Directory of U.S. Military Rockets and Missiles
Appendix 4: Undesignated Vehicles
Tern
 
Copyright © 2005 Andreas Parsch

BAI XPV-1 Tern

The development of the Tern low-cost mini-UAV was originally begun by H-Cubed Corporation, but the program was acquired by BAI Aerosystems in 1993. Use by the U.S. military in the late 1990s was limited to a few examples for research purposes. Tern UAVs were modified by the U.S. Army for fiber-optic guidance to act as a surrogate fiber-optic guided missile (FOG-M). Other Army research Terns evaluated NBC (Nuclear/Biological/Chemical) sensor payloads. In 2001, the Tern was modified into the XPV-1 tactical UAV for special operations.

The Tern is powered by a two-stroke piston engine and is equipped with a conventional tricycle undercarriage for wheeled take-off and landing. In the XPV-1, the landing gear is fitted with relatively large low-pressure tyres and electronically actuated brakes for operations on rough terrain. The UAV is equipped with a state-of-the-art GPS waypoint navigation system and a microwave datalink to transmit video imagery and other sensor data to the operator. Standard payload are forward and side-looking color TV cameras. Maximum payload capacity is 1.4 kg (3 lb) in the nose and 10 kg (22 lb) under the body. Options include a BAI pan/tilt/zoom TV camera, a BAI pan/tilt IR imager, jammers, and other types of intelligence gathering sensors.

Photo: NASA
Tern


The XPV-1 Tern was first used operationally in 2001 by the U.S. Navy in Afghanistan to support Special Operation Forces. The UAV was fitted with a belly-mounted dispenser to drop an unattended sensor. A total of 65 XPV-1 UAVs have been delivered to the U.S. military forces.

Designation Note: The significance of the XPV-1 is not known, but it is most likely a company designator and not a military nomenclature. As a mini-UAV, the Tern should receive an official RQ-nn MDS designation.

Specifications

Note: Data given by several sources show slight variations. Figures given below may therefore be inaccurate!

Data for XPV-1 Tern:

Length2.71 m (8 ft 10.8 in)
Wingspan3.45 m (11 ft 4 in)
Height1.02 m (3 ft 4 in)
Weight59 kg (130 lb)
Speedmax: 125 km/h (78 mph); cruise: 84 km/h (52 mph)
Ceiling3000 m (10000 ft)
Range75 km (40 nm)
Endurance4 h
Propulsion3W piston engine; 9 kW (12 hp)

Main Sources

[1] Kenneth Munson (ed.): "Jane's Unmanned Aerial Vehicles and Targets, Issue 15", Jane's, 2000
[2] "Unmanned Aircraft Systems Roadmap, 2005-2030", Office of the Secretary of Defense, August 2005
[3] BAI Website


Back to Directory of U.S. Military Rockets and Missiles, Appendix 4





Last Updated: 1 September 2005