AMOC Block 3 Test Aircraft Surface

Galvanic corrosion occurs at a contact point of dissimilar metals when an electrolyte is present. This type of corrosion happens when two different metals are in contact with each other and an electrolyte, such as water or saltwater, is present. The electrolyte acts as a conductor, allowing a flow of electrons between the metals. This creates an electrochemical reaction, causing the metal with a higher electrochemical potential to corrode while the metal with a lower electrochemical potential remains protected. Galvanic corrosion can result in localized damage, known as pitting, on the metal surface.

The hydraulic system operates with an engine-driven pump to control and operate the landing gear. The landing gear is an essential component of an aircraft that allows it to take off, land, and taxi safely. The hydraulic system provides the necessary power to extend and retract the landing gear, ensuring proper functionality and safety during flight operations.

The correct answer is the canopy remover. The phrase "forcibly jettisons the canopy away from the aircraft" implies that there is a specific tool or equipment designed to remove the canopy forcefully. The canopy remover is the most logical choice among the given options as it directly relates to the action described in the question.

The correct answer is slats, wing fence, and vortex generator. These three types of boundary layer control devices are used in aviation to improve the aerodynamic performance of an aircraft. Slats are movable surfaces on the leading edge of the wing that increase lift at low speeds. Wing fences are vertical or horizontal surfaces attached to the wing to control airflow and reduce drag. Vortex generators are small devices that create vortices in the airflow, improving the stability and control of the aircraft.

Magnesium is the correct answer because it is the lightest metal, has a porous structure, is brittle, and easily corrodes.

The permanent repair requirements for an aircraft are to maintain weight, strength, and aerodynamics. This means that any repairs made to the aircraft should not add excessive weight, should restore the structural integrity and strength of the aircraft, and should not negatively impact its aerodynamic performance. These requirements are essential to ensure the safe and efficient operation of the aircraft.

The correct answer is "induced, parasitic, wave." Induced drag is caused by the generation of lift, with an increase in lift resulting in an increase in induced drag. Parasitic drag is caused by factors such as skin friction and interference, which increase as the speed of the object increases. Wave drag is caused by the formation of shock waves as an object approaches or exceeds the speed of sound.

The correct answer is "Life of Type Buy". This concept refers to the practice of acquiring engines based on their expected lifespan or usage rather than just the specific engine model or type. It takes into account factors such as maintenance costs, reliability, and performance over the engine's entire lifespan. This approach allows for more efficient and cost-effective engine management by considering the long-term value and suitability of the engines for a particular application.

JP-8 is the standard jet fuel used in the Air Force. It is a kerosene-based fuel that is specifically designed for use in military aircraft. JP-8 has a higher flash point and lower volatility compared to other jet fuels, making it safer to handle and store. It also has a longer shelf life and better performance in extreme temperatures. JP-8 is widely used by the Air Force due to its compatibility with a wide range of aircraft and its ability to meet the demanding requirements of military operations.

An integral fuel tank is a type of fuel tank that is internal and is built as an integral part of the wing or fuselage structure. This means that the fuel tank is not a separate component, but rather it is integrated into the overall structure of the aircraft. This design allows for a more efficient use of space and weight distribution, as well as providing increased structural strength.

The high pressure compressor (HPC) drive shaft and accessory drive gearbox are connected by the tower shaft.

Corrective maintenance depends on the type of surface, damaged surface area, and degree of corrosion. The visual extent of damage is not a factor that affects corrective maintenance.

Magnetic particle testing is a non-destructive testing method used to detect defects in materials. It is particularly useful for identifying surface and sub-surface defects, such as cracks or discontinuities, in various materials including composites and fiberglass. The magnetic particles are applied to the surface of the material and a magnetic field is then applied. If there are any defects present, the magnetic particles will cluster around them, making them visible and easily detectable. This method is especially effective for identifying defects that may not be visible to the naked eye.

The emergency oxygen bottle is designed to provide oxygen to the pilot in case of ejection until seat/man separation occurs. This is crucial as the pilot may be exposed to high altitudes and low oxygen levels during the ejection process. The emergency oxygen bottle ensures that the pilot has a continuous supply of oxygen until they are safely separated from the ejection seat.

The power inertia reel is responsible for retracting the parachute riser straps and positioning the pilot against the seat for ejection. This mechanism ensures that the pilot is securely fastened to the seat before ejection, providing stability and preventing any potential injuries during the ejection process.

A unicycle is not a landing gear configuration. Landing gear configurations refer to the arrangement of wheels on an aircraft. A conventional landing gear configuration has a main landing gear at the front and two smaller landing gears at the rear. A bicycle landing gear configuration has two main landing gears at the front and one smaller landing gear at the rear. A tricycle landing gear configuration has a single main landing gear at the front and two smaller landing gears at the rear. However, a unicycle landing gear configuration, which would have only one wheel, is not a common or practical configuration for aircraft.

The purpose of the pressure transmitter is to transmit an electric signal to a gauge in the cockpit. This allows the pilot or operator to monitor and display the pressure readings in real-time, providing crucial information about the system's performance and ensuring safe operation.

Acrylics are a type of non-metal that is commonly used in canopies and sight glasses. Acrylics are lightweight, transparent, and have high impact resistance, making them suitable for these applications. They also have good weathering properties, which allows them to withstand exposure to sunlight and other environmental factors. Additionally, acrylics can be easily molded into different shapes, making them versatile for use in canopies and sight glasses.

Aramid/epoxy composites have superior tensile strength and good impact resistance. Aramid fibers, such as Kevlar, are known for their high strength-to-weight ratio and resistance to impact and abrasion. When combined with epoxy resin, which provides excellent adhesion and toughness, aramid/epoxy composites become a strong and durable material. This makes them suitable for applications where high tensile strength and impact resistance are required, such as in aerospace and automotive industries.

The external canopy jettison handle has a lanyard to give rescue personnel a safety zone. This means that when the canopy is jettisoned, the lanyard allows rescue personnel to stay at a safe distance from the aircraft and avoid any potential hazards.

The pressurization and dump valve (P&D valve) is responsible for preventing "coking" or plaque build up in the engine. This valve helps regulate the pressure within the engine, ensuring that it remains within safe limits. By controlling the pressure, the P&D valve helps prevent the formation of deposits or plaque that can hinder the engine's performance.

The correct answer is Pressurization system; Scavenge system; Breather system. These three sub-systems are essential components of a lubrication system in machinery. The pressurization system is responsible for maintaining the pressure of the lubricant, ensuring smooth and consistent lubrication throughout the system. The scavenge system is responsible for removing excess or used lubricant from the system, preventing buildup and maintaining the cleanliness of the lubricant. The breather system allows for the exchange of air and lubricant vapor, preventing pressure buildup and contamination within the system. Together, these three sub-systems work together to ensure proper lubrication and functioning of the machinery.

The correct answer is Single spool and Dual spool. Axial flow compressors can be categorized into two types based on the number of spools they have. A single spool compressor consists of only one rotor and one stator, while a dual spool compressor has two rotors and two stators. These spools are responsible for compressing the incoming air in different stages, allowing for better efficiency and control of the compression process.

Medium carbon steel is used for landing gear and flight control components because it offers a good balance of strength and ductility. It has a higher carbon content compared to low carbon steel, which provides increased strength and hardness, making it suitable for applications that require higher load-bearing capacity. However, it is not as brittle as high carbon steel, which makes it less prone to cracking and failure under stress. Extreme carbon steel does not exist, so it is not a viable option for this application.

Painting is the most common method for surface treating in the AF because it is a cost-effective and versatile way to protect and enhance the appearance of surfaces. Painting involves applying a layer of paint to the surface, which creates a barrier against corrosion, weathering, and other forms of damage. It also allows for customization and color coding, making it suitable for various applications in the AF, such as aircraft, vehicles, and equipment. Additionally, painting can be easily applied and maintained, making it a practical choice for surface treatment.

The fuselage of an aircraft is the main body structure that holds the crew, passengers, and cargo. It consists of longerons, which are long structural members running longitudinally along the fuselage, providing strength and rigidity. Stringers are smaller structural members that run parallel to the longerons, reinforcing the fuselage. Bulkheads are vertical or horizontal partitions that divide the fuselage into compartments and provide additional structural support. Therefore, the correct answer is Longerons, Stringers, and Bulk Heads.

The turbine extracts energy from expanded gases. In a gas turbine engine, the turbine is driven by the high-velocity gases produced in the combustion chamber. As the gases pass through the turbine, they cause the blades to rotate, converting the kinetic energy of the gases into mechanical energy. This mechanical energy is then used to drive the compressor and other engine components.

The probe and drogue in-flight refueling system is used to refuel US Navy aircraft, helicopters, NATO aircraft, and foreign aircraft. This system involves a probe on the receiving aircraft that is inserted into a drogue, or basket, on the refueling aircraft. Fuel is then transferred from the refueling aircraft to the receiving aircraft through a flexible hose connected to the drogue. This system allows for efficient and safe refueling in mid-air, enabling aircraft to extend their range and endurance during missions.

MIL-H-83282 is the correct answer because it is the type of hydraulic fluid mainly used on USAF Aircraft.

The fired warning indicator is specific to the F-15 and contains an indicator that signals ejection system activation. This suggests that when the ejection system is activated, the fired warning indicator will be triggered, providing a warning to the pilot.

Maintenance safety pins are installed on the egress system during maintenance to ensure the safety of personnel and equipment. These pins are used to secure various components and prevent accidental activation or deployment of the egress system. When maintenance safety pins are installed, a Red X is required on the aircraft forms to indicate that the system is not operational. This helps to prevent any inadvertent use of the egress system while maintenance is being performed.

The primary source of pressurized hydraulic fluid is the engine driven pump. This pump is directly connected to the engine and is responsible for generating the necessary pressure to operate the hydraulic system. It draws fluid from the reservoir and pressurizes it before distributing it to the various actuators and components of the system. The engine driven pump is essential for the proper functioning of the hydraulic system and ensures that there is a constant and reliable supply of pressurized fluid.

Thrust is the force generated by the exhaust gas in the opposite direction to its flow. It is dependent on the environmental factors of air, such as temperature and humidity. Therefore, all of the given options are correct as they explain different aspects of thrust.

Eddy current is useful to detect fire/heat damage. Eddy currents are circular currents induced in a conductor when it is exposed to a changing magnetic field. These currents generate their own magnetic field, which can be used to detect changes in the material being tested. When a material has been damaged by fire or heat, its electrical conductivity may be altered, causing changes in the eddy currents generated. By measuring these changes, eddy current testing can effectively identify fire/heat damage in a material.

The Air Force Material Command (AFMC) is responsible for assigning a program manager for each engine. AFMC is the major command of the United States Air Force that is responsible for organizing, equipping, and maintaining the Air Force's aircraft and weapon systems. As part of their responsibilities, AFMC ensures that each engine has a program manager who oversees its development, maintenance, and performance. This ensures effective management and accountability for the engines within the Air Force.

The compressor bleed system is responsible for dumping air pressure into the secondary airflow during engine start to reduce the torque. This helps in ensuring a smooth and controlled start of the engine.

Full Authority Digital Electronic Control (FADEC) is the engine control system that has 4 modes of operation. FADEC is a fully automated system that controls all aspects of engine operation, including fuel flow, ignition timing, and variable stator vane positioning. The 4 modes of operation in FADEC are usually referred to as idle, approach, climb, and cruise. In each mode, the FADEC system adjusts the engine parameters to optimize performance and fuel efficiency based on the aircraft's current operating conditions.

The body buttock line is a reference line drawn through the fuselage of an aircraft. It is used as a location system to provide a consistent and standardized point of reference for measurements and calculations. This line helps in determining the position of various components and systems within the aircraft, ensuring proper alignment and balance. By using the body buttock line, engineers and designers can accurately locate and install components such as wings, engines, and control surfaces, ensuring the aircraft's overall performance and stability.

In convergent ducts, the velocity of the fluid increases as it passes through a narrowing section. This increase in velocity is due to the principle of conservation of mass, which states that the mass flow rate must remain constant. As the fluid's velocity increases, the static pressure decreases. This is because according to Bernoulli's principle, an increase in velocity is accompanied by a decrease in pressure. Therefore, in convergent ducts, the velocity increases and the static pressure decreases.

The given statement states that Turboshaft engines are efficient in supersonic flight and low altitudes. However, this is not correct. Turboshaft engines are primarily used in helicopters and other rotorcraft, where they provide power to turn the rotor blades. They are not designed for supersonic flight but rather for low-speed operations, such as hovering, takeoff, and landing. Therefore, the statement is incorrect.

The engine feed manifold is the part in the engine feed system that is used to deliver fuel to the engine. It is responsible for distributing fuel from the fuel tanks to the engine, ensuring a steady flow of fuel for proper engine operation. The manifold connects the fuel tanks to the engine and regulates the fuel flow to meet the engine's demand.

The correct answer is the Internal canopy jettison handle. This handle is located inside the aircraft cockpit and allows aircrews to manually jettison the canopy in case of an emergency. It provides a quick and accessible way for the aircrew to escape the aircraft if necessary. The external canopy jettison handle, on the other hand, would be located outside the aircraft and may not be easily accessible to the aircrew in an emergency situation. The compressor intermediate case and comprehensive engine management system are unrelated to the canopy jettison function.

The empennage of an aircraft refers to the tail section, which includes the horizontal stabilizer and the vertical stabilizer. These components are responsible for balancing and stabilizing the aircraft during flight. The horizontal stabilizer helps control the pitch, while the vertical stabilizer helps control the yaw. By adjusting the position of the empennage, the pilot can maintain stability and control the aircraft's movements. The wings, secondary flight controls, and ailerons also play important roles in flight, but they are not specifically responsible for balancing and stabilizing the aircraft like the empennage.

A reclaimable product refers to a waste fuel that can be used for its original purpose without undergoing any reprocessing. This means that the waste fuel can be reused or recycled without the need for additional treatment or modification. It is a sustainable and cost-effective solution as it reduces the amount of waste generated and minimizes the need for new resources.

Optical inspections are performed before other NDI (non-destructive inspection) methods. This suggests that optical inspections are considered as an initial step or a prerequisite in the inspection process. It implies that these inspections are conducted to identify any visible defects or issues before moving on to more advanced or specialized NDI techniques.

When the ejection control safety lever is "Up," both ejection control handles are locked and the seat is safe. This means that the lever is in its upward position, which indicates that the safety mechanism is engaged and the ejection controls are locked. This ensures that accidental ejection cannot occur and the seat is secure.

Class C fuel leak classification indicates a heavy seep.

The correct answer is "Worldwide; USAF". This means that the automated engine management system is a data collection system that is used worldwide for United States Air Force (USAF) engines.

The compressor bleed valve is used during engine start to release excess air pressure from the compressor stage. It closes after the engine operates to maintain optimal pressure levels within the compressor. This valve helps regulate airflow and prevent damage to the engine components.

The airflow control system is responsible for regulating the amount of air that enters the engine, ensuring that it remains within the optimal range for combustion. By keeping a proper stall margin, this system prevents the engine from stalling and allows it to operate at its peak performance. It achieves this by adjusting the position of the throttle or other components that control the airflow. This control over the airflow directly impacts the engine's performance, making the airflow control system the correct answer.