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cdc 2A551

Aerospace Ground Equipment and ACFT Systems volume 2

the maintenance stand with an adjustable height of 13 to 20 feet is the B-2
of the following, the maintenance stand that is scissor type is the B-4
the type of jack normally used to change the tire on the acft is the axle
the boiling point of lox is -297F
the low and high pressue capabilities as measured in pounds per square inch of the NSU-L75 nitrogen servicing unit are 0-350; 350-3600
the high pressure pump provides a hydrualic filler pressurization unit with max pressure of 3000psi
the model 4000 engine trailer can support a max load of 8000 lbs
the usable pressure range as measured in psi of the MC-1A air compressor is 0-3200
the MC-2A air compressor is capable of delivering air at max pressure measured in psi of 200
the H-1 heater has an adjustable heat output that ranges from 150F to 280 F
the stationary skid mounted power unit that produces acft electrical power for use in shops and hangers is the MD-4
the unit capable of providing both AC and DC electrical power in addition to pneumatic power for ground maintenance is the A/M32A-60
the hydraulic systems on the MK-3A-1 hydraulic test stand are designated no. 1 and no. 2
the amount of fluid the MJ-2A reservoir holds is 27 gallons
a class I MB-2 tractor weighs 40000 lbs
the structural members whose chief use is to give shape to the acft and provides a means for attaching the skin to the structure are called stringers
the most common type of matierial used for fuselage construction is aluminum alloy
the wing components that provide strength and contour shape to the wing are the ribs
the main difference between inspection plates and panels is size
a cracked radome could cause microwave distortion
the reference locations which are in the vertical direction measured from a reference datum that usually well below the acft are called waterlines
the category of -21 equipment used for life support and crew comfort is III
the effective range of a fully charged handheld fire extinguisher is 20 ft
the first practical laminated composite formed was plywood
a barometer is designed to measure pressure in inches of mercury
atmospheric pressure at sea level is 14.7 psi
the force that acts parallel to the relative wind is drag
the axis that extends lengthwise through the fuselage from the nose to the tail is the longitudinal
the axis that extends crosswise from wing tip to wing tip is the lateral
movement about the vertical axis is called yaw
the flight control located on the longitudinal control surface is the elevator
the type of flight control system that allows the pilot to control the acft if hydraulic pressure is lost is manual
when making a right turn the relative position of the ailerons is the right aileron up, left aileron down
the flight control surfaces used to make an acft climb or dive are elevators
the type of flap normally incorporated on bomber and cargo type acft is fowler
acft have a trim systems to correct minor deviations in flight attitude.
the law that states "the distortion of any elastic body is proportional to the distorting force" is known as hook's law
when any force causes a solid to change permanently, the solid is said to have passed the elastic limite
the most outstanding characteristic of a liquid is its ability to conform to the shape of its container
pascal's law applies to confined fluids at rest
among the first to study the compressability of gases was Boyle
the person who found all gases expand and contract in direct proportion to the change in temp provided the pressure remains constant was Charles
if 50 psi of cylinder pressure acts on 5-square-inch piston head the resulting forse will be 250 lbs
when an 8 sq inch piston moves 5 inches within a cylinder, the volume of liquid displaced will be 40 cubic inches
the principle which states that as the velocity of a gas or liquid increases, pressure decreases is Bernoulli's
as fluid enters the narror portion of a venturi it accelerates
when referring to hydraulic hand pumps, double-action means fluid-flow is created with every other stroke of the pump handle
variable-volume pumps do not require a separate pressure regulating device in the system because they have an integral compensator
cooler operation in a variable-volume hydraulic pump is provided by creep plates
in the Stratopower variable-volume pump, the psitons are held in contact wiht the cam plate by the nutating plate
an accumulator's piston is installed with the hollow end toward the air side of the accumulator
the size fo one micron is four millionths of an inch
if a filter is rated at 10 microns nominal, it may allow some particles 10 microns or larger to get through
hydraulic manifolds are used in a hydraulic system to provide a location where the common fluid lines can come together
the pneudraulic system components that uses single-acting actuating cylinder is the brake assembly
what pneudraulic system components uses a double-acting balanced actuating cylinder nose wheel steering
some acft manufacturers use the term "power control cylinders" when referring to tandem actuators
the pressure at which the relief valve ball is slightly unseated is called the cracking pressure
the major advantage of the manual slide-type hydraulic selector valve is its metering ability
the main difference between a selector valve and a servo valve is the servo valve is electrically operated
the purpose of a hydrualic system check valve is to allow flow in only one direction
another name for a flapper check valve is gate check valve
allowing normal operating speed of a hydraulic actuator in one direction while limiting speed in the other direction is done by the restrictor check valve
the four major sections of a basic hydraulic system are supply, pressure, return, and auxiliary
the basic units of a hydraulic hand pump system are the reservoir, pump, actuator, and manuual shutoff valve
the reservoir supplies hydraulic fluid to the hand pump by gravity and suction effect of the pump
a relief valve is installed in a varaible-volume hydraulic pump to relieve pressure if the pump compensator fails
in most hydraulic subsystems, the actuating units are connected in parallel
the shock strut component that controls the rate of fluid flow through the orifice is the metering pin
the purpose of the torsion links on a main landing gear prevent the inner cylinder from rotating within the outer cylinder
the motion of the landing gear control lever is transmitted to the selector valve by a cable system
landing gear safety switches are actuated by torsion links
the two most common types of shimmy dampers used in nose wheel steering are piston and vane
the purpose of air brakes are retard motion using friction
the purpose of deboosters is to reduce braking pressure
the two types of emergency brake systems are hydraulic and electric
the purpose of the antiskid system is to prevent wheel skid by releasing pressure from the skidding wheel
split wheels are balanced individually by halves
an airtight seal is maintained between split wheel halves by use of o-ring seal
the type of bearings used on a acft wheels is tapered roller
the bearing cone of an acft wheel bearing is also called the inner race
the kinds of pitting that affects bearings are corrosive and mechanical
the two types of brinelling are true and false
an acft tire's max recommended static load is called ply rating
the term "ply rating" refers to index of tire casing strength
for tires 24 inches or greater outside diameter, the tire shall be removed when wear reaches the bottom of any tread groove for a continuous length of 12 inches
mater is any substance that has mass and occupies space
atoms are made up of protons, neutrons, and electrons
electrons can be released from their outer orbit by all of the following forces except cold
the greater the current flow through an electromagnet the greater the strength
to determine the direction a current carrying conductor will move in a magnetic field you should use left-hand rule for coils
current that periodically reverses is called alternating
the term used to express a condition in which two moving objects are changing in or out of step is phase
the methods used to cool brushless alternating current generators are engine oil and blast air
the underspeed switch USS on the 60/80 kilovolt amper generator constant speed drive (CSD) actuates at 365 Hz
the internal component of a battery that is a grid or framework which supports the active chemicals materials is the plate
a 24 volt nickel cadium battery has 19 cells
the component designed to convert 115/220 AC power into 28 volts or less DC to operate acft DC systems is the transformer-rectifier
when measuring resistnace on a multimeter, the letters OL indicate infinity
The nickel-cadmium battery electrolyte will appear to be low when the cells are partially discharged
Created by: dantruo



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