Positive Rate?

[Rickie Welsh 27]

Hello,  I have not given any thought to this question of Positive Rate although in watching Aviation videos the Positive Rate is always featured, which begs the question why didn't Captain Randazzo, being a man of detail, not incorporate this into the FMC/Simulation/Call outs.. just a thought.

[Captain Kevin 586]

6 minutes ago, richard welsh said:

Hello,  I have not given any thought to this question of Positive Rate although in watching Aviation videos the Positive Rate is always featured, which begs the question why didn't Captain Randazzo, being a man of detail, not incorporate this into the FMC/Simulation/Call outs.. just a thought.

It's there. The question is why aren't you getting it. Start from 10:27.

 

[pcubine 143]

A ten course dinner out of a simple meal.

[JRBarrett 3,038]

1 hour ago, Qavion2 said:

And on 737s, 767s, 747-400s, 777 and (all but 1 type of) Classic 747. Airbus seem to have a preference for putting them behind the gear.

They're all calibrated for a certain pitch angle, gear strut extension, bogey tilt, etc. On the 777, they're not far behind the nose gear. On the 747-400, they're just behind the second cabin door. I see some advantage in having them relatively close to the gear, but given a choice of in front or behind, I'd rather have an early warning that my nose was going to touch down before my tail

Cheers

 

P.S. And 787

Yes, there are a variety of places to mount the RA antennas, and a variety of ways to set the "zero" point. On a Gulfstream 4xx / 5xx series, the antennas are forward of the gear, about halfway between the leading edge of the wing and the main entrance door, and are calibrated to read negative 5 feet on the ground. The aircraft typically lands in a distinctly nose-up attitude, and the main gear struts extend almost 2 feet longer in flight than they do when compressed on landing. The combination means that the RAs will read zero on touchdown, as they are then typically 5 feet higher at that moment than they would be once the aircraft is fully on the ground.

On a Dassault Facon 900, the antennas are are farther back toward the wings, and they are calibrated to read zero on the ground, since they usually land in a flatter attitude.

I just asked one of our pilots what their SOP is for "positive rate", and they agree with the other posters here - a combination of a climb indication on the VSI, along with an increasing altitude reading on the altimeter.

[Rickie Welsh 27]

Hi All, Sorry, I should have been more specific, I should have mentioned the aircraft. 737NGX

[ahsmatt7 1,199]

6 hours ago, pcubine said:

A ten course dinner out of a simple meal.

couldn't have said it better myself. Par for the course with flightsim forums I suppose.

[Captain Kevin 586]

24 minutes ago, richard welsh said:

Hi All, Sorry, I should have been more specific, I should have mentioned the aircraft. 737NGX

Can't help you there, except to say that the Boeing 747-400 V1 for FS9 did not have the callout, either.

[pcubine 143]

No "Positive Rate" callout in the T7. 

[Captain Kevin 586]

In that case, must have been something new they implemented in the new Boeing 747-400. Interesting.

[AirbusCG 52]

The positive rate callout came in new with the new Queen. It was not featured on the "older" (heck, am I that old already?) PMDGs like the NGX.

But isn't it always the same? With every new release PMDG brings in something new where, after you got accustomed to it, you wonder how you could ever have flown without it?
That's certainly how it feels for me, for example with the CRT screens in the new 747!

[ahsmatt7 1,199]

10 hours ago, Emi said:

The positive rate callout came in new with the new Queen. It was not featured on the "older" (heck, am I that old already?) PMDGs like the NGX.

But isn't it always the same? With every new release PMDG brings in something new where, after you got accustomed to it, you wonder how you could ever have flown without it?
That's certainly how it feels for me, for example with the CRT screens in the new 747!

speaking of those crt screens, dive through Google and these forums and go look at the early previews that were shown. The crt screens look terrible compared to the finished product.

IIt's crazy how much they changed between then and now.

[G7USL 117]

On 23/03/2017 at 2:12 PM, Captain Kevin said:

It's there. The question is why aren't you getting it. Start from 10:27.

 

10.27 where?

[Captain Kevin 586]

37 minutes ago, G7USL said:

10.27 where?

10 minutes 27 seconds into the video. Start there, you'll hear the call-out.

[G7USL 117]

1 hour ago, Captain Kevin said:

10 minutes 27 seconds into the video. Start there, you'll hear the call-out.

I didn't realise it was a video. Does it work with the NGX?

 

[Captain Kevin 586]

14 minutes ago, G7USL said:

I didn't realise it was a video. Does it work with the NGX?

I don't own it, so I couldn't tell you, but from reading previous posts, it appears as though this call-out didn't exist until the Boeing 747-400 V3 came out.