1 The document should include the beginning date and whether itâs a month-to-month tenancy or a lease. 2  If itâs a lease, the ending date should also be specified. 3  Leases often have a term of one year. 4  Rent.
Credit: 1950s unlimited. Specified cruising speeds for commercial airliners today range between about 480 and 510 knots, compared to 525 knots for the Boeing 707, a mainstay of 1960s jet travel. Why? âThe main issue is fuel economy,â says Aeronautics and Astronautics professor Mark Drela. âGoing faster eats more fuel per passenger-mile.
In the future, a descendent of the Concorde may earn the title of fastest commercial plane. A prototype that could fly before 2020 is said to cruise at 1,350 mph (2,173 kph), or twice the speed of sound, whisking a dozen wealthy passengers from London to Sydney in a mere four hours.