| Description |
| Construction |
Publicly held company "OKB Sukhoi" |
| Designation |
S -21g |
S -21 |
| Year of the building |
the project |
| Type |
Supersonic passenger aircraft of business- class (administrative) |
| Crew |
2 |
| Number of passengers |
6 |
6. 10 |
| Geometric and mass characteristics |
| Span of wing, m |
19,92 |
19,90 |
| Length of aircraft, m |
40,5 |
37,86 |
| Equivalent diameter of fuselage, m |
2,16 |
|
| Aircraft altitude, m |
8,25 |
9,55 |
| Wing area, [m]2 |
130 |
140 |
| Sweepback of the wing |
32[o]/68[o] |
|
| Base of chassis, m |
15,8 |
|
| Track of landing gear, m |
4,11 |
|
| Takeoff weight, the kgf |
normal |
48000 |
|
| maximum |
48500 |
51800 |
| Weight of empty, kgf |
22560 |
24570 |
| The payload |
normal |
|
460 |
| maximum |
|
910 |
| Propellant weight in the internal tanks, the kgf (l) |
24960 (30,576) |
26520 |
| Starting specific wing load, [kg]/[m]2 |
342 (470) |
|
| Power plant |
| Number of engines |
2 |
3 |
| Engine |
TRDF (TURBOJET ENGINE WITH AFTERBURNER) AL -363 |
TRDD D -21[A]1 |
| Thrust of engine (starting), kG |
2[kh] 11500 |
3[kh] 7500 |
| Starting thrust-weight ratio |
0,479 (0,333) |
|
| Cruising specific consumption of fuel, [kg]/[dan]*[chas] |
1,15 |
|
| Flight-performance data (calculated) |
| Cruising speed, km/h ([M]=) |
supersonic at the height of 15 km |
2025 |
2125 (2,0) |
| subsonic |
|
1015 (0,95) |
| Flying range, km |
supersonic with [M]=2,0 |
7400
|
7400 |
| supersonic with [M]=1,4 |
4370
|
|
| subsonic with [M]=0,95 |
7400
|
7400 |
| Ceiling, m |
18500
|
15500-19500 |
| Landing speed, the km/h |
270 |
|
| Unstick speed, km/h |
340 |
|
| Required length VPP, m |
1980 |
1980 |
| Intensity of sonic boom, psi ([kg]/[m]2) |
< 0.007 (5) |
(not more 5) |
