Avionics Engineers and Avionics Installations

Request a Private Jet Charter

Avionics Engineers and Avionics Installations

Wires of airplane dashboard. Cables with plugs close up.

Avionics Engineers and Avionics Installations

Avionics Engineers and Avionics Installations

By John Routledge

Avionics engineers and avionics installations.

When aircraft mechanics plan new avionics installations or avionics modifications for an aircraft, the installers and technicians will be presented with the proposed installation. They will input their concerns and expectations. This will go towards increasing the reliability and maintainability of an installation.

Damage to surrounding wiring and connectors could have occurred without the avionics engineers knowledge. High-quality installations prevent problems caused by vibration, moisture, chafing, RF interference, and other sources of trouble.

Aircraft mechanics installing avionics radios.

The initial part of avionics installations involve building wiring harnesses, then roughly routing the harness into the airplane to see how it will fit. During the rough routing, the installer should note all points that will require special attention to avoid chafing and RF interference. As the actual routing takes place, the installer should take care of those potential trouble spots by installing clamps, protecting wiring harnesses with plastic spiral wrap, and installing caterpillar grommets in lightening holes. To avoid RF interference, the harness should be routed to clear high current cables and any other wiring that could interfere with each other electronically.

To prevent chafing, all wiring harnesses, plumbing, and installed equipment should not come into hard contact with the structure or with each other. At no time should equipment or equipment racks come into direct contact with nearby structures. Because the aircraft skin and structure can flex during flight, establish at least a quarter inch or more for adequate clearance around the proposed and adjoining equipment.

If wiring harnesses lye gently on smooth aluminum skin with no sharp edges, the likelihood of damaged wiring is slim, but possible. The key is relative motion and pressure. The greater the pressure and relative motion, the greater the potential for insulation breakdown. To be safe, it's preferable to clamp the harness to protect it from rubbing against the skin.

In the avionics bays at the nose of aircraft, shock-mounted equipment racks should take into account the movement of the radio during normal aircraft operations. The same is true of wiring harnesses clearance from plumbing lines, especially those carrying oil, fuel, and oxygen. There should be no physical contact between adjoining plumbing, wiring, or structure. Never use plumbing for primary support. It's okay to use standoffs to separate harnesses from plumbing, but at no time should the plumbing carry the weight of the harness.

Wires are insulated, but the insulation isn't impervious to damage from sharp edges, heat, or excessive pressure such as that imposed when wires are clamped with nylon ties against a metal surface. Designers must work to a consistent standard for wiring harness installations.

A mantra for aircraft mechanics is don't limit clamping provisions. A sufficient quantity of clamps is necessary to prevent harness droop between clamps. Don't route wiring harnesses to come into contact with sharp surfaces or ride against any moveable surface. Provide antichafing if necessary. Do not design location and space requirements without allowing for service loops (adequate slack in harness that will allow maintenance). Don't design wiring harnesses to route in hot areas without adequate thermal protection. Don't route harnesses in areas that are subject to chemical damage without protective conduit, such as landing gear wells and engine compartments. Rack mounting. The shelf is prepared with inserts that are first drilled, edge-filled for strength, inserted, and injected to prevent the inserts from coming loose and to add additional strength.

Aircraft mechanics should follow these rules on mounting radio receivers, transmitters, amplifiers and computers. Hard-mounted equipment can be installed as close as necessary to other equipment except for clearance needed for cooling (usually 1/4-inch). Rack-to-equipment contact should take bonding into consideration when depending on tension contact. Paint should be removed from the radio where tension contact is expected to touch bare metal. Provide harness supports at the back of the rack to alleviate stress on wiring and connectors that could cause difficult-to-troubleshoot failures down the line. Allow sufficient distance between the radio and the aircraft's skin. Normal airflow and aerodynamic stresses on the skin can cause changes in this clearance. The goal is to avoid contact between the skin and the radio. Fasteners for holding radio racks in place should be secured with locking devices (either a lockwasher or locknut) to prevent vibration from allowing screws to loosen. This is especially important where radio racks sit above flight controls. If a loose radio rack could impinge on flight controls, it is a good idea to add supports to the rack as a backup to prevent flight control interference. Provide sufficient space for wiring harnesses and coaxial cable connectors. Coaxing cables must enter the mating connector on the equipment in as straight and natural a routing as possible to prevent connector damage.

Provide protection from moisture. The time to find out your windshield is leaking is before you spent out on a new radio installation. Make sure all fasteners used in the installation can handle stresses that will be imposed.

If the installation is in a pressurized aircraft, all areas that penetrate the pressure vessel must be sealed to prevent cabin pressure leakage. One small leak might not affect pressurization, but a number of small leaks could cause a significant drop in the ability to pressurize the cabin.

aviation-database.com [http://www.aviation-database.com/] has lots of resources for the aircraft industry. The web is a vast source of information. Aviation-database collects the industry into one huge database of contacts. aircraft mechanics and avionics engineers [http://www.aviation-database.com/TAC_Europe_and_Technology_Project_Services_TPS.htm] are supplied by TAC Europe just one of the companies featured who supply licensed and qualified technical staff.

Article Source: https://EzineArticles.com/expert/John_Routledge/280216


John Routledge

Read More from Professional...

RFP- Request For Proposal written in notebook

How to Write an Aerospace Industry Business Proposal

Specialized businesses maintain aircraft, design and manufacture interior components or aircraft navigation systems, supply parts for aircraft engines, program monitoring and guidance systems, and so ...

Airplane service crew repairing plane in hangar: two young mechanics, man and woman, fixing jet plane turbine

Aviation Mechanics Overview

The Field of aviation is getting more advanced every year. The need for qualified airline mechanics has also increased. The demand for qualified aviation maintenance technicians has climbed to appro ...

Mechanics inspecting undercarriage aircraft

Aircraft Undercarriage Overhaul

Many factors affect the scope and frequency of aircraft undercarriage overhaul. The possibility of system malfunction increases with severe operating conditions, such as pilot training and agricultura ...

Read More from Lifestyles...

Hand holding abstract polygonal airplane on black background. AI and teamwork concept

Where to Start When Seeking a Career in Aviation

Most of us at one time during our childhoods had a dream of becoming a pilot. This is still the case today and there are millions of kids and young adults dreaming the very same dream. ...

Famous Flyers

Famous Flyers

Featuring interviews with names you know and their favorite aircraft. These celebrities have worked hard to reach the tops of their professions and now enjoy the perks of private aircraft. Some of the ...

Stewardess taking care of passenger. Flight attendant covering tired sleepy businessman with blanket during trip on private business jet.

The Unspoken Reason People Love Private Jets

There are a lot of reasons people give for needing to fly on a private aircraft. Although, the real reason is often unspoken. ...

Read More from PJC Flights of Fancy...

Mountain retreat in Canigou Mountains in France

The First Timer's Guide To A Fabulous Mountain Retreat Vacation

Heading to the mountains as a first timer could be a scary experience, but as with any vacation, a little planning makes it easier. Here is a quick guide to having a fabulous mountain retreat vacation ...

Scenic Santubong Village, beaches and coastal view of Santubong area of The Bako National Park of Sarawak, Borneo Island, Malaysia with mighty Mount Santubong as the background

A Memorable Jungle Trek in Bako National Park

Jungle trekking in Bako National Park in Kuching, Sarawak, was like a test of mental and physical fitness for me. From Bako Village, my friend and I had to take a 30-minute boat ride to reach the jett ...

Several molecules connected, crystallized in the hexagonal system, concept of a carbon structure.

Future Materials Will Change Aerospace Forever - Shouldn't We Make That Happen Now

Consider if you will all of the failed prototypes in aviation since mankind's first powered flight, then consider all the successes. Lastly, think about all the designs which may have in fact been ahe ...

Submit an Article


Submit Article

Image (1280px x 600px PNG or JPEG Files Only)
Thumbnail (300px x 300px PNG or JPEG Files Only)