The Art of the Helicopter John Watkinson - Karatunov.net
The Art of the Helicopter John Watkinson - Karatunov.net
The Art of the Helicopter John Watkinson - Karatunov.net
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384 Index<br />
HIGE (hover in ground effect), 323<br />
Hiller flybar system, 308–10<br />
swashplate arrangement, 309<br />
Hiller’s powerblades, 249<br />
History, 2–9<br />
gyroplanes, 2<br />
models for research, 8–9<br />
post World War II, 5–9<br />
pre World War II, 2–5<br />
turbine power, 7<br />
HOGE (hover out <strong>of</strong> ground effect), 72–3, 323, 330<br />
Hooke joint, 123–5<br />
Hooke’s Law, 25<br />
Hopping, 98<br />
Hovering:<br />
basic mechanism, 68–70<br />
cyclic control, 86–7<br />
and disc loading, 76<br />
hover in ground effect (HIGE), 323<br />
hover out <strong>of</strong> ground effect (HOGE), 72–3, 323,<br />
330<br />
hover stability, 346<br />
and power to weight ratio, 1<br />
hPa and bar, 33<br />
Hughes 300 helicopter, fuel system, 17–18<br />
Hughes 500 helicopter, 76<br />
pendular vibration absorbers, 110<br />
Hughes XH-17 flying crane, 249<br />
Hull see Fuselage/airframe<br />
Hull rocking resonance, 150<br />
Human visual system (HVS) and vibration, 107<br />
Humidity, and density altitude, 326<br />
HUMS (Health and Usage Monitoring Systems),<br />
257<br />
Hydraulic systems:<br />
about hydraulic systems, 20, 253–4<br />
failure and failure prevention, 254–5<br />
fully powered, 253, 254<br />
hydraulic power assisted ram, 302–3<br />
hydraulic pumps, 254<br />
JetRanger system, 255–6<br />
power assisted, 254<br />
Sikorsky CH-47, 256–7<br />
IAS (indicated air speed), 276<br />
Icing problems, carburettors, 210, 215–16<br />
IFR (instrument flight rules), 259, 324, 341<br />
Ignition systems, 201–4<br />
dual systems, 203–4<br />
mag<strong>net</strong>os, 201–3<br />
points and capacitor, 201–3<br />
testing, 203–4<br />
ILS (instrument landing system), 319–20<br />
Indicated air speed (IAS), 276<br />
Induced drag, 61, 63<br />
Induced velocity, 74<br />
Inflow and coning roll, 90–3<br />
Injection pumps, diesel engines, 216<br />
Instrument flight rules (IFRs), 259, 324, 341<br />
Instrument landing system (ILS), 319–20<br />
Instrumentation, flying and navigation:<br />
basic concepts, 20–1<br />
chasers, 277<br />
RRPM (rotor revolution per minute) meters,<br />
246–7<br />
see also Gyroscopic instruments; Mag<strong>net</strong>ic<br />
compasses; Pressure instruments<br />
Instrumentation, gasoline engines:<br />
cylinder head temperature (CHT), 214<br />
exhaust gas temperature (EGT), turbocharged<br />
machines, 215<br />
icing avoidance, 215–16<br />
manifold pressure gauge, 215<br />
oil pressure gauge, 215<br />
Instrumentation, transmission, 244–6<br />
gearbox chip detectors, 245<br />
gearbox temperature, 245<br />
gearbox torque meters, 245–6<br />
Instrumentation, turbine engines, 237<br />
Intercoolers, aeroDiesels, 216–17<br />
International Standard Atmosphere (ISA), 273–4,<br />
325–6<br />
Iso<strong>the</strong>rmal changes <strong>of</strong> a gas, 34–5<br />
JetRanger see Bell 206 JetRanger<br />
Kaman:<br />
Huskie synchropter, 13–15<br />
K-225, 7<br />
K-Max synchropter, 367–8<br />
Kamov contra-rotating rotors, 15<br />
pendular vibration absorbers, 110<br />
Lanchester exciter, 103–4<br />
Landing gear:<br />
ground resonance problems, 18<br />
oleos (oleo-pneumatic struts), 18<br />
types <strong>of</strong>, 18<br />
Laser gyroscopes, 54–5<br />
Lateral stability, 343, 344<br />
Lead lag see Drag/dragging<br />
Lift:<br />
coefficient <strong>of</strong> lift, 66–8<br />
creation and control, 61–5<br />
lift function harmonics, 98<br />
load factor, 67–8<br />
see also Airfoils; Collective control<br />
Lightning protection, 162<br />
Load factor, 67–8<br />
Lockheed AH-56, 159<br />
Lockheed Cheyenne gyrodyne, 10, 11, 97, 161, 354