Repair and Engineering
Duotech Repair and Engineering Posts
Cockpit Instruments and Understanding Magnetic Compass Errors
An aircraft cockpit instruments include altimeters that show the aircraft’s altitude above sea-level, indicators that provide airspeed and attitude (artificial horizon) that display the plane’s relation to the horizon, and an attitude indicator that lets a pilot know...
What is a Radar Warning Receiver, or RWR?
A fighter pilot is flying their jet on a routine patrol over a canopy of a tropical forest. There has not been a report of enemy aircraft operating in his area of operations in over a month. Suddenly, an alert pops up with a blip on a screen alerting him to a mobile...
The CH-53K King Stallion and Video of How a Helicopter Flies
The CH-53 Sea Stallion has served the U.S. military as its heavy-lift helicopter since 1966. Through the last five decades, it has seen many upgrades to its carrying ability and performance. The CH-53 has transported personnel and carried heavy cargo from Vietnam...
Electronic Warfare for A Successful Mission
Control the Skies Using Electronic Warfare A mission package of two EF-18 Growlers and an EA-6B Prowler are preparing to launch from the USS Ronald Reagan. Their intended target is a mobile radar site used to detect aircraft and direct a surface-to-air missile (SAM)...
Understanding A Phased Array Antenna With Water Droplets
A radar detects an aircraft by sending out a high-frequency radio wave and then measuring the time it returns to understand the distance and direction to a target. If you have a slotted planar antenna like the APG-66/68 or the APQ-159, the HF radio wave is directed to...
Chain Home Radar Saved London in the Battle of Britain
It is said that the best defense is a great offense. This means instead of only sitting back in your foxhole and waiting to be attacked, sometimes the best way to protect yourself is to go outside the wire and attack your enemy. This would be getting inside the...
What is the Difference Between a Passive Electronically Scanned Array (PESA) and an Active Electronically Scanned Array (AESA) Radar?
RADAR stands for Radio Detection And Ranging. A radar system detects aircraft, ships, or other objects and the speed and direction in which they travel by sending out a pulse of high-frequency electromagnetic waves. This pulse goes out until it encounters an object...
Pilots Hope They Never Need This Airfoil Shaped System
A C-17 Globemaster is on a late night flight to deliver supplies, equipment, and personnel to Eielson Air Force Base near Fairbanks, Alaska. The flight originated out of McChord Air Force in Spokane, Washington. It’s a little over two and a half hours into the flight...
Communication Among the Flight and Mission Crew of an AWACS Aircraft
An AWACS aircraft is circling above a battlefield where three different units are closing in on a small village. The ground units are tasked with bringing in a local Taliban villager who leads a band of men who attack military supply convoys throughout a nearby city....
DSI’s Summer Interns Return to Western Carolina and Cedarville Universities
Four future engineers will end their summer intern season with Duotech over the next two weeks and return back to school. Two of the interns are attending the engineering school at Western Carolina University and the other two Cedarville University’s engineering...
13 Facts About the ALE-47 Countermeasures Dispenser System (CMDS)
It is very early dawn and a pilot prepares to launch his F/A-18 Hornet into the darkness off the deck of the USS Carl Vinson. The carrier is at an undisclosed location a few miles off a jungle coastline. The pilot’s mission is to penetrate the airspace in a hostile...
Milling and Assembly of Heat Sink on Power Amplifiers
Watch Video Below Utilizing HAAS VF2 and VF4 Multi-axis CNCs, Duotech engineers construct new power amplifier assemblies to replace worn or broken obsolescent parts. Avoid scrapping repairable equipment. Duotech specializes in repairing obsolete equipment that the...
