Duotech Media Room - Blog

Supporting the Past. Engineering the Future.

Media Room

Duotech’s news and events, Ask an Engineer, and repair topics by DSI engineers and technicians. Also, find general interests topics about the aerospace and defense industry. Please read and share our recent articles below.

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9 Facts About the C-17 Globemaster III

C-17 Globemaster III is the USAF’s primary strategic, large transport aircraft developed to replace the C-141 Starlifter. The C-17 is operated by three crewmen: a pilot, copilot, and loadmaster. The first production C-17 was delivered to Charleston Air Force Base in...

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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...

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Jet Friday: Request a Speed Check – Blackbird SR-71

Whats long, black, sleek and leaks aviation fuel onto the ground prior to takeoff (and this does not alarm anyone)? The answer would be the Cold War spycraft SR-71 Blackbird. In 1976, the SR-71 set the record for altitude and speed by an air-breathing aircraft at...

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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...

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Thanksgiving and the U.S. Military, by the Numbers

Happy Thanksgiving Day to all our service men and women serving around the globe! Enjoy our video below, Thanksgiving and the U.S. Military, by the Numbers. Thanksgiving and the U.S. Military, by the Numbers  Video Transcript Happy Thanksgiving Day to all our service...

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Working and Living on a U.S. Aircraft Carrier

The United States Aircraft Carrier - It is known as 4.5 acres of sovereign American territory. On its decks, inside its islands, down in the berthing compartments, serving in the chow hall, machine shops, electrical shops, laundry rooms, and ship's stores, over 5,000...

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What Makes an AESA Radar Better? AESA Radar Advantages

Not only are there space and weight savings because of the Integrated transmit and receive chain, an AESA radar provides opportunity for many performance improvements over a mechanically scanned radar antenna. This video discusses a couple of them. The high movement...

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Antenna Arrays Pt. 2 with Silas Gibbs

The concepts of phase shifting antenna elements to create a high-gain antenna can be extended to allow digital control of the antenna direction in what is known as an Electronically Scanned Antenna. Electronically scanned antenna arrays use phase shifting elements to...

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Antenna Arrays Pt. 1 with Silas Gibbs

Directional, high-gain antennas can be made using arrays of individual elements rather than through large horn or parabolic antennas. Individual radiating elements with controlled phase shift combine to create more gain in a desired direction. Initially arrays of...

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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...

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Jet Friday: A Whittle Jet Engine History

The United States is a very large country. Before passenger aircraft were introduced, long distance travel for most Americans was a major inconvenience. To drive across the country, allowing time for rest, would take four or five days. Today, the ability to travel...

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Antenna Elements to Antenna Arrays

This video below discusses an individual antenna element, an array (e.g. leaky waveguide, PESA, AESA). What role does phase shift play in a system and the idea that relative distance and element size is related to frequency. We encourage you to pass this video along...

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A Few Distinguished Flying Cross Recipients

In 1926, the Distinguished Flying Cross (DFC), a military decoration awarded to any officer or enlisted member of the United States military who distinguish themselves through heroism or extraordinary achievement that is clearly distinctive involving operations during...

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Stunning Combat Aircraft Photos from Alaska!

Since the United States acquired Alaska from Russia in 1867, the U.S. military has maintained a strong presence in the upper territory. In the beginning, it was responsible for governing Alaska until it became a district in 1884. Today, the Alaskan Command provides...

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Jet Friday: 0-160 MPH < 4 Seconds...On a Tricycle

0-160 MPH in under four seconds. That seems quite exhilarating to those thrill seekers who like speed. A naval aviator in an F-18 Super Hornet being launched off a carrier catapult will experience 2.5g of g-force when accelerating from 0-170 mph in two seconds in only...

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What to Do in Ogden When Attending the F-16 TCG

When you attend the F-16 TCG Worldwide Review in Ogden, you’ll have the opportunity to meet exhibitors and guests during the exposition. International delegations, U.S. Military, and contractors will participate in productive government and contractor briefings during...

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