- 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.
8 i9 l6 v N& F& [4 [ _TWR Tower (Control Tower) 4 u* q% e. k! I( g0 @5 e: M# c9 V
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...
- D8 r# \% T, s: h% ^U Airspace Euro control project Class U (unknown traffic)
4 p! r! z& ?5 v( c) yU/S unserviceable / a' I6 N- X6 y, B; p @ N# F
U/V ADF UHF/VHF Automatic Direction Finding ' U# z0 j( g, u) L
UAT Universal Access Transceiver # Y9 a' t. D) a- S* p4 b2 U; e" w
UAV Unmanned (or Uninhabited) Aeronautical (or Aerial) Vehicle & s. q: D- _8 E
UFN Until Further Notice
+ f* Z, N2 e( ^+ r5 mUFO Unidentified Flying Object
# x& V: z+ Y+ C5 F# i9 ~UHF Ultra High Frequencies (300 MHz-30 GHz)
0 q4 B* q3 |& V: Q( aUHF/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; 9 W3 o, i2 [ v' E, ?* J2 `& E
UL Ultra light, Ultra-l©ger motoris©
# M" [: v( Z8 s" z2 cULM Ultra light, Ultra-l©ger motoris©
2 e+ y. u- }5 n9 ]# xULTRALIGHT VEHICLE An aeronautical vehicle operated for sport or recreational purposes which does not require FAA registration, an airworthiness certificate, nor pilot c...
! O0 ?6 i, l. ^: {2 q0 Z$ `UMAS Unmanaged Air Space (Euro control Definition)
& g9 T' E" [0 k4 f6 T; Q7 ZUNDER 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... % F& E3 l O" E' ?( b9 }
UNDERCARRIAGE STRUT A part of an airplane`s structure, designed to resist distortion, which supports the landing gear. , N; Q, G( }6 @; `
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 \, A) d! w0 x: s
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...
/ O4 N( s- u8 h# z% h7 X" b" b8 E$ s$ CUNIT LESS No units, such as ratios; a quantity with standard units of 1; a quantity with primary units of 1; Synonyms: dimensionless;
6 _6 Y2 o8 z% [& bUNIT 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...
* v! \0 _ H+ ]' }* QUNIT 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... ; f8 V9 w' u* |6 M
UNITED 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...
5 C; X. X% S2 U& g, j% M( R0 k5 JUNITED STATES AIR CARRIER a citizen of the United States who undertakes directly by lease, or other arrangement, to engage in air transportation. * K' h" ?2 Q' c( z. ^
UNITS A standard quantity, such as ft or mi; Synonyms: dimension; & m5 X- w/ F& L' [7 ?
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; $ [2 f* F7 I+ Y& U6 A) o6 _
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... 7 C8 k) @: B; i
UPKEEP Codename for Barnes Wallis` bouncing bomb used in the Dambusters` raid
7 p0 o& w' A9 R2 K d: |URB User Relations Bureau (CFMU) y$ l( }6 `* j% A
USABLE FUEL (LBS) Usable fuel (gallons) x 6.7 lbs/gallon $ `. d! u3 O" B1 {+ Y H5 i
USAF US Air Force 6 F7 o* f& ^- P, u. i- [: e9 r" N
USEFUL LOAD Maximum Ramp Weight - (minus) Basic Operating Weight
6 C" z; b9 x* Y( [8 sUSG (AL) US-Gallon (3.78 Liter)
! O4 J( ?+ Y0 d7 @+ {UTC Universal Coordinated Time. - j* i! |+ R0 g; m( N( }4 ` i
UTM Universal Transverse Mercator
: o6 e' Z/ q+ y0 P/ R# \& aV Universal Time Coordinated |
|