...E W PERCIVAL © Thomas Telford and ICE 1939 COMFORT TRAVEL AIR MACHINES FLYING PASSENGERS AEROPLANES AERODYNAMICS EFFICIENCY WEIGHT PHYSICAL NOISE VIBRATIONS ENGINES REDUCTION AIRSCREWS INSTRUMENTS CONSTRUCTION CABINS ABSORPTION WAVES SOUND VENTILATION HEATING LAYOUT...

... :- (l)absence of disturbing vibration ; (2) absence of disturbing noise ; (3) adequate heating and ventilation ; (4)adequate lighting. Absence of Disturbing Vibration.-Absenceof disturbing vibrations is probably the most important factor in determining the physical comfort of passengers, and although...

... © Thomas Telford and ICE 1938 DEPCOMNOIOPEMECPROVEH ENGINEERING RESEARCH NOISE OPERATION MECHANICAL PROPULSION VEHICLES CARS ENGINEERINGRESEARCH. 97 ENGINEERING RESEARCH. FINALREPORTOFTHE DEPARTMENTAL COMMITTEE ON NOISE INTHE OPERATION OF MECHANICALLY PROPELLEDVEHICLES.l...

... more uncomfortable than the front, and, in the same way, tyres, shock-absorbers, etc., could be studied. Noise again was a problem that had received increasing attention as designers became noise-conscious. Considerable improvement had been effected by insulation and damping, butthe following...