|ERRATUM SHEET..Propeller Dynamics Vol. 1
-Page 1: change 61 2 2472481 to 61 8 92472481
-Page 4: Drzewieki is pronounced Je-vee-yet'ski
-Page 5, mid-page. change "came of the tracks" to "came
off the tracks"
-Page 9, facing page of photographs: Wright "Flyer" may not
be a replica. Cf. "Kill Devil Hill", p360, H.B.Combs and M.Caidin,
-Page 23, para 5, commencing This is false. The line The
lift does not drop suddenly.. should read The lift coefficient
does not drop suddenly... Thanks to Jack Norris for this correction.
-Page 28: change " M = a / V " to " M = V change "
M2 = a2 / V2 " to " M2 = V2 / a2"
-Page 30: Further reading, 1st item is "Theory of Wing Sections"
-Page 37, opposite page. Diagram heading should be "Plot of profile
efficiency Vs blade angle"
-Page 41, para. 5 commencing "When the brakes are released...".
This argument is wrong. ALL the engine power goes into the slipstream.
However, at cruise, perhaps only 75% of this power produces thrust, the
remainder being lost.
-Page 43, para 6, commencing Consider these... The term tip
speed refers not to the rotational component of the propeller speed,
but to the helical speed, being the vector sum of the rotational
speed and the forward speed of the aircraft. It thus represents the speed
of the airflow over the tip airfoil.
-Page 45, para. 2 commencing Whilst on the subject... The
P&W R-4360 mayhave been the largest production piston aero-engine,
but it was not the largest. The Lycoming XR-7755 and Studebaker 10000
cu. in. H24 were larger. There may be have been larger Russian engines
as well (Thanks to Graham White for this info).
-Page 45, para. 3 commencing Unfortunately... After the oil
seal failed, The prop went into FINE pitch, not reverse pitch. The original
accident report has only recently been declassified, permitting correction
of this error (which is also present in Maguglins 1984 book). Thanks
to Graham White who was given the rather exciting task of de-classifying