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external air tappingsengines vary as to the number of external air tappings and their usage the following notes are taken from the pratt and whitney
fuel properties of aircraftease of flowthe ease of flow of a fuel is mainly a question of viscosity but impurities such as ice dust wax etc may cause
gas turbine fuel properties and specificationin the earliest days of the gas turbine engine kerosene was regarded as the most suitable fuel it
combustion sectionthe combustion chamber has the difficult task of burning large quantities of fuel supplied through the fuel burners with extensive
application to the axial flow compressorin order for the compressor to deliver a high mass airflow for a minimum effort required to drive it it is
compressor stall and surgelsquosurge can occur in both centrifugal and axial flow compressors and is the reversal of the airflow in the compressor
ideal intake conditionsfor air to flow smoothly through a compressor its velocity should be about 05 mach at the compressor inlet this includes
equivalent shaft horsepower ehpin practice there is always a certain amount of jet thrust in the total output of the turbo-propeller engine and this
choked nozzleconsidering the formula for thrust under quotchokedquot nozzle conditions thrust p-p0 a wvj g where p pressure p
thrust calculationthe amount of thrust produced depends upon two things-the mass of air which is moved rearwards in a given time the acceleration
principles of jet propulsionnewtons laws of motion to understand the basic principles of jet propulsion it is necessary to understand the practical
reliability design scientifically allocate the reliability for the target product and subsystems all the way down to their component and partsconduct
the pn junction region of the junction diode has the following significant characteristicssemiconductors contain two types of mobile charge carriers
n-type for example add antimonythe are materials which have pentavalent impurity atoms donors added and conduct by the electron movement and are
questiwrite a program to find the area under the curve y fx between x a and x b integrate y fx between the limits of a and b the area under a
cold junction compensationa recent solution to the problem of controlling a reference junction temperature is to use a cold-junction compensator this
uncertainty propagationin order to calculate the error of a quantity derived from a mathematical formula which has measured variables with errors
factors affecting accuracy1 the transducer must be located in an appropriate place and with an appropriate orientation to measure the measurand
analog digital converter analog digital converter digitises the conditioned signal and presents it in a digital form which is more convenient
signal conditioning amplifierthe primary function of the signal conditioning amplifier is to match the output signal range of the transducer to
trade-offs in communications designssatellite and deep space communications - power is expensive to generate in
nomenclaturebull information source device producing information to be communicatedbull binary digit bit fundamental information unit for all digital
engineering signalsa signal is a variation of a measurable quantity that conveys information about the behaviour of a systembull a signal can depend
safe operating range the sor is the max distance between airfields which the aircraft can fly with full allowance for headwind diversion stacking