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When in 1939 was issued Yak-1, designers, having taken it for the basis, have developed double trainer fighter UTI-26. It has left on tests after I-26 and has soon been adopted to series production under mark Yak-7UTI. It is necessary to tell, that it was a unique double fighter of new generation.
The Yak-7UTI, as well as its subsequent version Yak-7Â, during war have played an exclusive role for pilots preparation.
Yak-7UTI has served as the prototype and for single-seat fighter Yak-7. Single-seat fighting and double training versions Yak-7 had few structural differences and their manufacture has been unified, that during war had very big value.
As well as the Yak-1, fighter Yak-7 became one of the main airplanes of Soviet aviation in first half of war.
Total of 6399 Yak-7 in various versions was built Within 1941-1944.
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|
Yak-1 |
Yak-1 |
Yak-7b |
MiG-3 |
LaGG-3 |
LaGG-3 |
| Year of issue |
1941 |
1943 |
1943 |
1941 |
1941 |
1943 |
| Dimensions |
|---|
| Length, m |
8.48 |
8.48 |
8.48 |
8.25 |
8.81 |
8.81 |
| Wing span, m |
10.0 |
10.0 |
10.0 |
10.2 |
9.81 |
9.81 |
| Wing area, m2 |
17.15 |
17.15 |
17.15 |
17.44 |
17.62 |
17.62 |
| Weight, kg: |
|---|
| Maximum takeoff weight |
2858 |
2884 |
3005 |
3300 |
3280 |
2990 |
| Powerplant |
|---|
| Engine |
M-105P |
M-105PF |
M-105PF |
AM-35A |
M-105P |
M-105PF |
| Power, h.p. |
1100 |
1210 |
1210 |
1350 |
1100 |
1210 |
| Performance |
|---|
| Maximum speed, km/h |
at sea level |
480 |
501 |
531 |
472 |
474 |
542 |
| at altitude |
577 |
592 |
588 |
622 |
549 |
591 |
| m |
4950 |
4100 |
3860 |
7800 |
5000 |
3560 |
| Time to 5000 m, min |
9.2 |
6.2 |
6.6 |
5.7 |
7.4 |
5.8 |
| Service Ceiling, m |
10000 |
12500 |
10200 |
11500 |
9300 |
9500 |
| Service Range*, km |
700 |
625 |
600 |
630 |
700 |
650 |
| Armament |
|---|
| Number |
Cannon |
1 |
1 |
1 |
- |
1 |
1 |
| Machine guns |
2 |
1 |
2 |
3 |
3 |
1 |
|
* Forcing of the engine during 10 minutes.
** On speed making 90 % from maximal.
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"The history of designs of planes in USSR 1938-1950" /Vadim Shavrov/
"Planes of Stalin falcons" /Konstantin Kosminkov and Dmitriy Grinyuk/
"Stories of the aircraft designer" /Alexander Yakovlev/
"The Soviet planes" /Alexander Yakovlev/
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