A variable resistor is a device that has the capacity to adjust electrical resistance. They are typically utilized when working with electrical circuitry as they are able to control different voltages and currents. Variable resistors are user friendly and come with a wiper contact that can be slid up or down the resistance track. The wiper contact position on the resistance track is what determines the true resistance value.

Most resistors are used as rheostats. The electrical current that flows through an electrical circuit is determined by two variables: the amount of voltage applied, and the total resistance of the electrical circuit. When we reduce the circuits resistance, the flow of the electrical current increases. When we increase circuit resistance, the flow of the electrical current will be decreased. If we place the rheostat in an electrical circuit, we are able to control the flow of electric current in the circuit. Rheostats help connect circuits while leaving the resistance track open. Rheostats are used in applications where high voltage is required.

When the edge of the resistor track connects with the inputs of the circuit, it is used as a Electronic potentiometer. All three of the device’s terminals must be used to act as a potentiometer. The potentiometer consists of three terminals in which two are fixed and the other is a variable. The two stationary terminals are connected to both ends of the resistive track while the third terminal adjusts the sliding wiper. The potentiometer is changed when the wiper is moved over the resistive path. Resistance is manually operated to control the flow of the electric current. Potentiometers are used to control the volume in audio equipment and frequency attenuation; they are also used in televisions and computer to control the picture contrast and brightness.

Another type of variable resistor is a thermistor - these devices are used to help gauge temperature. Thermistors allow the flow of electric current to adjust rapidly even with a slight change in temperature. Electronic Thermistors are low cost, small in size, and are easily transportable. They aren’t suitable to use over a wide operating range. The demand for thermistors has increased in recent years as they’ve proven to work accurately and effectively in a wide array of applications.

At Veritable Aviation, owned and operated by ASAP Semiconductor, we can help you find your variable resistors for the aerospace, civil aviation, and defense industries. We’re always available and ready to help you find all the parts and equipment you need, 24/7x365. For a quick and competitive quote, email us at sales@veritableaviation.com or call us at +1-503-374-0340.


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Turbine engine ignition systems usually operate for a brief period because the combustor only needs an initial spark. Once ignited, the ignition system is switched off and the fuel remains burning. However, there is potential for the engine to flame out— it'll stop burning. Because of this possibility, continuous ignition is used during critical periods, such as during takeoff, landing, and in emergency situations. This is different from a reciprocating engine, in which the sparks are timed to ignite during various times in the operating cycles.

Turbine engines are usually equipped with a high-energy, capacitor-type ignition system. There are two independent ignition units that operate from a common low-voltage electrical power source: the aircraft battery or the permanent magnet generator. The engine turns the generator through the accessory gearbox. The generator produces power any time the engine is turning. The system needs to be capable of creating a high heat intensity spark because these engines operate in various atmospheric conditions. High voltage is supplied to arc across a wide igniter spark gap because of this.

Ignition systems usually consist of two exciter units, two transformers, two intermediate ignition leads, and two high-tension leads— it is designed as a duel, almost redundant, system for the sake of safety. They can also be categorized into low-tension ignition systems and high-tension ignition systems. Low-tension ignition systems are often used because of the weight and size tradeoff; although high tension ignition systems often have a high service life and the igniter tips erode slower.

Turbine engines are cooled by fan airflow. The air flows through different components of the system, including the ignition system, and returns to the engine nacelle. It’s important to cool the system down, especially during continuous ignition.

At Veritable Aviation, owned and operated by ASAP Semiconductor, we can help you find all the ignition system parts you need, new or obsolete. As a premier supplier of parts for the aerospace, civil aviation, and defense industries, we’re always available and ready to help you find all the parts and equipment you need, 24/7x365. For a quick and competitive quote, email us at sales@veritableaviation.com or call us at 1-503-374-0340.


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There really is no right or wrong answer to the question of “which is better, solid state relays or electromechanical relays?” You’ll hear different things with different reasons, depending on who you ask. It’s best to learn the differences between the two and make that judgement for yourself.

In general, a relay is a power switching solution that is used to allocate power without manually opening and closing the switch. It’s a gatekeeper of sorts for larger electrical signals, using a small electrical signal in order to switch the power on and off. There are many different types of relays-thermal, reed, electromechanical, solid state, and hybrid-of which, two are the most popular, electromechanical and solid state.

An electromechanical relay (EMR) uses electromagnetic forces form a low-power input signal to physically move a part and connect two contacts in order to complete a circuit that contains a high-power signal. It can lead to internal arcing and take a relatively long time to move, but it is useful in many situations due to their simplicity, lower cost, and thermal management.

A solid-state relay (SSR) uses low-power signals to generate optical semiconductor signals that transmit and energize the output signal. The input optical signal acts as a “switch” that allows the high-power signal to pass through. There are many types of SSRs, but they all lack moving parts, hence the name “solid state”.

Both EMRs and SSRs can be used in circuits for heating, lighting, motion control, etc. But, when it comes to comparing specs, SSRs, as a newer design, outperforms EMRs in most categories. SSRs are more complex and unable to do any sort of thermal management, thus requiring integrated heat sinks and fans, incurring more costs. But, SSRs are faster, generate minimal electrical disturbances, use less power for higher output, are more resistant to shock and vibration, and are more suitable for more applications, even those in harsher environments.

Veritable Aviation, owned and operated by ASAP Semiconductor, is a premier supplier of reed relays. With a wide variety of parts and components for the aerospace, aviation, and defense industries, and 24/7x365 customer support, we’re always available and ready to help you find all the parts you need, new or obsolete. If you’re interested in a quote, email us at sales@veritableaviation.com or call us at +1-503-374-0340.


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What is the importance of a turbocharger in a plane's engine?. A turbocharger is a vital component for the plane when climbing to a high altitude. Piston driven aircraft rely on the compression of air for combustion. But, because there is less air pressure at higher altitudes, there is less air to compress. This is where the turbocharger comes into play.

The turbocharger allows the aircraft to operate as if it were operating at sea level (normal air pressure). There are 3 main parts to a turbocharger - the turbine, shaft, and compressor. The turbine is driven by exhaust expelled from the engine. The more exhaust produced, the more the turbine spins. The turbine is connected to the compressor via the shaft. The shaft is the connection between the turbine and the compressor. As the turbine spins, the compressor follows. The compressor spins and draws air in, compresses the air, and feeds the air into the engine.

The two supplementary components are the wastegate and intercooler. The wastegate provides a function similar to a relief valve. It is a diversion mechanism, which can be automatic or manually operated. The diversion of exhaust prevents any excessive turbine spinning, which can result in troublesome manifold pressure. The intercooler function may come as no surprise to most, it cools. A lot of heat is generated when air compresses. The combination of the engine and the boosting of the turbocharger, heat is present throughout the engine. The intercooler acts as an air conditioner, cooling the air from the turbocharger to the engine, reducing strain and ensuring that the engine is operating properly.

As stated before, the turbocharger allows piston-driven aircraft to reach desired altitudes. But a turbocharger is only useful if it is in good condition. To get all the parts you need to maintain and repair your turbocharger, visit us a Veritable Aviation.

Veritable Aviation, owned and operated by ASAP Semiconductor, simplifies purchasing, boosting your capabilities and keeping your turbine spinning smoothly. We should always be your first and only stop for all your aircraft rotable and consumable parts. Veritable Aviation is a premier supplier of top aircraft fueling equipment whether new, old, or hard-to-find. If you're interested in requesting a quote, feel free to email us at sales@veritableaviation.com or call us at +1-503-374-0340. We're always available and ready to help, 24/7x365.


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Engines power more than just our cars, they also power aircraft, from the smallest helicopter to the largest planes. Here’s a list of the 12 most powerful aircraft engines in the world based on thrust, power, and total capacity. Engines power more than just our cars, they also power aircraft, from the smallest helicopter to the largest planes. Here's a list of the 12 most powerful engines in the world based on thrust, power, and total capacity.

List of Most Powerful Aircraft Engines

  1. CFM56-7 Series
  2. GE TF39
  3. Progress D-18T
  4. General Electric CF-6
  5. Rolls Royce Trent 700
  6. General Electric GEnx
  7. Rolls Royce Trent 1000
  8. Engine Alliance GP7000
  9. Rolls Royce Trent 900
  10. Rolls Royce Trent XWB
  11. Pratt and Whitney PW4000
  12. General Electric GE90

1. CFM56-7 Series

CFM56-7 Series, with a thrust-to-weight ratio of 3.7:1, debuted in 1995. It has better fuel efficiency and reduced maintenance costs. CFM56-7 Series

2. GE TF39

GE TF39, with a thrust-to-weight ratio of 5.4:1, was the first ever high-bypass turbofan jet engine produced. It also was the first turbofan that introduced 1 ½ stage fan blades with an 8:1 bypass ratio. GE TF39

3. Progress D-18T

Progress D-18T, thrust-to-weight ratio of 5.7:1, is a high bypass turbofan aircraft engine originally specially designed to power heavy transport aircraft. Progress D-18T

4. General Electric CF-6

General Electric CF-6, thrust-to-weight ratio of 5.08:1, is one of GE's most powerful series of high bypass turbofan engines. It has a max thrust of 274 kN. General Electric CF-6

5. Rolls Royce Trent 700

Rolls Royce Trent 700, thrust-to-weight ratio of 51.35 N/kg, is typically used on the Airbus A330. It is a more powerful and heavier engine with a max thrust of 316 kN. Rolls Royce Trent 700

6. General Electric GEnx

General Electric GEnx, thrust-to-weight ratio of 5.15:1, is a high-performance bypass turbofan jet engine with radical composite fan technology. General Electric GEnx

7. Rolls Royce Trent 1000

Rolls Royce Trent 1000, thrust-to-weight ratio of 6.1:1, has a max thrust of 265.3-360.4 kN. Rolls Royce Trent 1000

8. Engine Alliance GP7000

Engine Alliance GP7000, thrust-to-weight ratio of 5.197:1, powers the world's largest passenger airliner, the Airbus A380. Engine Alliance GP7000

9. Rolls Royce Trent 900

Rolls Royce Trent 900, thrust-to-weight ratio of 5.46:1, has a max thrust of 374 kN and is the first of the Trent series with an advanced engine health monitoring system. Rolls Royce Trent 900

10. Rolls Royce Trent XWB

Rolls Royce Trent XWB, thrust-to-weight ratio of 5.25:1, is used on the Airbus A350 XWB with a max thrust of 430 kN. Rolls Royce Trent XWB

11. Pratt and Whitney PW4000

Pratt and Whitney PW4000, thrust-to-weight ratio of 6-7:1, is one of the most powerful of Pratt & Whitney's engines. Pratt and Whitney PW4000

12. General Electric GE90

General Electric GE90, thrust-to-weight ratio of 5.59:1, is based on NASA's own high energy efficient experimental profane. It has a world record-breaking thrust between 330-513 kN. General Electric GE90

These engines are massive feats of mechanical engineering, but they still need constant repairing and maintenance. Here at Veritable Aviation, owned and operated by ASAP Semiconductor, we carry all parts and spares for aircraft engines, whether new and current or obsolete and hard-to-find. If you’re interested in a quote for a part, call us now at +1-503-374-0340 or email us at sales@veritableaviation.com.


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Molex recently released a new D-Sub Earthing Connector with one interesting quality that’s sure to stand out –its waterproof! That’s right, now you can be sure your IP66 and IP67 are protected from stray voltages and water invasion through a more secure connection to the earth.  Additionally, there is a cap attached to the connector that allows the connector to be IP protected; International Protection (IP) refers to the level of protection against penetration from foreign matters such as dust and water.

Regarding this newly added feature, Molex Product Manager Mario Urner had this to say:

"Mobile equipment such as base stations often operate in harsh environments and need flexible and fast installation and servicing. This means that the connections are exposed to the elements. The D-Sub Earthing Connector addresses the needs of fast installation and combines this with an industry known and robust form factor. This product is ideal for OEMs who are looking for a connector for mobile and exposed electrical equipment in challenging environments."

Molex’s D-Sub Earthing Connector displays such features as a 40.0A contact to an Earth cable and contains a metal sealing frame for easy rear installation. Two bolts attach to the connector, allowing it to be mounted directly onto the housing.

Earthing connectors provide electrical currents between the ground and a grounding/bonding system, which then connects the non-current-carrying metallic parts. These are important because they prevent user harm derived from direct contact with dangerous voltage. These devices are commonly found in households for usages with appliances, machinery and power tools; these are the power cords that have three prong plugs. Factories also use these systems to protect their machinery and equipment from static charges, thus ensuring factory workers remain safe from any harm.

Veritable Aviation is a premier Molex connector parts supplier. With a continuously increasing inventory, you can be sure Veritable Aviation will have everything you need and more. Veritable Aviation will ensure all needs are addressed in a timely and professional manner. Veritable Aviation is known for having hard to find and/or out of stock Molex connector parts and can always help you find cost-effective solutions. For a quote, reach out to the main office by phone: 503-374-0340 or by email: sales@veritableaviation.com


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In an effort to increase commercial sales and strengthen their market position, Elbit Systems Ltd has officially taken on Universal Avionics. On April 11, 2018, Elbit announced they had acquired Universal’s assets for a total purchase price of about $120 million. Now, Universal Avionics is set to lead commercial sales in North America under Elbit’s Commercial Aviation Business Line.

Universal Avionics will continue to operate as-is without any changes to their company name, management or staff. As Elbit Systems President & CEO, Bezhalel Machlis stated, the two companies already “share the same DNA of innovation and technological leadership” and therefore won’t currently need any restructuring.

Elbit Systems Ltd. is a high technology company which primarily operates in defense and homeland security, but they also have hands in commercial aviation, medical instrumentation, public communications and sustainment & support. Elbit is considered a “Glocal” organization, meaning that they operate in both global and local markets.

In recent years, these markets have seen a considerable number of mergers and acquisitions. Additionally, considering ongoing terrorist activities and a heightened emphasis on more technically advanced forces, the need for defense and homeland security services have increased.

Elbit continuously makes efforts to adapt to the needs of the market by upgrading their existing platforms with newer, more advanced technologies. They also offer cost-effective solutions and a comprehensive array of products, which allows them to be a “one-stop-shop” for defense, homeland security and safety needs. With the addition of Universal’s assets, Elbit hopes to strengthen their market position and become the premier cockpit avionics supplier for the aviation industry.

Veritable Aviation is a complete purchasing solution that specializes in avionics parts sourcing– with a continuously increasing inventory, you can be sure Veritable Aviation will have everything you need and more. Veritable Aviation will ensure all needs are addressed in a timely manner. Veritable Aviation is known for having hard to find and/or out of stock parts and can always help you find cost-effective solutions. For a quote, reach out to the main office by phone: 503-374-0340 or by email: sales@veritableaviation.com


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Established in 1970, Airbus is a European corporation that designs, develops and sells civil and military aeronautical products all around the globe. Additionally, to the main civil aerospace business, Airbus has two more divisions: Defense and Space, and Helicopters, the last – mentioned one being the biggest on its industry regarding revenue and turbine helicopter deliveries.

Zodiac Aerospace was founded in 1896 in Plaisir, France. The company is an aerospace group that provides systems and equipment for aircraft's.

In Hamburg, 10th April, Airbus and Zodiac Aerospace France have made an agreement to develop and promote low – deck modules with passenger sleeping berths. The modules will be suitable inside the aircraft’s cargo compartments while providing supplementary services to passengers, enhancing their experience while allowing airlines to distinguish and add value for their commercial operations.

The modules will be effortlessly identical with normal cargo containers during a predictable turnaround if required. Additionally, the airplane’s cargo floor and cargo loading system will not have any impacts, as the passenger module will lay diametrically on it.

Christophe Bernardini, CEO of Zodiac Aerospace Cabin Branch said:


“We are delighted to work with Airbus on this new and innovative project, which reaffirms our expertise in lower-deck solutions. An improved passenger experience is today a key element of differentiation for airlines.”

Geoff Pinner, Head of Airbus Cabin & Cargo Program said:

“This approach to commercial air travel is a step change towards passenger comfort. We have already received very positive feedback from several airlines on our first mock-ups. We are pleased to partner with Zodiac Aerospace on this project which will introduce a new passenger experience and add value for airlines.”

Veritable Aviation has a dedicated and expansive array of aircraft spares parts, Airbus aerospace parts and Zodiac—serving customers as a one-stop shop and primary destination for product sourcing. Veritable Aviation, owned and operated by ASAP Semiconductor, will ensure that your needs are addressed in the most expeditious and transparent manner, all the while offering cost-effective global aircraft component solutions. If you are interested in a quote, please contact our friendly sales staff at sales@veritableaviation.com or call 1-503-374-0340.


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