dsc37978.jpg

Detail of the ID plates on the electrical connection panel

The fuel cell was manufactured by Pratt & Whitney.

Pratt & Whitney manufactured the (very large) "Wasp" aircraft engine product line. Engines in this product line powered such WWII aircraft as the B-24, the P-47, and the Corsair and such Cold War aircraft as the C-97 Stratofreighter, the KC-97 Stratotanker, the B-50 Superfortress, and the B-36 Peacemaker. The Wasp Major R-4360, which powered these Cold War aircraft, was also the engine used on the original Pregnant Guppy (used to ferry Apollo/Saturn hardware around the country).

Pratt & Whitney later went on to manufacture the RL-10 rocket engine which powered the Saturn S-IV stage, the proposed S-V stage, and the Centaur stage; the latter had its first successful flight on November 26, 1963, and Centaur stages are still flying today.

The ID plate immediately under the former location of the medallion reads

Power Supply
Electrical Fuel Cell

NAA/S & ID SCD No.	ME464-0013
Contract No	M3J3XA-406000
Stock No.	[blank]
MFR Part No.	602600
MFR Serial No.	06763P650711

Property
U.S.

Pratt & Whitney Aircraft
Div. of United Aircraft Corp.
East Hartford, Conn. U.S.A

The bottom ID plate reads

Manufactured Under One or
More of the Following

Patents:		2,716,670
2,928,783		2,969,315

Other Patents Pending