1. OPERATIONAL AIRSPEEDS   Main page Next

Lockheed 1049G/C121G Super Constellation
Operations Manual Synopsis

Operational Airspeeds
IAS in Knots, wings level, 1 g-load factor
Gross Wt.
Lbs.

Vs
Vso
60%
Vso
80%
Vso
100%

Vr

V2

Vx

Vy

Vapr

Vat
Short
Vat
90,000 98 88 81 78 88 99 104 113 110 101 91
100,000 104 92 85 82 94 105 110 120 117 107 97
110,000 109 97 89 86 99 110 115 125 122 112 102
120,000 114 101 93 90 104 115 120 131 127 117 107
130,000 119 105 97 94 109 120 125 137 132 122 112
140,000 123 109 100 97 113 123 129 142 136 126 116
* IAS: airspeed displayed on airspeed gauge.
* Vs: stall IAS with landing gear and flaps up.
* Vso: stall IAS with flaps and gear down (landing configuration).
* Vso%: percentage of flap extended for Vso IAS. When flaps deployed, Vso speeds with gear up or down are the same.
* Vr: rotation IAS. Slowly lift nose so takeoff attitude reached as V2 is reached.
* V2: liftoff IAS
* Vx: best angle of climb IAS
* Vy: best rate of climb IAS
* Vapr: approach IAS
* Vat: threshold (over the fence) IAS.
* Short Vat: short-field landing Vat IAS; must make power approach
* Above table is calculated from Operations Manual graph on pages 6-2, figure 6-2 (Sheet 1 of 3) and 6-3, figure 6-2 (Sheet 2 of 3). Refer to this graph to calculate stall speeds at other gross weights, angles of bank, and g-load factors.

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