- 注册时间
- 2008-9-13
- 最后登录
- 1970-1-1
- 在线时间
- 0 小时
- 阅读权限
- 200
- 积分
- 0
- 帖子
- 24482
- 精华
- 4
- UID
- 9
  
|
|
TVOR very high frequency terminal omni range station. A K' G5 C) `8 f. A
TWR Tower (Control Tower) 9 j" R, g; Q7 p6 M6 ~( b, B
TYPE (1) As used with respect to the certification, ratings, privileges, and limitations of airmen, means a specific make and basic model of aircraft, incl... # l ?- {+ f! i# {
U Airspace Euro control project Class U (unknown traffic) 0 `$ D3 Y9 e% [' c
U/S unserviceable
; }6 Y# p2 k* r, oU/V ADF UHF/VHF Automatic Direction Finding 8 l. k( g& g$ Z3 G7 _
UAT Universal Access Transceiver
8 G- l K X( U: r: i+ oUAV Unmanned (or Uninhabited) Aeronautical (or Aerial) Vehicle
2 w u5 j& m& `7 [( h8 u5 w- zUFN Until Further Notice 3 h6 ]& ~0 y- y* X/ @
UFO Unidentified Flying Object & L6 w3 @% S& V- n
UHF Ultra High Frequencies (300 MHz-30 GHz) 8 w m* k4 u2 F( x, n8 m
UHF/VHF AUTOMATIC DIRECTIONFINDING (U/V ADF) An Automatic Direction Finder that determines relative bearing to a transmitter to which it is tuned, in either the UHF band or VHF band;
: A D: T/ G* ^# g [1 a/ P9 g/ WUL Ultra light, Ultra-l©ger motoris©
$ K5 ~& ~/ _( f% d zULM Ultra light, Ultra-l©ger motoris©
* K, B5 w( I: Z: \5 Q" qULTRALIGHT VEHICLE An aeronautical vehicle operated for sport or recreational purposes which does not require FAA registration, an airworthiness certificate, nor pilot c... 0 q t8 C4 b9 V+ g2 U7 j
UMAS Unmanaged Air Space (Euro control Definition) # W! \2 u$ M# P9 o& C! f0 `* \- b8 O' [
UNDER CAMBER This means that the lower surface of the wing has a hollow curve when observed from front to back. A thin wing with a high camber will be under camber...
) ]7 a8 P0 V" N( A+ `0 K! g+ q- oUNDERCARRIAGE STRUT A part of an airplane`s structure, designed to resist distortion, which supports the landing gear.
0 V* _7 q; X8 H9 o) l: \UNIT FUNCTIONS A collection of functions used as standard test cases in control systems engineering; The primary unit functions of interest in avionics are the unit ... 5 H! T" v- M5 B: `& o1 O9 {
UNIT IMPULSE A function used as a standard test case in control systems engineering; a spike of "area" one at time t = 0; Synonyms: impulse; See Also: unit functio... 1 E, @6 @' |; e, F0 `$ u" V
UNIT LESS No units, such as ratios; a quantity with standard units of 1; a quantity with primary units of 1; Synonyms: dimensionless; - Y% B. S* r1 n5 Q) P
UNIT RAMP A function used as a standard test case in control systems engineering; a line of slope 1 starting at zero at time t = 0; Synonyms: ramp; See Also: un...
% D! o" W# j7 D8 BUNIT STEP A function used as a standard test case in control systems engineering; a step from zero to one at time t = 0; Synonyms: step; See Also: unit function...
1 H. @) B! [/ O0 DUNITED STATES in a geographical sense, means (1) the States, the District of Columbia, Puerto Rico, and the possessions, including the territorial waters, and (2) t...
2 Z: }& J4 Z' VUNITED STATES AIR CARRIER a citizen of the United States who undertakes directly by lease, or other arrangement, to engage in air transportation.
* z7 i" f6 D: FUNITS A standard quantity, such as ft or mi; Synonyms: dimension;
% J+ f0 g4 ~5 C! bUNIVERSAL TRANSVERSE MERCATOR(UTM) A system of fixed earth coordinates, sometimes used instead of latitude and longitude, accurate relative to others close by, such as ground troops; : J# |: f. u, o9 R: Z% I4 T3 x
UPDATE A process by which position is reset with a known better position; updates occur at the data source level or at the physical device level, depending u... & x3 O$ t* C3 d$ m
UPKEEP Codename for Barnes Wallis` bouncing bomb used in the Dambusters` raid ) n( M! n) {, W+ L2 u# X
URB User Relations Bureau (CFMU) ; V8 i5 B( W0 p% Q8 b$ Z2 {
USABLE FUEL (LBS) Usable fuel (gallons) x 6.7 lbs/gallon 2 Q8 o0 e5 T4 z e+ D! k
USAF US Air Force
5 e9 \3 S, G- WUSEFUL LOAD Maximum Ramp Weight - (minus) Basic Operating Weight
& m4 O. w1 N; s( C, l0 g1 @USG (AL) US-Gallon (3.78 Liter) # W0 Q/ z7 |1 r3 _9 o5 o
UTC Universal Coordinated Time. ) V. F V- H% q
UTM Universal Transverse Mercator
# x3 {7 P q. l: p4 G5 ]V Universal Time Coordinated |
|