# Question: What Does V1 VR And V2 Mean?

## Why does v1 increase with weight?

Since VR and V2 are directly related to weight, for an average runway, V1 will also be higher as weight increases since acceleration and deceleration are both a function of weight..

## What is VEF speed?

The speed where the engine is assumed to fail is called VEF. The criteria applied for this is “that the assumed engine failure speed is the demonstrated time to recognise the engine failure and take the first action to stop the aeroplane at V1 OR a minimum of 1 second before V1.

## What does squawk 7777 mean?

§ military interception§ military interception (US) (“Under no circumstances should a pilot of a civil aircraft operate the transponder on Code 7777. This code is reserved for military interceptor operations.”) § non-discrete code used by fixed test transponders (RABMs) to check correctness of radar stations (BITE).

## What do pilots say before taking off?

ATC will either say “Expedite Departure” or “No Delay” to let the aircraft know to get it in gear and take off immediately. A radio call from ATC would go something like this: ATC: “Cessna 128DP, cleared for take off, runway 16, no delay, straight out departure approved”

## What does v1 mean in aviation?

critical engine failure speedDefinition. V1 is the Decision speed (sometimes referred to as critical engine speed or critical engine failure speed) by which any decision to reject a takeoff must be made. Above V1, the takeoff must be continued unless there is reason to believe that the aircraft will not fly.

## Can VR be less than v1?

No. V1 can be equal to Vr, but not greater than it.

## How is v2 calculated?

V2 is closely tied to the rotate speed. If you suffer an engine failure at V1 (which is at some point in the take-off roll and is the worst time to have an engine failure) and then rotate at the correct rotate speed, you will achieve V2 by 35′. The rotate speed is selected so that this will happen.

## Why do pilots say heavy?

In the United States, the term heavy is used during radio transmissions between air traffic control and any aircraft which has been assigned a maximum takeoff weight (MTOW) rating of 136 tonnes (300,000 lb) or more. All aircraft produce wingtip vortices that create wake turbulence in flight. …

## Do pilots die younger?

One from 1992, for Flight Safety Digest – a former publication of the US-based Flight Safety Foundation – concluded that pilots do die at a younger age than the general population, based on two main data sources. … The study lists “physical and emotional” stressors that are thought to affect airline pilots’ health.

## Why do pilots say contact?

After the propeller is pulled through several revolutions, the crewmember would pause and indicate the engine was ready to start. The pilot would respond by shouting “contact” as he switched the magneto switch to both and moved the mixture to full rich.

## Why do pilots say Niner?

The reason for these somewhat strange pronunciations is to encourage the pilot/controller to enunciate clearly, so that the numbers are clearly understood. … The reason for “Niner” is that “Nine” can be easily muffled, slurred, or confused with other words (particularly the number Five/Fife).

## What is v2 speed?

A: V1 is the speed by which time the decision to continue flight if an engine fails has been made. … V2 is the speed at which the airplane will climb in the event of an engine failure. It is known as the takeoff safety speed.

## What do pilots say when landing?

To indicate the landing clearance or final approach, the Captain will either make the following announcement and/or blink the No Smoking sign. “Flight attendants, prepare for landing please.” “Cabin crew, please take your seats for landing.” It may be followed by an announcement by a flight attendant.

## What is VMBE?

The maximum brake energy speed. It is a function of the gross weight, altitude, temperature, runway slope, wind component, and braking configuration.

## Why do pilots say v1 rotate?

Pilots say rotate because it is a verbal queue that an airplane has reached its predetermined rotation speed (frequently abbreviated to Vr). This is the speed at which control inputs can be applied to lift the nose off the runway and make the airplane fly away.

## Can pilots read while flying?

Pilots are permitted to read newspapers during the flight in the cockpit. That’s because newspapers contain many short articles and the pilot won’t be distracted for a long period of time.

## What does 3 stripes on a pilot mean?

Epaulets and Stripes Depending on the airline, two, three or four stripes are shown on a pilots’ shoulders. A flight engineer or second officer wears two stripes, a first officer wears three stripes on their pilot uniform and a captain normally wears four.

## How do pilots eject from Jets?

The modern ejection seat is a complex, two-part system. There’s an ejection gun, which the pilot activates by pulling a handle and that gets the seat moving up out of the aeroplane. Once the seat travels a metre or two up, the secondary device kicks off.

## What is the takeoff speed of an a320?

AircraftTakeoff WeightTakeoff SpeedBoeing 737100,000 lb 45,360 kg150 mph 250 km/h 130 ktsBoeing 757240,000 lb 108,860 kg160 mph 260 km/h 140 ktsAirbus A320155,000 lb 70,305 kg170 mph 275 km/h 150 ktsAirbus A340571,000 lb 259,000 kg180 mph 290 km/h 155 kts2 more rows

## What affects v1 speed?

Airport elevation, the existence of any slope on the runway, and the presence of precipitation or ice also play a role. Temperature and wind speed are also factors, as are configuration of the airplane. The bigger the airplane, the higher V1 will be, since the airspeed depends on weight.

## What does Niner Niner mean?

“Tree,” “fife” and “niner” Aviators often speak “pilot English” to avoid miscommunications over radio transmission. “Tree” for instance, means three, “fife” is the number five and “niner” means nine, says Tom Zecha, a manager at AOPA.