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Forum: Rotorheads

25th Aug 2014, 11:59

Replies: 2

HELICOPTER HUB LOADS

Views: 1,686

Posted By jagannath

HELICOPTER HUB LOADS

With reference to the main rotor hub loads in rotating system and vibratory hub loads in non-rotating system. There seems to be no first cut closed form formulas or empirical in nature but rather...

Forum: Flight Testing

24th May 2014, 06:11

Replies: 0

prototype helicopter initial tests........

Views: 1,815

Posted By jagannath

prototype helicopter initial tests........

sir
with reference to the above title I want to know whether there is any specific standards are being followed in initial ground runs and initial flights.
What I mean is when rotorcraft is built...

Forum: Rotorheads

16th Mar 2014, 05:42

Replies: 7

helicopter power off critical main rotor rpm(lower)

Views: 2,071

Posted By jagannath

power off critical rotor rpm

sir
What am looking is that "how designers arrive at lowest critical rotor rpm" below which as you said engine power is required to recover. Is there any formula to arrive at that.

regards...

Forum: Rotorheads

14th Mar 2014, 14:12

Replies: 7

helicopter power off critical main rotor rpm(lower)

Views: 2,071

Posted By jagannath

helicopter power off critical main rotor rpm(lower)

sir
i want to know the factors/empirical formula to arrive at power off critical rotor rpm (lower). we know that in a single main rotor/tail rotor configuration especially for a hingeless rotor, at...

Forum: Rotorheads

24th Feb 2014, 15:08

Replies: 4

mast moment indicator

Views: 5,942

Posted By jagannath

mast moment indicator

sir
with reference to the above subject, I would like to know the significance of mast moment warning system installed in some of the eurocopter helicopters. Why this warning system is optional in...

Forum: Rotorheads

5th Feb 2014, 05:22

Replies: 13

rotorcraft 'g' limit

Views: 2,314

Posted By jagannath

rotorcraft 'g' limit

sir
for a given rotorcraft weight, main rotor diameter, chord, airfoil, rotor rpm what may be the 'g' capability the rotor can sustain(steady or transient) during maneuver(pull up/turn/wing...

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