justloveplanes
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Bubble Antenna On UA 737 Fuselage

Wed Aug 01, 2012 2:51 pm

I noticed on UA/PMCO 737's there is what appears to be an antenna or radome about 3/4's of the way back on the top fuselage. Looks about 6 feet in diameter

Is this the Direct TV antenna, and if so, what kind of aero penalty does this impart?
 
AirframeAS
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RE: Bubble Antenna On UA 737 Fuselage

Wed Aug 01, 2012 4:13 pm

It's a LiveTV satellite. The same equipment atop the F9 Airbuses.
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B6JFKH81
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RE: Bubble Antenna On UA 737 Fuselage

Wed Aug 01, 2012 8:59 pm

Quoting AirframeAS (Reply 1):
It's a LiveTV satellite. The same equipment atop the F9 Airbuses.

I thought the LiveTV setup was a little (not much) different on the B737's than the A320s? Last time I was down in MCO at the LiveTV warehouse, I was surprised at how large the LiveTV radome was compared to the ones on our aircraft. I think the CO birds have the same one as the Virgin Blue and WestJet planes:


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HAWK21M
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RE: Bubble Antenna On UA 737 Fuselage

Sat Aug 04, 2012 10:13 am

Whats the load penalty post installation of the antenna?.
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AirframeAS
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RE: Bubble Antenna On UA 737 Fuselage

Sun Aug 05, 2012 3:21 am

Quoting B6JFKH81 (Reply 2):
I thought the LiveTV setup was a little (not much) different on the B737's than the A320s?

The only thing that is different is the brace that is used to attach all the fittings to the fuselage given that the outside diameter between the 737's and the A320's are quite different.

Quoting HAWK21M (Reply 3):
Whats the load penalty post installation of the antenna?.

No clue, but I do know that there is some fuel penalty involved no matter what. I am assuming it is not much.
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aeroweanie
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RE: Bubble Antenna On UA 737 Fuselage

Sun Aug 05, 2012 6:02 am

Quoting B6JFKH81 (Reply 2):
I thought the LiveTV setup was a little (not much) different on the B737's than the A320s? Last time I was down in MCO at the LiveTV warehouse, I was surprised at how large the LiveTV radome was compared to the ones on our aircraft. I think the CO birds have the same one as the Virgin Blue and WestJet planes

JetBlue, WestJet and Continental (United) aircraft all have the same LiveTV dome installed. On Australia's east coast, they have trouble "seeing" the LiveTV satellites, so the Vifgin Blue aircraft have the "high-gain" antenna which requires a bigger dome.
 
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HAWK21M
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RE: Bubble Antenna On UA 737 Fuselage

Mon Aug 06, 2012 10:26 am

Quoting AirframeAS (Reply 4):

No clue, but I do know that there is some fuel penalty involved no matter what. I am assuming it is not much.

Considering the area covered & location,it would be quite some penalty.
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