cancidas
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Engine Testbed A/C

Mon Jan 15, 2007 1:35 pm

does anyone know the registrations of the major tesbed aircraft? GE has N747GE, raytheon N289MT. i'm sure there are others, can anyone help me out?
"...cannot the kingdom of salvation take me home."
 
BMIFlyer
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RE: Engine Testbed A/C

Mon Jan 15, 2007 1:38 pm

Well, I know that N7470 was an engine testbed aircraft at one stage  Smile

Here we are Big grin


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Lee
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2H4
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RE: Engine Testbed A/C

Mon Jan 15, 2007 1:44 pm




Pratt & Whitney Canada operates a Boeing 720:


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ha763
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RE: Engine Testbed A/C

Mon Jan 15, 2007 2:49 pm

RR also has a 747 testbed, currently registered N787RR. It is based in Waco, Texas and is being used to test the Trent 1000 for the 787.

http://www.rolls-royce.com/media/showPR.jsp?PR_ID=40219
 
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AA777223
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RE: Engine Testbed A/C

Mon Jan 15, 2007 2:57 pm

Quoting Ha763 (Reply 3):
RR also has a 747 testbed, currently registered N787RR. It is based in Waco, Texas and is being used to test the Trent 1000 for the 787.

That's incredible! I go to school here in Waco at Baylor. Is there any way one can see the aircraft? Is it at the regional airport or TSTC?
A318/19/20/21, A300, A332/3, A343/6, A388, L1011, DC-9, DC-10, MD-11, MD-80, B722, B732/3/4/5/7/8/9, B743/4/4M, B752/3, B762/3/4, B772/E/W, B788/9, F-100, CRJ-200/700/900, ERJ-135/145/175, DH-8, ATR-72, DO-328, BAE-146
 
A340Spotter
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RE: Engine Testbed A/C

Mon Jan 15, 2007 3:30 pm

Quoting AA777223 (Reply 4):
Is it at the regional airport or TSTC?

TSTC, or CNW if you prefer...if you go there, you'll possibly see the new PrivatAir B763 that just went there last week.

JSD
"Irregardless, it's a Cat III airplane, we don't need an alternate!"
 
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AA777223
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RE: Engine Testbed A/C

Tue Jan 16, 2007 1:08 am

Quoting A340Spotter (Reply 5):
TSTC, or CNW if you prefer...if you go there, you'll possibly see the new PrivatAir B763 that just went there last week.

JSD

Does this mean that the RR 747 is no longer there? I noticed the article was dated 2005. I am assuming L3 and TSTC share CNW share facilities. In fact, all of the Baylor aviation courses are done in conjunction with TSTC, at CNW. The university has many connections with L3; maybe I can finagle a tour!
A318/19/20/21, A300, A332/3, A343/6, A388, L1011, DC-9, DC-10, MD-11, MD-80, B722, B732/3/4/5/7/8/9, B743/4/4M, B752/3, B762/3/4, B772/E/W, B788/9, F-100, CRJ-200/700/900, ERJ-135/145/175, DH-8, ATR-72, DO-328, BAE-146
 
aeroweanie
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RE: Engine Testbed A/C

Tue Jan 16, 2007 8:17 am

Quoting Cancidas (Thread starter):
does anyone know the registrations of the major tesbed aircraft? GE has N747GE, raytheon N289MT. i'm sure there are others, can anyone help me out?

N289MT is an electronics testbed, not an engine testbed.

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P&WC operates two Boeing 720s, N720PW and C-FETB, as engine testbeds:
http://i4.photobucket.com/albums/y120/Aeroweanie/FlyingTestBeds.jpg

P&W operates Boeing 747SP N747UT as an engine testbed:
http://www.747sp.com/images/I6hLpaBqajdkvkty.jpg

RR will operate Boeing 747-200 N787RR as engine testbed.

GE operates Boeing 747-100 N747GE as an engine testbed:

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Honeywell currently operates Boeing 720 N720H as an engine testbed:

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Honeywell is modifying a 757-200, N757HW, to replace N720H.

The prototype 747, N7470, was used to test the RR Trent for the 777:

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The Boeing 367-80 was used to test the JT8D for the 727:


VC-10 G-AXLR was used to test the RB211 for the Tristar:


A B-52 was used to test the JT9D and CF6:


P&WC used to use Vickers Viscount C-FTID as an engine testbed:

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P&WC tested the PT6A on the nose of a Beech 18.

Lycoming tested the ALF502 on a rig suspended below a North American AJ2 Savage (N68667):

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cf6ppe
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RE: Engine Testbed A/C

Tue Jan 16, 2007 1:16 pm

Engine Testbed Aircraft is an interesting subject.... I would like to add the following:

A highly modified B-17 aircraft was used as the testbed for the PW T-34 turboprop engine. The cockpit area was moved rearward and the test engine was fitted on the front of the fuselage. The T-34 engine @ 5-6000 hp could easily haul the B-17 with the regular four Curtiss Wright R-1820 engines feathered.

A B-50 aircraft was used for the testbed for the PW J-57 engine prior to the B-52 eight engine testbed. I was told by long gone Boeing mechanics that the B-50 testbed aircraft swooped down over BFI with the five engines running and then make a second pass and climb out with just the J-57 powering the B-50. First test flight of the J-57 was in 1951.

PW had two B-45 engine testbed aircraft. I am aware of J-75, JT3D, J-60, and TF-30 afterburner engines being tested on the B-45's. On the B-45 aircraft, the test engines were lowered from the bomb bay and air started. The B-45's had 4 each ~6000 lb thrust engines so the addition of a J-75, JT3D, or TF-30 afterburner powerplant substantially improved the (B-45's) climb performance. The little J-60 (@ 3000 lbs thrust) didn't help much....!

PW tested the T-57 - a turbo prop version of the J-57 - on a C-124. The inability to build a large enough propeller killed the T-57 project.

PW also installed two JT3D powerplants on a loaned B-66 aircraft in order to build up time on the JT3D's. But just as soon as the airlines started flying JT3D's in commercial service, the time painfully accumulated on the B-66 was quickly surpassed.

The B-17 and B-45's were operated from the PW airport in East Hartford.

Perhaps, some of the A-netters have photos of the above described unusual aircraft....
 
emseeeye
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RE: Engine Testbed A/C

Tue Jan 16, 2007 1:33 pm

Very interesting thread but I have one question. What is the point of testing a PT-6 on a 720? Thats a whole lotta plane for that engine.


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bohica
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RE: Engine Testbed A/C

Tue Jan 16, 2007 2:26 pm

Dumb question. (Maybe not) Why would GE obtain a 747 with PW engines when there are GE powered 747's available?
 
A342
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RE: Engine Testbed A/C

Tue Jan 16, 2007 11:49 pm

In Russia, a specifically modified IL-76 is used.


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Exceptions confirm the rule.
 
2H4
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RE: Engine Testbed A/C

Wed Jan 17, 2007 12:17 am



Some Yakovlevs were used as testbeds, as well:


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SEPilot
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RE: Engine Testbed A/C

Wed Jan 17, 2007 1:45 am

Bradley Air Museum (BDL) has a B-17 that was once used as an engine test bed; I saw it years ago, do not remember who used it or what engine it was used to test (may in fact have been this one.)

Quoting Cf6ppe (Reply 8):
A highly modified B-17 aircraft was used as the testbed for the PW T-34 turboprop engine. The cockpit area was moved rearward and the test engine was fitted on the front of the fuselage. The T-34 engine @ 5-6000 hp could easily haul the B-17 with the regular four Curtiss Wright R-1820 engines feathered.

When I saw it it was in bad shape-had been heavily damaged by a tornado that went right through the museum-don't know if it's been restored or not.
The problem with making things foolproof is that fools are so doggone ingenious...Dan Keebler
 
aeroweanie
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RE: Engine Testbed A/C

Wed Jan 17, 2007 4:42 am

There were actually two B-17 testbeds built as Model 299Zs. Besides the nose mods, they also had the cockpit moved aft. One went to Curtiss Wright (N6694C) and one went to Pratt & Whitney (N5111N). They were used to test the R-3350 and R-4360 initially. Later, they tested turboprops and I have seen a photo of the CW 299Z with a turbojet below the nose. The P&W 299Z ended up in the Bradley (now New England) Air Museum, where it was mangled by a tornado in 1979. It has since been restored and flew in 2004. The CW 299Z became a borate bomber and crashed in 1980. It too is being restored.
http://www.warbird-central.com/B17%20n5111n.jpg
 
cancidas
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RE: Engine Testbed A/C

Wed Jan 17, 2007 1:59 pm

what's the reg of the 757 that was used to test avionics for the F-22?
"...cannot the kingdom of salvation take me home."
 
2H4
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RE: Engine Testbed A/C

Wed Jan 17, 2007 2:05 pm




Quoting Cancidas (Reply 15):
what's the reg of the 757 that was used to test avionics for the F-22?

N757A:


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cancidas
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RE: Engine Testbed A/C

Thu Jan 18, 2007 2:38 pm

don't know if i'm remembering this correctly, but was there ever a A340 with the #2 engine replaced by a test engine?
"...cannot the kingdom of salvation take me home."
 
aeroweanie
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RE: Engine Testbed A/C

Fri Jan 19, 2007 2:14 am

Quoting Cancidas (Reply 17):
don't know if i'm remembering this correctly, but was there ever a A340 with the #2 engine replaced by a test engine?

You remember right:

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jfktowerfan
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RE: Engine Testbed A/C

Fri Jan 19, 2007 2:25 am

Boeing / GE 727 N32720 Unducted Fan test A/C:

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McDonnell Douglas / GE N980DC Unducted Fan Test A/C:

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