Source: This Sikorsky Memo is a part of an exhibit at the New England Air Museum (Windsor Locks, CT.)
To: MR. I. I. SIKORSKY
cc: Mr. Neilson
Capt.Sergievsky
Mr. S. Gluhareff
Mr. N. Sinitzin
Files (2)
Date: August 31, 1931
From: M. GLUHAREFF
Subject: FLIGHT REPORT ON S-40 AMPHIBION - GROSS WEIGHT 32,000#
Weather: clear, approximately 12 wind (N.W.)
Temperature: 75
Barometer pressure: 30.04
Time: start 2:15 P.M.; finish 4:13 P.M.
Take-off time on water - 30 seconds
Cruising on 1650 R.P.M. all engines - average speed 100.5 M.P.H.
Cruising on 1750 R.P.M. all engines - average speed 107.75 M.P.H.
High speed, full throttle, 2010 R.P.M. all engines - average speed 130.25 M.P.H.
Cross wind interfered with the speed test flight; it was exactly 90 degrees to the course.
The fairing on the landing gear axles came off, building a screeen about 1-1/2 sq. feet
flat plate area on each side.
Landing at New Haven Harbor about 3:20 P.M. the fairings from the axles were removed entirely.
Climb to Altitude Time Speed Ind. R.P.M.
500 30 sec. 90 1850
1000 1 min. 17 sec. 95 1800
2000 3 min. 7 sec. 95 1820
3000 4 min. 40 sec. 96 1820
4000 6 min. 25 sec. 95 1800
5000 8 min. 10 sec. 97 1800
5800-6000 10 min.
At 6000 ft. altitude - three engines - flight was tested - rate of climb approximately
200 ft. per min. (R.P.M. - 1830)
At 2000 ft. altitude - two engines - flight was tested - during five (5) minutes 600 ft
was lost - (R.P.M. - 1820)
At 2000 ft. altutude - three engines - flight was repeated - during 1 minute exactly,
the ship gained 200 ft. (from 2100 to 2300 ft.) (R.P.M. - 1820).
Pilot: Captain Sergievsky
Observers: S.Gluhareff
M.Gluhareff
Signed
M. GLUHAREFF