2a352h Volume 2 Aircraft Technology

Access doors and panels provide access to internal aircraft equipment. These doors and panels are designed to be easily opened or removed, allowing maintenance personnel to access and inspect various components and systems inside the aircraft. This access is crucial for performing regular maintenance, repairs, and inspections to ensure the proper functioning and safety of the aircraft.

The F-22 uses JP-8 fuel grade.

To ensure the cockpit is safe for entry, you should be on the crew ladder. This is because the crew ladder provides a stable and secure platform for accessing the cockpit. Being on the crew ladder allows you to visually inspect the cockpit for any potential hazards or obstructions before entering. It also ensures that you can safely climb into the cockpit without risking any injuries or accidents. Therefore, being on the crew ladder is the appropriate location to ensure the cockpit is safe for entry.

Supercruise refers to the ability of an aircraft to sustain supersonic flight without the need for afterburners. Afterburners are typically used to provide an extra boost of thrust for supersonic flight, but with supercruise, the aircraft can maintain supersonic speeds using only its regular engines. This allows for improved fuel efficiency and longer range compared to using afterburners.

The glass fiber is bonded to the ferrule in fiber optic termini using epoxy. Epoxy is a type of adhesive that is commonly used in fiber optic applications because it provides a strong and durable bond. It is able to bond the glass fiber securely to the ferrule, ensuring that it stays in place and maintains proper alignment. Epoxy is also resistant to temperature changes and can withstand the harsh conditions typically encountered in fiber optic systems. This makes it an ideal choice for bonding the glass fiber to the ferrule in fiber optic termini.

The F-22 reference planes are numbered in 1-inch increments. This means that each reference plane is labeled with a number that is 1 inch apart from the next one. This numbering system allows for precise measurements and reference points on the F-22 aircraft.

The function of the aircraft service doors is to provide access for scheduled inspections, servicing aircraft systems/components, and removal and installation of line replaceable units. These doors allow maintenance personnel to easily access and work on various components and systems of the aircraft, ensuring that they are properly inspected, serviced, and repaired as necessary. This helps to maintain the overall functionality and safety of the aircraft.

The correct answer is Right horizontal console. The side stick controller, which is used to control the aircraft's pitch and roll, is located on the right horizontal console. This console is typically positioned within easy reach of the pilot's right hand, allowing for precise control of the aircraft's movements.

Stealth technology is designed to reduce the radar signature of an aircraft, making it difficult for radar systems to detect and track it. However, it does not make the aircraft completely invisible. Stealth technology achieves this by minimizing the reflection of radar waves and by using special materials and shapes that absorb or deflect radar signals away from the radar receiver. While it can significantly reduce the aircraft's radar cross-section, it does not render it completely invisible to radar systems.

In the event of a hydraulic failure, the landing gear is extended pneumatically. Pneumatic systems use compressed air to generate mechanical motion, and in this case, it is used to activate the landing gear mechanism. This method allows the landing gear to be deployed even when the hydraulic system is not functioning properly, ensuring the safety of the aircraft during landing.

Avionics technicians are responsible for maintaining the electrical and environmental systems of the F-22. These systems are crucial for the functioning of the aircraft and include components such as electrical wiring, power distribution systems, climate control systems, and environmental monitoring systems. Avionics technicians are trained to troubleshoot, repair, and maintain these systems to ensure the aircraft's optimal performance and safety. They play a vital role in the overall maintenance and operation of the F-22.

The correct answer is the fuselage, the empennage, and the wings. The fuselage is the main body of the aircraft that houses the crew, passengers, and cargo. The empennage refers to the tail section of the aircraft, which includes the horizontal and vertical stabilizers. The wings are the primary lifting surfaces of the aircraft, responsible for generating lift and providing stability during flight. These three main sections are crucial components of the airframe that contribute to the overall structure, stability, and performance of the aircraft.

Low observable (stealth) technology enhances the aircraft by making it nearly invisible to enemy defenses. This means that the aircraft is difficult to detect and track using radar, giving it a significant advantage in combat situations. Additionally, this technology increases the lethality and survivability of the weapon system, as it allows the aircraft to approach targets undetected and deliver its payload with minimal risk of being intercepted or shot down.

The main and side weapons bays serve the function of providing access for weapons loading. When closed, they also help in maintaining the aircraft's low observable qualities and aerodynamic properties. This means that when the weapons bays are closed, the aircraft's stealth capabilities and overall performance are not compromised.

The correct answer is "The fuselage station, the buttock line, and the waterline." These three reference planes are used on the F-22 aircraft for measurement and alignment purposes. The fuselage station is a longitudinal reference plane that measures distance from a fixed point on the aircraft. The buttock line is a vertical reference plane that runs through the center of the aircraft's fuselage. The waterline is a horizontal reference plane that is parallel to the aircraft's water surface when it is at rest. These reference planes are essential for maintaining proper alignment and balance of the aircraft during construction and maintenance.

Non-metallic tools should be used to remove structure panels to prevent any damage or scratches to the surface. Metallic tools can potentially cause damage to the panels or leave marks, while non-metallic tools are less likely to cause any harm.

Worn fasteners are more likely to loosen over time, leading to tool slippage. When a tool slips while trying to tighten or loosen a worn fastener, it can cause damage to the aircraft door or panel skin. This can result in compromised structural integrity or even potential safety hazards. Therefore, it is important to replace worn fasteners immediately to prevent any potential damage or accidents caused by tool slippage.

The F-22 aircraft can be ready to taxi within 30 seconds after engine start. This suggests that the aircraft has efficient systems and processes in place to quickly prepare for takeoff. A shorter time frame, such as 10 or 20 seconds, may be too quick for the necessary checks and preparations, while 40 seconds may indicate a slower process. Therefore, 30 seconds seems to strike a balance between speed and thoroughness.

The minimum safe distance from the intake of a running aircraft at all power settings is 25 feet. This distance is necessary to ensure the safety of individuals and prevent any potential accidents or injuries that could occur due to the powerful airflow and debris being sucked into the intake. It is important to maintain this distance to avoid any risk of being pulled towards the intake or being hit by flying debris.

The correct answer is 4100 psi. The F-22 flight control system is driven by hydraulic pressure, and specifically, it requires a pressure of 4100 psi to operate effectively. This level of pressure ensures that the system has enough power to control the aircraft's movements and respond quickly to pilot inputs.

The doors and panels are constructed using a composite/titanium material. This means that the material used is a combination of different materials, with titanium being one of the main components. This combination of materials provides strength and durability to the doors and panels, making them suitable for various applications.

The main weapons bay doors will open 125 degrees for weapons loading.

The correct answer is 27 gpm. This refers to the amount of fluid flow provided for emergency in-flight hydraulic power. It indicates that in emergency situations, a flow rate of 27 gallons per minute is available to maintain hydraulic power.

The recommended safe distance behind a running aircraft engine is 200 feet. This distance is necessary to ensure the safety of individuals as the engine exhaust and debris can pose a risk. Being at a safe distance minimizes the chances of being exposed to potential hazards such as heat, noise, and jet blast. It also allows for better visibility and maneuverability for ground personnel and other aircraft in the vicinity.

The signal loss of the aircraft cable can be calculated by subtracting the patch cable signal loss from the reading of the cable under test. In this case, the patch cable signal loss is -19.6 dB and the cable under test is reading -21.2 dB. Therefore, the signal loss of the aircraft cable only is -1.6 dB.

The Aft loop is responsible for cooling the APU oil.

The weapons bay doors can be opened using the portable maintenance aid (PMA), which is a tool specifically designed for maintenance tasks. Additionally, the doors can also be opened from the cockpit, allowing the pilot to have direct control over the opening process.

The thrust class of the F-22 engines is 35,000 lbs. This means that each engine is capable of producing a thrust of 35,000 pounds, which is a measure of the force that propels the aircraft forward. This level of thrust is necessary to provide the F-22 with the power and speed required for its advanced capabilities and maneuverability in the air.

The F-22 can carry a total of 1,200 gallons of fuel externally, with each tank holding 600 gallons. This means that there are two tanks, each with a capacity of 600 gallons, resulting in a total of 1,200 gallons.

A fiber optic cable transmits information 15 times faster than twisted pair or coaxial cable. This is because fiber optic cables use light signals to transmit data, while twisted pair and coaxial cables use electrical signals. Light signals can travel at a much higher speed than electrical signals, resulting in faster transmission of information.

The correct answer is the rudders, flaperons, horizontal tails, and ailerons which deflect upon speedbrake switch activation. This means that when the speedbrake switch is activated, these surfaces will change their position to help slow down the aircraft.

The correct answer categorizes doors and panels based on their characteristics. It includes actuated doors (doors that are operated by a mechanism), screens and windows (doors and panels with screen or window features), seals (doors and panels that provide airtight or watertight closure), infrequent access (doors and panels that are not frequently used), and permanent skins (doors and panels that are permanently attached to the structure). This categorization helps in understanding the different types and purposes of doors and panels in a given context.

The correct answer is 270 vdc. The engine inlet total temperature sensor requires a high voltage direct current (vdc) of 270 volts to operate effectively. This voltage is necessary to accurately measure the temperature of the air entering the engine. Alternating current (vac) is not suitable for this sensor as it requires a continuous and stable voltage supply.

The correct answer is 2 because the question is asking for the number of AMADs (Aircraft Mounted Accessory Drives) installed on the F-22 aircraft. The answer options provide different numbers, and the correct answer is the option with the number 2.

If the ejection seat sequencer is red, it indicates that the seat has been activated or there is a malfunction. In order to ensure safety, it is necessary to wait for a certain period of time before performing any maintenance on the aircraft. The correct answer of 2 hours suggests that it is necessary to wait for this duration before conducting any maintenance activities on the aircraft after the ejection seat sequencer turns red.

Personnel should remain 300 feet away from a transmitting radar on the F-22 aircraft, in contrast to the F-16. This distance is necessary to ensure the safety of personnel as the radar emits electromagnetic radiation, which can be harmful if exposed to at close proximity. By maintaining a distance of 300 feet, the personnel can minimize their risk of potential health hazards associated with the radar's radiation.

The two independent hydraulic systems are capable of providing a pressure of 4100 psi.

System 2 provides power for the main landing gear extension and retraction in the hydraulic system.

The weapons bay doors will open and close in 3 seconds during ground maintenance operations.

The liquid cooling system has two loops. This means that there are two separate paths through which the liquid flows. Each loop has its own set of components, such as pumps, radiators, and tubing, to cool different parts of the system. Having two loops allows for more efficient cooling as it helps to distribute the heat evenly and prevent any overheating issues.

The correct answer is 60,000 lbs. This is the maximum weight at which the F-22 can take off. It is important for an aircraft to operate within its maximum takeoff weight limit to ensure safe and efficient performance during takeoff and flight.

The F-22 uses two F119-PW-100 afterburning turbofan engines to power the aircraft.

The correct answer is that the NLG (Nose Landing Gear) is mechanically linked to the nose landing gear assembly and closes as the nose landing gear retracts. It remains in the up position until the gear is lowered again. This means that the NLG is not hydraulically or pneumatically linked, but rather operates through mechanical linkage.

The correct answer is Eight. Six fuselage tanks and two internal wing tanks. This means that the fuel system consists of a total of eight tanks, with six located in the fuselage and two located in the wings.

The biggest advancement the PMA offers the F-22 maintainer is the ability to view Interactive Electronic Technical Manuals (IETMs). This allows the maintainer to access and reference important technical information and instructions directly on the PMA device, making it easier and more efficient to perform maintenance tasks on the F-22 aircraft.

The battery switch is located on the right aux console.

Fixed interior panels provide access to the keel beam and keelsons. These panels are securely attached to the structure of the door or panel and cannot be easily removed. They are designed to provide structural integrity and stability to the vessel's keel system. These fixed panels ensure that the keel beam and keelsons are protected and can be accessed for maintenance and inspection purposes. Removable panels, on the other hand, can be taken off easily, which may not be ideal for accessing and maintaining the keel system.

The correct answer is 75 J-seals and 17 form-in place seals. This means that there are a total of 92 seals used on the aircraft, with the majority being J-seals.

System 2 is used to actuate the nose and main landing gear in the hydraulic system.

The correct answer is FS--Fuselage station zero (FS 0.0), 169.77 inches forward of the IFB. BL--Buttock line zero (BL 0), the vertical centerline of the aircraft. WL--Waterline zero (WL 0.0), and is located 15 inches below the aircraft static ground plane. This means that the starting point for the fuselage station is located 169.77 inches forward of the IFB, the starting point for the buttock line is the vertical centerline of the aircraft, and the starting point for the waterline is located 15 inches below the aircraft static ground plane.