- 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. ! v* `9 t& K w
TWR Tower (Control Tower) 7 ~, F7 O0 f/ K0 D
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... ) u; f# j, X/ Q2 X) e( @
U Airspace Euro control project Class U (unknown traffic)
& V0 U; R; R% @U/S unserviceable 2 O3 W+ N- n- Q2 k# _& E
U/V ADF UHF/VHF Automatic Direction Finding 1 d Y; X2 ?$ O/ P$ i& V% Y
UAT Universal Access Transceiver ( W3 q: Y {- }4 n( h! e! p
UAV Unmanned (or Uninhabited) Aeronautical (or Aerial) Vehicle , V z- a% w0 \* A, z* u; I* R3 M8 ]
UFN Until Further Notice
. A& J7 G7 b, [6 oUFO Unidentified Flying Object
9 O6 `# L" o& S# F$ s1 S* [UHF Ultra High Frequencies (300 MHz-30 GHz) 2 C7 y# U$ m! ~3 I" b! } K9 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;
' t& p u( u; iUL Ultra light, Ultra-l©ger motoris© 0 |5 g6 r6 f5 _
ULM Ultra light, Ultra-l©ger motoris©
$ l6 i# X+ k, H# M7 ^: iULTRALIGHT VEHICLE An aeronautical vehicle operated for sport or recreational purposes which does not require FAA registration, an airworthiness certificate, nor pilot c... $ l ], N5 S0 l9 d$ v5 ^7 d
UMAS Unmanaged Air Space (Euro control Definition)
5 H2 p5 T4 M% ~0 r- s6 }/ N1 ^: w7 ~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...
2 o: a3 [5 C6 Y2 uUNDERCARRIAGE STRUT A part of an airplane`s structure, designed to resist distortion, which supports the landing gear. & X; ?& q. `, y0 k+ o4 \
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 ... * j& G' z* U$ w$ ?+ w( ~3 W1 @
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... & M' V$ w6 M- q' Z. O) b" g( l
UNIT LESS No units, such as ratios; a quantity with standard units of 1; a quantity with primary units of 1; Synonyms: dimensionless;
1 A+ G* t) G. s9 ?/ E: R t# A8 B3 iUNIT 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... * x* V* p# {, L
UNIT 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...
* P1 V! g) o2 Q, i, M# i% X1 gUNITED 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... + @; v7 |, U5 r: o5 n7 F: E
UNITED STATES AIR CARRIER a citizen of the United States who undertakes directly by lease, or other arrangement, to engage in air transportation.
3 S' U/ v0 s' i% VUNITS A standard quantity, such as ft or mi; Synonyms: dimension; : j: g. a/ S5 L' Q* d+ ^0 l
UNIVERSAL 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;
4 P0 p) ^$ B A0 u* uUPDATE 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... 1 \& @8 m) d* @* W) B6 J
UPKEEP Codename for Barnes Wallis` bouncing bomb used in the Dambusters` raid
" t& f' l6 j/ d+ P9 w4 ?URB User Relations Bureau (CFMU) ' s/ t: l! q4 e# x/ `
USABLE FUEL (LBS) Usable fuel (gallons) x 6.7 lbs/gallon $ }( I, I5 f* z0 F+ t9 e1 K! {$ b8 \
USAF US Air Force
7 Z! A4 ] s, A8 VUSEFUL LOAD Maximum Ramp Weight - (minus) Basic Operating Weight . S7 p" a3 p/ P# U; q9 `$ T
USG (AL) US-Gallon (3.78 Liter) 1 ?5 R1 e O; @- c: W
UTC Universal Coordinated Time. ! w6 J) _9 @' _5 ~% I3 o
UTM Universal Transverse Mercator % k! o" Y/ Y7 t* U
V Universal Time Coordinated |
|