Load:
Dead.—The structure, power plant, and essential accessories of an aircraft. Included in this are the water in the radiator, tachometer, thermometer, gauges, airspeed indicator, levels, altimeter, compass, watch, and hand starter.
Full.—The total weight of an aircraft when loaded to the maximum authorized loading of that particular type.
Useful.—The excess of the full load over the dead-weight of the aircraft itself. Therefore useful load includes the crew and passengers, oil and fuel, electric-light installation, chart board, gun mounts, bomb storage and releasing gear, wireless apparatus, etc.
Loading: See Wing loading.
Lobes: Bags at the stern of an elongated balloon designed to give it directional stability.
Longeron: See Longitudinal.
Longitudinal: A fore-and-aft member of the framing of an airplane body or of the floats, usually continuous across a number of points of support.
Loop, A: An aerial maneuver in which the airplane describes an approximately circular path in the plane of the longitudinal and normal axes, the lateral axis remaining horizontal, and the upper side of the airplane remaining on the inside of the circle.
Marouflage: The process of wrapping and winding wooden parts in cloth.