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teamgrumman(at)yahoo.com
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 Posted: Thu Sep 20, 2012 6:31 pm Post subject: NACA Submerged inlet: AG5B |
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At all conditions, climb, dive, straight and level, left or right skid (yaw), the MAP registered approximately .1 inches below the pressure recorded from a port tapped into the static line.
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flyv35b(at)minetfiber.com
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| Posted: Fri Sep 21, 2012 5:34 am Post subject: NACA Submerged inlet: AG5B |
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On 9/20/2012 7:30 PM, Gary Vogt wrote:
| Quote: | At all conditions, climb, dive, straight and level, left or right skid
(yaw), the MAP registered approximately .1 inches below the pressure
recorded from a port tapped into the static line.
|
I gather you are talking about the MAP with the new NACA type inlet duct
for an AG5B? But, 0.1' MP is not even detectable on a typical MP gauge.
But if this is compared to a 0.5" of 1.0" is loss with the standard
inlet and air filter it is significant.
Explain further.
Cliff
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Discover
Joined: 26 Feb 2007
Posts: 429
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| Posted: Fri Sep 21, 2012 6:58 am Post subject: Re: NACA Submerged inlet: AG5B |
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Gary,
That's an incredibly good looking air intake for the AG5B. Sounds like it will give much more flow rate and pressure than the factory intake. The factory location is located in a high velocity slipstream and some have said it actually create pressures lower than static.
Seeing the 2 holes aft of the NACA lip I'm guessing that the factory filter box has been replaced? So how about some pics of what's inside the cowl?
What happened with having the induction intake on the left cooling air intake?
Too difficult and complicated to certify? Or? I would think it would provide more MP psi....
On my AG5B I experimented with the 70's AA5B Tiger intake location versus the AG5B intake location. I could switch from one to the other on the fly and noted 0.5 to 1" MP increase over the AG5B intake. Now I'm curious how that compares to a port in the static line....
Looks like another good job from the Aucountry skunkworks.
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teamgrumman(at)yahoo.com
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| Posted: Fri Sep 21, 2012 8:02 am Post subject: NACA Submerged inlet: AG5B |
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626 has two separate MAP sensors. One is connected to the engine, the other to the static system. The original inlet lost, on average, .8 inches of pressure over atmosphere (static). The original was only .5 inches low on takeoff, but as much as an inch low in straight and level fast cruise. The new inlet stays around .1 below static under all conditions. Worst condition was a really hard side slip, tail to the right: lost .2 inches. Best was side slip tail to the left: 0 inches lost.
From: flyv35b <flyv35b(at)minetfiber.com>
To: teamgrumman-list(at)matronics.com
Sent: Friday, September 21, 2012 6:33 AM
Subject: Re: NACA Submerged inlet: AG5B
--> TeamGrumman-List message posted by: flyv35b <flyv35b(at)minetfiber.com (flyv35b(at)minetfiber.com)>
On 9/20/2012 7:30 PM, Gary Vogt wrote:
| Quote: | At all conditions, climb, dive, straight and level, left or right skid
(yaw), the MAP registered approximately .1 inches below the pressure
recorded from a port tapped into the static line.
|
I gather you are talking about the MAP with the new NACA type inlet duct for an AG5B? But, 0.1' MP is not even detectable on a typical MP gauge. But if this is compared to a 0.5" of 1.0" is loss with the standard inlet and air filter it is significap; &n
[quote][b]
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teamgrumman(at)yahoo.com
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| Posted: Fri Sep 21, 2012 8:05 am Post subject: NACA Submerged inlet: AG5B |
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that's the prototype. The finished one is closed on the inside with the exception of a round hole for the filter.
From: discover <923te(at)att.net>
To: teamgrumman-list(at)matronics.com
Sent: Friday, September 21, 2012 7:58 AM
Subject: Re: NACA Submerged inlet: AG5B
--> TeamGrumman-List message posted by: "discover" <923te(at)att.net (923te(at)att.net)>
Gary,
That's an incredibly good looking air intake for the AG5B. Sounds like it will give much more flow rate and pressure than the factory intake. The factory location is located in a high velocity slipstream and some have said it actually create pressures lower than static.
Seeing the 2 holes aft of the NACA lip I'm guessing that the factory filter box has been replaced? So how about some pics of what's inside the cowl?
On my AG5B I experimented with the 70's AA5B Tiger intake location versus the AG5B intake location. I could switch from one to the other on the fly and noted 0.5 to 1" MP increase over the AG5B intake. Now I'm curious how that compares to a port in the static line....
Looks like another good job from the Aucountry skunkworks.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=383713#3= - The TeamGrumman-List Email Forum -<ribution sp; &
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teamgrumman(at)yahoo.com
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| Posted: Fri Sep 21, 2012 8:06 am Post subject: NACA Submerged inlet: AG5B |
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Ned, did you ever get the fairing I sent?
From: discover <923te(at)att.net>
To: teamgrumman-list(at)matronics.com
Sent: Friday, September 21, 2012 7:58 AM
Subject: Re: NACA Submerged inlet: AG5B
--> TeamGrumman-List message posted by: "discover" <923te(at)att.net (923te(at)att.net)>
Gary,
That's an incredibly good looking air intake for the AG5B. Sounds like it will give much more flow rate and pressure than the factory intake. The factory location is located in a high velocity slipstream and some have said it actually create pressures lower than static.
Seeing the 2 holes aft of the NACA lip I'm guessing that the factory filter box has been replaced? So how about some pics of what's inside the cowl?
On my AG5B I experimented with the 70's AA5B Tiger intake location versus the AG5B intake location. I could switch from one to the other on the fly and noted 0.5 to 1" MP increase over the AG5B intake. Now I'm curious how that compares to a port in the static line....
Looks like another good job from the Aucountry skunkworks.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=383713#3= - The TeamGrumman-List Email Forum -
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Discover
Joined: 26 Feb 2007
Posts: 429
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| Posted: Fri Sep 21, 2012 2:32 pm Post subject: NACA Submerged inlet: AG5B |
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From Gary:
Ned, did you ever get the fairing I sent?
From Ned:
Yes just discovered it. Glad you ask as it was put away in a closet.....
I'm looking forward to trying it out...I'll let you know
What happened to this? It looks like it would make more MP than the NACA...
[img]cid:24113B55E3684FADB130AB2B6421BE79(at)JULES[/img]
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Discover
Joined: 26 Feb 2007
Posts: 429
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| Posted: Fri Sep 21, 2012 2:41 pm Post subject: Re: NACA Submerged inlet: AG5B |
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Try again on the picture
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teamgrumman(at)yahoo.com
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| Posted: Fri Sep 21, 2012 6:42 pm Post subject: NACA Submerged inlet: AG5B |
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It was way too complicated. The MAP results were the same. The biggest problem with the inlet below is that you couldn't get to the plugs. Without a Power FLow, there had to be a big notch in to to clear #2 exhaust. The front baffle had to be hacked up. Way to many things did not fit Occam's Razor.
From: 923te <923te(at)att.net>
To: teamgrumman-list(at)matronics.com
Sent: Friday, September 21, 2012 3:31 PM
Subject: Re: NACA Submerged inlet: AG5B
From Gary:
Ned, did you ever get the fairing I sent?
From Ned:
Yes just discovered it. Glad you ask as it was put away in a closet.....
I'm looking forward to trying it out...I'll let you know
What happened to this? It looks like it would make more MP than the NACA...
[img]cid:1.781367645(at)web114620.mail.gq1.yahoo.com[/img]
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