solo-Travel and Ted by heart(HIMYM)

Materials used for surgical instruments

Metals Used for Surgical Instruments

Out of all the materials available on the earth, only a few satisfy the design and regularity requirements for use in surgical instruments. In this article, we will evaluate the important properties needed to be considered for surgical instruments. Mechanical Properties We know that different metals have very different properties. Finding the best properties to …

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Main parts of an airplane (aircraft)

Main Parts of an Airplane and their Functions

Although aircrafts have evolved a lot since the WWI, the major components of an aircraft have remained same.  The location, size and type of the components may vary from a Cessna 172 to Boeing 727, however the primary functionality of the components remains same. Major parts of an Airplane Powerplant Fuselage Wings Empennage Landing gear …

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nanofluids thermal management

What Are NANOFLUIDS? Why are they used?

Nanofluids are fluids containing nanometer (~1-100*10-9m) sized particles. It is engineered colloidal suspension of solid state nano-particles in a base fluid. Experiments suggest that the colloidal mixture has a higher heat transfer co-efficient compared to the base fluid. This is proving extremely useful as electronic devices get smaller and smaller with heat rejection becoming more …

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fluid mechanics global transport

A Basic, Idiot’s Guide to Fluid Mechanics …and its role in our lives

Fluid collectively represents liquid and gas, and the study of the movement (flow) of fluid is known as “Fluid Mechanics”. This is one of the oldest sciences which our ancestors tried to decipher. As “homo sapiens” started farming and living together, they saw the need to transport water (and later on sewage). Thus, began the …

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cricket swing ball aerodynamics

3 Things You Don’t Know About Aerodynamics

If your answer to the above questions is “NO”, then consider yourself lucky. You are in for a treat today. In this article we will have a very brief introduction of aerodynamics and aerodynamic forces and then, look at frequently happening events around us. We will try to decipher how aerodynamics influence these actions which …

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Factors favouring Hydraulics over Pneumatics

It is always a lively debate between design engineers when looking to select the appropriate fluid power system for their application. No system is perfect and hence the selection is always a trade off between certain parameters to get the most appropriate system at minimum initial and running cost. Hydraulic systems offer maximum power to …

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Selection guide for DCV (Direction Control Valve)

Imagine yourself sitting in a roller coaster, waiting for the operator to press the button or pull the lever to start the ride. In technical terms, you are waiting for him to actuate a DCV (Direction control valve). Yes, new tech roller coasters work on hydraulic systems to gain quick acceleration. A very good example …

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Factors favouring Pneumatics over Hydraulics

The choice between a hydraulic and pneumatic system is a very complicated question which each and every system design engineer will have to face at-least once in their lifetime. A knowledge of hydraulic & pneumatic systems would benefit most design engineers in their professional journey. This article will help you to understand the situations in …

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aircraft landing gear - hydraulics

Hydraulics vs Pneumatics – an introduction

Have you ever wondered why the landing gears of Boeing 787 Dreamliner (and in fact all commercial aircrafts) use hydraulics and not electronic or mechanical power transmission? The reason is that unlike most mechanical and electrical systems, “fluid power systems” (hydraulics and pneumatics) are more reliable and are better able to withstand shock and dampen …

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Hydraulic Systems Components: Part 1

Hydraulic systems are everywhere in mechanical systems and made of a variety of standard components. With properly located and perfectly designed components, the hydraulic system should generate a minimum of heat (waste energy) and operate with minimum maintenance. In this article we will look over some of the primary systems that make up a hydraulic …

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Boeing 747 Landing Gear Design

When it comes to aircraft, hydraulic systems are often the preferable choice when compared to electrical and mechanical systems. This is certainly the case with the Boeing 747 landing gear. However, this still leaves the question: why would we not use a pneumatic system instead of hydraulics? Compared to hydraulics, pneumatic systems offer several advantages: Hydraulic systems requires oil …

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