PPRuNe Forums - View Single Post - AW139 G-LBAL helicopter crash in Gillingham, Norfolk
Old 13th Apr 2014, 15:55
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G550 driver
 
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Boudreaux Bob

From CS-29

VMINI means instrument flight minimum speed, utilised in complying with minimum limit speed requirements for instrument flight.

It relates to;

Static longitudinal stability

(a) General. The helicopter must possess positive static longitudinal control force stability at critical combinations of weight and centre of gravity at the conditions specified in sub* paragraphs IV (b) to (f) of this appendix. The stick force must vary with speed so that any substantial speed change results in a stick force clearly perceptible to the pilot. The airspeed must return to within 10% of the trim speed when the control force is slowly released for each trim condition specified

(d) Slow cruise.

Stability must be shown throughout the speed range from 0.9 VMINI to 1.3 VMINI or 37 km/h (20 knots) above trim speed, whichever is greater, with:
(1) The helicopter trimmed and power adjusted for level flight at 1.1 VMINI; and
(2) Landing gear retracted (if retractable).

What's the point you're making, or should we guess
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