28:
41:
369:
50:
345:. It is usual for gliders to be equipped with more than one type of variometer. The simpler type does not need an external source of power and can therefore be relied upon to function regardless of whether a battery or power source has been fitted. The electronic type with audio needs a power source to be operative during the flight. The instrument is of little interest during launching and landing, with the exception of
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allows pilots to maximize altitude gain per time. This occurs at the speed where the difference between engine power and the power required to overcome the aircraft's drag is greatest (maximum excess power).
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Rate of climb at maximum power for a small aircraft is typically specified in its normal operating procedures but for large jet airliners it is usually mentioned in emergency operating procedures.
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298:– also known as a rate of climb and descent indicator (RCDI), rate-of-climb indicator, vertical speed indicator (VSI), or vertical velocity indicator (VVI) – is one of the
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is the indicated airspeed for best rate of climb, a rate which allows the aircraft to climb to a specified altitude in the minimum amount of
337:, the pilot makes frequent use of the VSI to ascertain that level flight is being maintained, especially during turning maneuvers. In
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allows pilots to maximize altitude gain per horizontal distance. This occurs at the speed for which the difference between thrust and
326:(1 kn ≈ 0.514 m/s), depending on country and type of aircraft. It is typically connected to the aircraft's external
341:, the instrument is used almost continuously during normal flight, often with an audible output, to inform the pilot of
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221:). In a jet airplane, this is approximately minimum drag speed, occurring at the bottom of the drag vs. speed curve.
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regardless of the horizontal distance required. Except at the aircraft's ceiling, where they are equal,
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member countries, even in otherwise metric countries, this is usually expressed in feet per
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174:. This is the speed at which an aircraft gains the most altitude in a given horizontal
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135:. A negative rate of climb corresponds to a positive rate of descent: RoD = −RoC.
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relating to optimum rates of ascent, the two most important of these are
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providing a rate of climb of 721 ft/min (3.66 m/s).
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decreases with altitude until they converge at the airplane's
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108:(ft/min); elsewhere, it is commonly expressed in metres per
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for civil airplanes, to give optimal rate of climb (right)
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http://people.clarkson.edu/~pmarzocc/AE429/AE-429-10.pdf
116:(VSI) or instantaneous vertical speed indicator (IVSI).
364:, showing vertical speed in feet per minute (ft/min).
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Best Rate of Climb for a jet and a propeller aircraft
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is a four-seat aircraft. At maximum weight it has a
112:(m/s). The RoC in an aircraft is indicated with a
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123:of decrease in altitude is referred to as the
31:Best Rate of Climb as a function of altitude
170:is the indicated forward airspeed for best
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360:. This is the most common type used in
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18:
16:Aircraft vertical velocity during flight
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322:(1 ft/min = 0.00508 m/s) or
100:change with respect to time. In most
356:The vertical speed indicator from a
487:"Cessna 172 at a Glance Flashcards"
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14:
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517:, Skyhorse Publishing Inc., 2007
282:This section is an excerpt from
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39:
511:Federal Aviation Administration
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372:Diaphragm Variometer operation
266:of 75 kn (139 km/h)
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241:increases with altitude and
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314:. It can be calibrated in
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217:is the greatest (maximum
491:www.flashcardmachine.com
312:rate of descent or climb
114:vertical speed indicator
74:, climbing with typical
139:Speed and rate of climb
62:climbing and releasing
515:Glider Flying Handbook
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143:There are a number of
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547:Aircraft aerodynamics
542:Aerospace engineering
395:Descent (aeronautics)
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343:rising or sinking air
196:is always lower than
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145:designated airspeeds
390:Climb (aeronautics)
306:used to inform the
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300:flight instruments
268:indicated airspeed
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525:pages 4-7 and 4-8
316:metres per second
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456:on 19 March 2012
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426:. 4 October 2011
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250:absolute ceiling
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320:feet per minute
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66:(left) and a
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494:. Retrieved
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458:. Retrieved
454:the original
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428:. Retrieved
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358:Robinson R22
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224:Climbing at
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420:"Vx vs. Vy"
86:aeronautics
536:Categories
446:"FAR §1.2"
406:References
296:variometer
284:Variometer
277:Variometer
257:Cessna 172
68:Boeing 737
60:F-15 Eagle
133:sink rate
72:Enter Air
496:16 March
460:16 March
430:16 March
400:V speeds
379:See also
362:aircraft
330:source.
304:aircraft
292:aviation
176:distance
98:altitude
347:aerotow
339:gliding
310:of the
521:
302:in an
110:second
106:minute
88:, the
64:flares
324:knots
308:pilot
131:) or
70:from
519:ISBN
498:2018
462:2018
432:2018
294:, a
255:The
215:drag
187:time
154:and
119:The
102:ICAO
333:In
290:In
129:RoD
94:RoC
84:In
58:An
538::
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448:.
422:.
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500:.
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286:.
263:Y
261:V
245:Y
243:V
238:x
236:V
228:Y
226:V
210:X
208:V
200:Y
198:V
193:X
191:V
182:Y
180:V
167:X
165:V
158:Y
156:V
151:X
149:V
127:(
92:(
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