nosedive
Topic Author
Posts: 2176
Joined: Sun May 23, 2004 2:18 pm

Info On 707 Testing 727 Engines

Thu Dec 07, 2006 12:39 am

Ok, so I'm bored after my finals here at school, and I was reading a bit about the history of the 707 testing program. This, from Boeing caught my eye:

Quote:
The Dash 80 flew with a fifth engine mounted on the aft fuselage to test installation feasibility for the trijet 727 and with three different types of engines installed at the same time. It investigated engine-thrust reversers, engine sound suppressers, rigs designed to cause in-flight engine icing conditions, air conditioners, and wing flap and slat modifications.

Googleing around isn't doing me any good. What were the results of these tests, sides the 727  Wink, and does anyone have anymore information and pictures?
 
2H4
Posts: 7960
Joined: Tue Oct 19, 2004 11:11 pm

RE: Info On 707 Testing 727 Engines

Thu Dec 07, 2006 1:14 am



Here you go:




2H4


Intentionally Left Blank
 
BAE146QT
Posts: 981
Joined: Sun Sep 24, 2006 4:58 am

RE: Info On 707 Testing 727 Engines

Thu Dec 07, 2006 2:43 am

I'm frightened to ask - were they all operational, or was it literally to test their aerodynamic properties in situ?
Todos mis dominós son totalmente pegajosos
 
2H4
Posts: 7960
Joined: Tue Oct 19, 2004 11:11 pm

RE: Info On 707 Testing 727 Engines

Thu Dec 07, 2006 2:46 am



I believe one of the main goals was to determine whether the engine would receive sufficient airflow behind the wing during high AOA...


2H4


Intentionally Left Blank
 
citationjet
Posts: 2310
Joined: Sun Mar 09, 2003 2:26 am

RE: Info On 707 Testing 727 Engines

Thu Dec 07, 2006 10:32 am

Reminds me of Pratt & Whitney's Boeing 720 used as an engine testbed.


View Large View Medium
Click here for bigger photo!

Photo © David Hill
View Large View Medium
Click here for bigger photo!

Photo © Alex G.-Denicourt - Contrails Aviation Photography



View Large View Medium
Click here for bigger photo!

Photo © Marc Methot
View Large View Medium
Click here for bigger photo!

Photo © William Pedersen

Boeing Flown: 701,702,703;717;720;721,722;731,732,733,734,735,737,738,739;741,742,743,744,747SP;752,753;762,763;772,773.
 
N231YE
Posts: 2620
Joined: Tue Jul 25, 2006 9:24 am

RE: Info On 707 Testing 727 Engines

Sat Dec 09, 2006 11:11 am

Here's another. Photo scanned from the book, Boeing Aircraft: Since 1916 by Peter M. Bowers.

http://i127.photobucket.com/albums/p152/N231YE/367-80JT8Dcopy.jpg

Just to throw in another oddity, the model 367-80 at one time had three different engine types mounted to it:

http://i127.photobucket.com/albums/p152/N231YE/367-803engines.jpg

Who is online

Users browsing this forum: alaskan9974, ltenhoopen, rmilstre and 1 guest

Popular Searches On Airliners.net

Top Photos of Last:   24 Hours  •  48 Hours  •  7 Days  •  30 Days  •  180 Days  •  365 Days  •  All Time

Military Aircraft Every type from fighters to helicopters from air forces around the globe

Classic Airliners Props and jets from the good old days

Flight Decks Views from inside the cockpit

Aircraft Cabins Passenger cabin shots showing seat arrangements as well as cargo aircraft interior

Cargo Aircraft Pictures of great freighter aircraft

Government Aircraft Aircraft flying government officials

Helicopters Our large helicopter section. Both military and civil versions

Blimps / Airships Everything from the Goodyear blimp to the Zeppelin

Night Photos Beautiful shots taken while the sun is below the horizon

Accidents Accident, incident and crash related photos

Air to Air Photos taken by airborne photographers of airborne aircraft

Special Paint Schemes Aircraft painted in beautiful and original liveries

Airport Overviews Airport overviews from the air or ground

Tails and Winglets Tail and Winglet closeups with beautiful airline logos