The third launch of the N1 carrier missile was held 50 years ago – June 27, 1971. All 30 engines of the block A came to the mode of the preliminary and main strokes in accordance with the standard cyclogram and were normally functioned until they were activated by the control system by 50.1 s. However, since the start of the flight, there was an abnormal flow of the stabilization process on the roll, and the mismatch over the corner of rotation continuously increased to 14.5 s. reached 145 °.
Since the emergency shutdown command was blocked to 50 s., then flight up to 50.1 s. It was almost uncontrollable. The most likely cause of the accident is the action of unaccounted earlier disturbing moments exceeding the disposable control moments on the roll. To ensure the management of a rocket on a roll in less than a year, steering engines operating on oxidative generator gas and a combustible separated from the main engines were created.
Work on the creation of a set of carrier rocket N1 was determined by the decision of the Central Committee of the CPSU and the SM of the USSR of September 24, 1962 No. 1022-439. The creation of the H1-L3 complex has brought a wide cooperation of organizations of rocket and space and other industries of the domestic industry.
The first launch of the N-1 rocket took place on February 21, 1969. She had a starting mass of 2735 tons, engines of the 1st stage engines at the start of 4500 vehicles and a useful cargo of about 70 tons. A total of four starts were held, the last – November 23, 1972. All the starts were unsuccessful, and the N1-L3 program in 1974 was closed with the recommendation of the maximum use of the entire created in the development of the MultiShair Transport Space System “Energy-Buran”.
After that, the production grinding of missile blocks, almost all equipment of technical, starting and measuring complexes was destroyed. Despite the fact that the experience of design and production and technological developments, operation and ensuring the reliability of the powerful rocket system H1 was fully used when creating a carrier launch “Energy” and, obviously, will be widely used in the implementation of subsequent projects, it is impossible not Mark the fallacy of termination of work on H1.
When working on the lunar program on TsNIIMASH (today, it is included in the state corporation “Roskosmos”) tasks of comprehensive terrestrial workshop, demanding the creation of a new powerful experimental base and the most complex research and testing work.