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Engine Testbed A/C  
User currently offlineCancidas From Poland, joined Jul 2003, 4112 posts, RR: 11
Posted (7 years 9 months 1 week 4 days 18 hours ago) and read 7595 times:

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."
19 replies: All unread, jump to last
 
User currently offlineBMIFlyer From UK - England, joined Feb 2004, 8810 posts, RR: 58
Reply 1, posted (7 years 9 months 1 week 4 days 18 hours ago) and read 7588 times:

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

Here we are Big grin


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Lee



Sometimes You Can't Make It On Your Own
User currently offline2H4 From United States of America, joined Oct 2004, 8955 posts, RR: 60
Reply 2, posted (7 years 9 months 1 week 4 days 18 hours ago) and read 7582 times:
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Pratt & Whitney Canada operates a Boeing 720:


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2H4





Intentionally Left Blank
User currently offlineHa763 From United States of America, joined Jan 2003, 3663 posts, RR: 5
Reply 3, posted (7 years 9 months 1 week 4 days 17 hours ago) and read 7542 times:
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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


User currently offlineAA777223 From United States of America, joined Feb 2006, 1249 posts, RR: 6
Reply 4, posted (7 years 9 months 1 week 4 days 17 hours ago) and read 7529 times:

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?



Sic 'em bears
User currently offlineA340Spotter From United States of America, joined Jul 2003, 1981 posts, RR: 24
Reply 5, posted (7 years 9 months 1 week 4 days 16 hours ago) and read 7503 times:

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!"
User currently offlineAA777223 From United States of America, joined Feb 2006, 1249 posts, RR: 6
Reply 6, posted (7 years 9 months 1 week 4 days 7 hours ago) and read 7396 times:

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!



Sic 'em bears
User currently offlineAeroweanie From United States of America, joined Dec 2004, 1610 posts, RR: 52
Reply 7, posted (7 years 9 months 1 week 3 days 23 hours ago) and read 7295 times:
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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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Photo © Matt Willmott-Sharp



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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Photo © Frank C. Duarte Jr.



User currently offlineCf6ppe From United States of America, joined Mar 2006, 352 posts, RR: 0
Reply 8, posted (7 years 9 months 1 week 3 days 18 hours ago) and read 7226 times:

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....


User currently offlineEmSeeEye From United States of America, joined Jun 2006, 508 posts, RR: 0
Reply 9, posted (7 years 9 months 1 week 3 days 18 hours ago) and read 7212 times:

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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User currently offlineBohica From United States of America, joined Feb 2004, 2715 posts, RR: 0
Reply 10, posted (7 years 9 months 1 week 3 days 17 hours ago) and read 7188 times:

Dumb question. (Maybe not) Why would GE obtain a 747 with PW engines when there are GE powered 747's available?

User currently offlineA342 From Germany, joined Jul 2005, 4689 posts, RR: 3
Reply 11, posted (7 years 9 months 1 week 3 days 8 hours ago) and read 7105 times:

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


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Exceptions confirm the rule.
User currently offline2H4 From United States of America, joined Oct 2004, 8955 posts, RR: 60
Reply 12, posted (7 years 9 months 1 week 3 days 7 hours ago) and read 7077 times:
AIRLINERS.NET CREW
DATABASE EDITOR



Some Yakovlevs were used as testbeds, as well:


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2H4





Intentionally Left Blank
User currently offlineSEPilot From United States of America, joined Dec 2006, 6953 posts, RR: 46
Reply 13, posted (7 years 9 months 1 week 3 days 6 hours ago) and read 7027 times:

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
User currently offlineAeroweanie From United States of America, joined Dec 2004, 1610 posts, RR: 52
Reply 14, posted (7 years 9 months 1 week 3 days 3 hours ago) and read 6959 times:
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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


User currently offlineCancidas From Poland, joined Jul 2003, 4112 posts, RR: 11
Reply 15, posted (7 years 9 months 1 week 2 days 18 hours ago) and read 6852 times:

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."
User currently offline2H4 From United States of America, joined Oct 2004, 8955 posts, RR: 60
Reply 16, posted (7 years 9 months 1 week 2 days 18 hours ago) and read 6845 times:
AIRLINERS.NET CREW
DATABASE EDITOR




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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2H4





Intentionally Left Blank
User currently offlineCancidas From Poland, joined Jul 2003, 4112 posts, RR: 11
Reply 17, posted (7 years 9 months 1 week 1 day 17 hours ago) and read 6740 times:

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."
User currently offlineAeroweanie From United States of America, joined Dec 2004, 1610 posts, RR: 52
Reply 18, posted (7 years 9 months 1 week 1 day 5 hours ago) and read 6640 times:
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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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User currently offlineJFKTOWERFAN From United States of America, joined Sep 2001, 1100 posts, RR: 15
Reply 19, posted (7 years 9 months 1 week 1 day 5 hours ago) and read 6628 times:
AIRLINERS.NET CREW
DATABASE EDITOR

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

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Photo © AirNikon


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

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Photo © Bill Blanchard - AirTeamImages



Corey



C'mon Man
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