The Voskhod was designed as an incremental improvement on the Vostok to meet Khruschev's goal. As a single capsule would be ineffective for proper travel to the Moon, the vehicle needed to be able to hold more people. Khrushchev ordered Korolev to launch three people on the Voskhod capsule quickly, as the United States had already completed a two-man mission with Gemini. Korolev accepted, on the condition that more backing would be given to his N-1 rocket program. One of the difficulties in the design of the Voskhod was the need to land it via parachute. The three-person crew could not bail out and land by parachute, since the altitude would not be survivable. So the craft would need much larger parachutes in order to land safely. Early tests with the craft resulted in some failures causing the death of test animals until use of stronger fabric improved parachute reliability.