The Aeronautical Journal, Volume 73Royal Aeronautical Society, 1969 - Aeronautics |
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Page 651
... ground results . Because of the rotational symmetry of the noise distribution we get conic sections as contours on the ground . In our example circles are obtained assuming that all jets are directed vertically downwards . Just before ...
... ground results . Because of the rotational symmetry of the noise distribution we get conic sections as contours on the ground . In our example circles are obtained assuming that all jets are directed vertically downwards . Just before ...
Page 718
... GROUND **** . 5 FT ABOVE GROUND 80 00 60 40 20 O 100 80 60 40 20 O ( SLIGHTLY HIGHER AT GROUND ) 40 60 80 100 Figure 12. Hovering flight . 5.3 . Hover Regime 346 VTOL sorties were made by the prototype ( Fig . 12 ) , during which the ...
... GROUND **** . 5 FT ABOVE GROUND 80 00 60 40 20 O 100 80 60 40 20 O ( SLIGHTLY HIGHER AT GROUND ) 40 60 80 100 Figure 12. Hovering flight . 5.3 . Hover Regime 346 VTOL sorties were made by the prototype ( Fig . 12 ) , during which the ...
Page 933
... ground clearance of these engines is much reduced in comparison with current installations and the ground vortex formed beneath the intake during ground running can be extremely potent in lifting ground debris into the intake . Ground ...
... ground clearance of these engines is much reduced in comparison with current installations and the ground vortex formed beneath the intake during ground running can be extremely potent in lifting ground debris into the intake . Ground ...
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Aero aerodynamic aerofoil Aeronautical Journal aeroplane air transport airline airport angle application associated Aviation blade boundary layer British BRITISH AIRCRAFT CORPORATION cargo CEng civil Civil Air Transport configuration conventional cost cross-coupling dynamic effect engine equipment fibres field Figure flight flow flying FRAeS fuselage future Harrier Hawker Siddeley Aviation helicopter hover Illustrated increase industry lecture lift lift-fan London Mach number man-powered flight mechanical ment methods military NASA TN noise level obtained operation organisation outer space paper passengers performance pilot plate polymers possible present problem programme propulsion ratio rotorcraft Royal Aeronautical Society Royal Air Force satellite shown in Fig speed STOL structure Sud Aviation supersonic tail rotor take-off technical techniques Technology temperature thrust tion traffic turbine V/STOL vector vehicle velocity VTOL weight Westland wing