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Contents • • • • • • • • • • • • Design and development [ ] The aircraft was designed by to replace the U-1 trainer (a copy of the British ), itself known as Avrushka to the Soviets. Its name was changed to Po-2 in, after Polikarpov's death, according to the then-new Soviet naming system, usually using the first two letters of the designer's family name, or the Soviet government-established that created it. The prototype of the U-2, powered by a 74 kW (99 hp) air-cooled five-cylinder radial engine, first flew on 7 January 1928 piloted by M.M. Aircraft from the preproduction series were tested at the end of 1928 and serial production started in 1929 in Factory number 23 in Leningrad. Production in the Soviet Union ended in 1953, but license-built CSS-13s were still produced in Poland until 1959. Polikarpov Po-2 with Yugoslav markings,, • received 78 aircraft between 1950-1966 and operated them until 1985. • - 10 aircraft in 1949-1969 • Civilian aviation • • designated as K-62 • • • operated Po-2s in the unit.

• Luftwaffe operated Beuteflugzeug captured aircraft. • • • • • The operated some aircraft before the; Three confirmed were in, one confirmed in. [ ] • - • • • • (after 1947 ) • - Five Po-2 operated in 1945–1946, 20 CSS-13 for aerospraying in 1953–1956. • • • • received 45 aircraft in 1949 • Civilian aviation • • • • • ( Turk Hava Kurumu) received two U-2s which were given to Turkey as a gift from Russia in 1933 on the occasion of the 10th anniversary of the Turkish Republic.

Automotive Crack Detection for Railway T rack Using. P.Navaraja,'Crack Detection System For Railway Track By Using Ultrasonic And Pir Sensor' IJAICT, vol.1, Issue 1-2014. This project. This project consist of GPS module, GSM modem, IR sensor, PIR sensor for application of communication purpose, crack detection and finding of human being present in the railway track. The GPS module and GSM modem help us to find and sending railway geometric parameter of crack detection to nearest railway station. A BE final year project to detect rail track using ultrasonic technology. We are getting lot of emails & calls regarding this project, we try to reply most of your mails. Railway track crack detection system project report pdf. Crack detection and security system. This paper proposes the crack detection system in the rail tracks. This is to avoid rail accidents by using latest communication technologies. In this project GSM communication protocols are used to convey the message of crack detection via SMS. Crack detection is.

- 120 aircraft in 1944–1959 • • (1944–1948) • (1945–1952) • (1946–1948) • (1948–1952) • (1952–1959) • (1952–1959) • (1952–1959) • (1952–1959) • (1950–1956) • (Civil operator) Surviving aircraft [ ] Czech Republic • SP-BHA – CSS-13 on static display at the in. It was built in 1955 as the original CSS-13 prototype and flown to the museum in 1972 as a gift from Poland.

[ ] • 0076 – Po-2 airworthy at the Metoděj Vlach Air Museum in. It was built in 1937 and given to Yugoslavia in 1945. It served with the Yugoslav Army and then the Koroški Aeroklub, before finally being acquired by the museum in May 2014. It is painted in its original Soviet military scheme. Hungary • HA-PAO – Po-2 airworthy with the Goldtimer Foundation at in. It is on loan from the Hungarian Museum of Transportation. • 0443 – CSS-13 on static display at the in.

Poland • 641-646 – Po-2LNB on static display at the in. Russia • Unknown ID – Po-2 airworthy with the Federation of Amateur Aviators of Russia at in. Serbia • YAF 0089 – Po-2 on static display at the in. United Kingdom • 0094 – Po-2 airworthy with the in. Its first post-restoration flight occurred on January 10, 2011.