The payload bay had to be 17 feet ( 5.18 m ) wide by 13.5 feet ( 4.11 m ) high and 100 feet ( 30.5 m ) long with access through doors at the front and rear .
The cargo bay had to be 17 feet ( 5.18 m ) wide , 13.5 feet ( 4.11 m ) high and 100 feet ( 30.5 m ) long .