Search results
Results from the WOW.Com Content Network
In aviation, ceiling is a measurement of the height of the base of the lowest clouds (not to be confused with cloud base which has a specific definition) ...
Planform view of an Air Tahiti Nui 787-9 showing its 9.6 wing aspect ratio and 32° wing sweep Front view of a Vietnam Airlines 787-10, the fuselage is 19 ft (5.8 m) wide and 19 + 1 ⁄ 2 ft (5.94 m) high while the fan has a 9.3 ft (2.8 m) diameter
Most commercial jetliners have a service (or certified) ceiling of under 45,000 ft (13,700 m) [3] and some business jets about 51,000 ft (15.5 km; 9.7 mi). [4] Before its retirement, the Concorde supersonic transport (SST) (as well as the Tupolev Tu-144 before it was retired) routinely flew at 60,000 ft (18.3 km; 11.4 mi).
The General Electric GE90-115B of the earlier 777-200LR and -300ER variants has a 42:1 overall pressure ratio and 23:1 HP compressor ratio. Rolls-Royce Plc proposed its RB3025 concept with a 132 in (335 cm) fan diameter, a 12:1 bypass ratio, and a 62:1 overall pressure ratio, targeting a fuel burn of more than 10% lower than the GE90-115B and 15% lower than its Trent 800 powering the 777; the ...
The height of the cloud base can be measured using a ceilometer. This device reflects a beam of light off the cloud base and then calculates its distance using either triangulation or travel time . Alternatively, the cloud base can be estimated from surface measurements of air temperature and humidity by calculating the lifted condensation level .
In aviation, atmospheric sciences and broadcasting, a height above ground level (AGL [1] or HAGL) is a height measured with respect to the underlying ground surface.This is as opposed to height above mean sea level (AMSL or HAMSL), height above ellipsoid (HAE, as reported by a GPS receiver), or height above average terrain (AAT or HAAT, in broadcast engineering).
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
A ceilometer is a device that uses a laser or other light source to determine the height of a cloud ceiling or cloud base. [1] Ceilometers can also be used to measure the aerosol concentration within the atmosphere. [2] A ceilometer that uses laser light is a type of atmospheric lidar (light detection and ranging) instrument. [3] [4]