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What angle are nozzles pointed straight down?


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Posted

Hey guys quick question what angle is it that point the nozzles straight down?

 

From my eyeballing it and testing by practicing take offs/hovers/vertical landings it seems to be roughly 80 degrees?

 

I couldnt find an exact number in the pocket guide thanks!

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Posted
I believe it's 82.

 

90 degrees is straight down, however the plane sits up on an 8 degree angle when on the ground and the center of mass when in the air means 82 degrees to hover.

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Posted (edited)
90 degrees is straight down, however the plane sits up on an 8 degree angle when on the ground and the center of mass when in the air means 82 degrees to hover.

 

It is actually 84 nozzle angle since the plane is 6 degrees pitch up when wheels on the ground. Hover stop is at 82 nozzle angle because the plane is at 8 degrees pitch up when hovering.

 

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Edited by Jansgi

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Posted

If it's moving backwards you can either raise the nose of the aircraft to stop the drift, or if you feel brave, vary the nozzle angle to suit. Nozzle angle will also affect lift, so you need to co-ordinate thrust too.

 

Nozzle angle isn't an exact science because there are factors like ship motion, and wind to factor in too.

 

The key is to go with what works, and forget the minutia. If it's drifting, wiggle one of the sticks or levers until it doesn't.

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Posted
I'm having problems with the Harrier flying backward at 82-84 degrees. Haven't been able to land on the amphib yet without crashing because of it.

 

thats because the ship is moving forward.... ypu are hovering over the water... but not the ship

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Posted

I watched the videos on Youtube of real pilot landing on a ship and his HUD shows 82 degrees. However; I'm not sure if the nozzle is actually pointing straight down, it is what he uses to land.

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Posted

"The key is to go with what works, and forget the minutia. If it's drifting, wiggle one of the sticks or levers until it doesn't."

 

I wish more people understood this about flying...

 

+REP dude :).

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Posted
I've had the ship at static, because the Harrier just slides off it when it's moving.

 

 

 

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Posted
"The key is to go with what works, and forget the minutia. If it's drifting, wiggle one of the sticks or levers until it doesn't."

 

I wish more people understood this about flying...

 

+REP dude :).

 

Yep, some muppets will tell you you have to fly on the instruments precisely and that it is death to do anything else, such as looking out the window....

 

First rule in flying is fly the plane, second rule is navigate, and third rule is communicate.... that's what they teach when teaching how to manage emergency situations for a reason.

Posted
The technical hover stop on the nozzle lever is 82° (81°-83° indicated), for hovering with the "Witches Hat" at 2° above the horizon.

 

While the Harrier sits at about 6.5° nose up on the ground, the engine datum is 1.5° to the fuselage datum for a grand total of 8°.

 

81° :music_whistling:

 

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Posted
81° :music_whistling:

 

 

There may be some differences between the RAF Harriers and the AV-8Bs, I'm going off the NATOPS on this one.

 

When the lever is moved aft to the hover stop the nozzles are set for hovering. The position of this stop gives a fuselage hovering attitude of about 6 1/2°; i.e., the nosewheel slightly higher than the main wheels.

 

The engine datum is at 1.5° to the fuselage datum. The nozzle angle for hovering is therefore 82° from the engine datum.

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