Performance

Speed tables

To keep a safety margin at any moment of the flight with stall speed (V_S), a specific speed called “reference speed” (V_REF) must be respected at any time. V_REF depends on three factors:

• Aircraft weight.

• Flaps angle.

• Load factor.

As those factors are all changing continuously, the following simple calculation is used for reference speed:

$\mathbf{V}_{\mathbf{REF}}\mathbf{= 1.3\ \times}\mathbf{V}_{\mathbf{S \propto 30{^\circ}}}$ where V_Sα30° is the stall speed with flaps 30° and landing gear down.

Here is the table specifying normal operating speeds for any weight:

• Takeoff speeds (V₂ and V_R) with flaps 10° and 20°.

• Approach speed (V_APP) with different flaps settings (V_REF corresponds to flaps 30°).

• Stall speed (V_S) with each flaps setting.

	TAKEOFF				LANDING				STALL
	α10°		α20°		α0°	α20°	α30°	α40°	α0°	α10°	α20°	α30°	α40°
Weight (tons)	VR	V2	VR	V2	VAPP				VS
30	96	98	89	92	111	95	91	88	85	78	73	70	67
31	97	100	91	93	112	97	92	89	87	80	74	71	68
32	99	101	92	95	115	98	94	91	88	81	76	72	69
33	100	103	94	96	116	100	95	92	90	82	77	73	70
34	102	104	95	97	118	101	97	94	91	83	78	74	72
35	103	106	96	99	120	103	98	95	92	85	79	75	73
36	105	107	98	100	122	104	100	96	94	86	80	76	74
37	106	109	99	101	124	106	101	98	95	87	81	78	75
38	108	110	100	103	125	107	102	99	96	88	82	79	76
39	109	112	102	104	127	108	104	100	98	89	83	80	77
40	110	113	103	105	129	110	105	102	99	91	84	81	78
41	112	115	104	107	130	111	106	103	100	92	86	82	79
42	113	116	105	108	132	113	107	104	101	93	87	83	80
43	115	117	107	109	133	114	109	105	102	94	88	84	81
44	116	119	108	111	135	115	110	107	104	95	89	85	81
45	117	120	109	112	136	117	111	108	105	96	90	86	82
46	118	121	110	113	137	118	113	109	106	97	91	86	83
47	120	123	112	114	139	119	114	110	107	98	92	87	84
48	121	124	113	115	140	120	115		108	99	92	88
49	122	125	114	117	142	122	116		109	100	93	89
50		126		118	143	123	117		110	101	94	90
51		127		119	144	124	118		111	102	95	91

Related notes:

• When approaching with 40% spoilers, you should increase V_APP by 5 knots.

• Takeoff with a weight above 49.150 tons is allowed only with 0° flaps.

• Stall speed increases with load factor (and hence roll angle): 8% for 30°, 19% for 45°, 40% for 60°.

Takeoff

Following charts indicate normal takeoff speed and distance with 20 degrees of flaps.

Takeoff distance includes horizontal distance required to take-off plus climb to a 50 feet clearance height.

Takeoff is performed with full throttle; illustration covers use and non-use of water-methanol injection system.

During aircraft operation, a “take-off card” is placed in the field of view of the full crew, gathering essential information for the take-off.

It is completed with the following steps:

1. Airport OACI code and information based on weather: QFU, wind, visibility, ceiling, temperature, QNH.

2. Take-off weight, corresponding trim calculated and take-off power (with or without water-methanol injection).

3. Flaps setting and corresponding reference speeds: V₁, V_R, V₂.

4. Transition altitude, potential return to take-off airport procedure.

5. Landing speeds in case of return.

Climb

Maximum climb speed with and without air bleed.

Cruise

Each following chart corresponds to a given altitude.

It shows true airspeed and fuel consumption for various N1 values, with air bleed.

Descent

Two types of descents are presented in following charts:

• Normal descent with airbrakes retracted.

• Rapid descent with airbrakes extended.

In both cases, a speed of 180 knots is targeted.

Landing

Following charts indicate normal landing speed and distance with different flaps settings.

Two scenarios are provided:

• Normal landing without airbrakes (A/B) and without reverse.

• Short field landing with 40% airbrakes and reverse.

Similarly to the take-off card, a landing card is filled with essential information related to the landing.

It is completed with the following steps:

1. Airport OACI code and information based on weather: QFU, wind, visibility, ceiling, temperature, QNH.

2. Landing weight and corresponding trim calculated.

3. Security altitude, decision height and corresponding altitude.

4. Landing speeds depending on flaps setting.

5. Missed approach procedure, with transition altitude and details of the go-around procedure.

6. Go-around speed and flaps setting.