Rocket a manned capsule occurred when Soyuz T-10, on a mission to the Salyut 7 space station, exploded on the pad. Solid rocket propelled ejection seats are used in many military aircraft to propel crew away to safety from a vehicle when flight control is lost. Hobbyists build and fly a wide variety of model rockets. Many companies produce model rocket kits and parts but due to their inherent simplicity some hobbyists have been known to make rockets out of almost anything. Rockets are also used in some types of consumer and professional fireworks. A Water Powered Rocket is a type
Proportional cake-cutting Most algorithms for proportional division can be adapted to chore division in a straightforward way. Proportional cake-cutting A proportional cake-cutting is a kind of fair cake-cutting. It is a division of a heterogeneous resource ("cake") that satisfies the proportionality criterion, namely, that every partner feels that his allocated share is worth at least 1/"n" of the total. Two assumptions are usually made when proportionality is discussed: For two people, divide and choose is the classic solution. One person divides the resource into what they believe are equal halves, and the other person chooses the "half" they prefer. The non-atomicity assumption