From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Comparison graph of seamed tube oval flattened wire radiator elements, plotting HP dissipated and air pressure against air velocity.
| Identifier | ExFiles\Box 131\1\ scan0232 | |
| Date | 28th February 1936 | |
| L604D COMPARISON OF SEAMED TUBE OVAL FLATTENED WIRE ELEMENTS ALL ELEMENTS REDUCED TO 1·14" DEEP AND 14·4 GALLS./MIN./FT. OF WIDTH. LENGTH OF FLAT. ANGLE OF FLAT. 452 7" 22G. WIRE 8 WIRES DEEP 13·82 WIRES/" HEIGHT .009" CU. TUBE 18·6/FT WIDTH. WIRE WT. 2·52 LBS. L581 452 7° 22G 8 10·1 .009" 18·5/- 1·85 L585 483 0° 22G " 12·9 " 17·8 1·268 L600 495 0° 22G " 8·9 " 17·95 ·885 L603 493 0° 22G " 16·3 " 18·05 1·582 L604 483 7° 22G " 12·9 " 18·0 1·268 L605 495 0° 21G 8 .009" L60630 HARRISON L 608 MARSTON MARK VI L 609 MARSTON MARK V L 610 GALLAY L 611 FRONTAL AREA = 1 ☐' AIR IN 60°F MEAN WATER TEMP. 160°F.{Mr Friese} STATIC COLD AIR PRESS. INS. WATER HP. DISSIPATED AIR FACE VELOCITY. FT/MIN. AT 60°F Graph Labels: 611, 608, 609, 610, 604, 581, 600, 603, 605, MORRIS, 585. Vertical Text: NOV 1935 E.W.S 28/2/36 | ||