This updated second edition, written as a companion to "Flight Without Formulae", examines the mechanics and theory of flight and the various components of piston engine and turbine driven aircraft. It aims to explain simply, without mathematical jargon, how an aircraft flies. This second edition has been revised and covers new aspects of the technology in this field. It also has a new plate section which contains photographs of some engines still in the experimental stages of design. The book also contains 100 questions to aid student revision.

The need for thrust; forces on an aircraft in flight
propellers and jet propulsion
propellers, jets and rockets compared
source of thrust
efficient propulsion in a fluid
rockets
aerofoils
optimum angle of attack
propeller blades
variable pitch and constant speed propellers
feathering
reversible pitch propellers
blade tip speed
propeller reduction gears
number of blades required
contra rotating propellers
altitude effects
variable pitch and constant speed mechanisms
the engine cycles
the importance of compression
two strokes and four strokes
the practical four stroke engine
poppet valve mechanisms
sleeve valves
inertia of moving parts
balancing the reciprocating parts
torsional oscillations
turbojets
turboprops - an introduction
turbofans, ducted fans and by-pass engines - an introduction
the gas turbine cycle
the compression process
compression ratios and pressure ratios
the effect of altitude on engine power
the centrifugal supercharger
exhaust turbines
two-stage superchargers
compression in the gas turbine
compression by RAM
compressor intake losses
surging
compressor characteristics
the two-stage centrifugal compressor
axial compressors
compressor velocity diagrams
free vortex flow
constant reaction blades
stall and surge
starting the airflow
adjustable guide vanes
blow-off valves
two spool compressors
temperature effects
fuels and combusion
combustion in the piston engine
detonation and octane ratings
gas turbine fuels
supplying the fuel to the combustion chambers
induction
the simple carburettor
compensating devices
correction for altitude; icing
injectors
supplying the fuel to the gas turbine
combustion in the gas turbine
burners and combustion changers
power, power limitations and power boostings
transmission dynamometers
radial and in-line piston engines
expansion in the gas turbine
turbines
effect of free vortex flow on blade shape
limiting conditions at the turbine
radial flow turbines
jet pipes
boosting the thrust
adjustable jet pipe nozzles
turboprops
turbofans
thrust reversal
intakes
water/methanol injection
engine cooling
controls
supercharger controls
automatic boost control
controls for the aircraft turbine
limiting the speed; pressure control
anti-surge devices
temperature control
re-heat control
electrical fuel control systems
jet pipe temperature control
complete electrical control
control for a two spool engine with re-heat
propulsion controls for supersonic flight
conclusion.

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