Allison T40

Allison T40, sebutan perusahaan Allison Model 500, adalah mesin turboprop Amerika awal terdiri dari dua Allison T38 bagian power daya mengemudi baling-baling kontra-berputar melalui gearbox.

Maximum power output: 4,000 shp

Aplikasi 
 Douglas A2D Skyshark
 North American A2J Super Savage
 Convair P5Y
 Convair R3Y Tradewind
 Hiller X-18
 Lockheed XFV
 Convair XFY
 Republic XF-84H Thunderscreech

Referensi 

 

 
 

 Flight 1950 article
 [http://books.google.com/books?id=KS0DAAAAMBAJ&pg=RA1-PA159&dq=popular+science+titanium+1950&hl=en&ei=4kO5TKvHAqWxnAefke3XDQ&sa=X&oi=book_result&ct=result&resnum=3&ved=0CDYQ6AEwAg#v=onepage&q&f=true Dual Turbine Produces 5,500 h.p.] early article with good illustration showing how two engines are connected to one gear box
 "American Turboprops" a 1950 Flight article
 "Tradewind Turboprops" a 1955 Flight'' article

Mesin pesawat terbang Allison
Mesin pesawat turboshaft