Lexington Park in St. Mary's County, Maryland — The American Northeast (Mid-Atlantic)
Boeing Vertol CH-46E Sea Knight
The "Battle Phrog" The Sea Knight was developed as an assault helicopter for the U.S. Marine Corps. It featured tandem rotors (one in front, one in back) that folded for shipboard stowage. Although other helicopters with tandem rotors preceded it, the CH-46 was the first such type to be powered by turbine engines. CH-46s equipped both the Navy and Marine Corps for 50 years, serving in every conflict of its era. Sea Knights were also operated by Canada, Japan, Sweden, and Saudi Arabia. The CH-46E before you is an example of the final version of the Sea Knight line. (The Sea Knight was affectionately known as the "Phrog" because of its frog-like appearance when viewed head-on and the green paint it wore early in its career.)
Our Display Aircraft Bureau Number 152578 was delivered to the Navy as a CH-46D. Along with over 275 other CH-46Ds, our Phrog was converted into a CH-46E in the late 1970s. That process brought the new avionics, structural enhancements, composite rotor blades, and more powerful engines to the aircraft. PRNAM's "Battle Phrog" served with HX-21 (Rotary Wing Aircraft Test Squadron, NAS Patuxent
Primary Mission: Medium-lift assault transport, Search and Rescue
Crew: Pilot, Copilot, Crew Chief/Loadmaster including Gunners & Rescue Swimmers
U.S. Service Timeline (H-46 Series): 1964 - 2015
Dimensions: 45.7 fuselage length, 51.0 ft rotor diameter
Max. Gross Weight: 24,300 lb
Propulsion: Two General Electric T58-GE-16 turboshaft engines
Max. Operating Speed: 168 MPH (sea level)
Payload/Armament: Up to 5000 lb cargo or 17 combat-equipped troops; window-mounted .30- and .50-caliber machine guns
Erected by Patuxent River Naval Air Museum.
Topics. This historical marker is listed in these topic lists: Air & Space • Military.
Location. 38° 16.562′ N, 76° 27.679′ W. Marker is in Lexington Park, Maryland, in St. Mary's County. Marker can be reached from Three Notch Road (Maryland Route 235) just north of Buse Road, on the right when traveling north. Touch for map. Marker is at or near this postal address: 22156 Three Notch Road, Lexington Park MD 20653, United States of America. Touch for directions.
Other nearby markers. At least 8 other markers are within walking distance of this marker. Bell TH-1L Iroquois (a few steps from this marker); Kaman SH-2G Super Seasprite (a few steps from this marker); Lockheed S-3B Viking (within shouting distance of this marker); Boeing X-32B JSF Demonstrator (within shouting distance of this marker); Grumman E-2B Hawkeye (within shouting distance of this marker); McDonnell Douglas F/A-18A Hornet (within shouting distance of this marker); Grumman S-2D Tracker (within shouting distance of this marker); North American T-39D Sabreliner (within shouting distance of this marker). Touch for a list and map of all markers in Lexington Park.
Credits. This page was last revised on September 1, 2019. It was originally submitted on September 1, 2019, by Devry Becker Jones of Washington, District of Columbia. This page has been viewed 63 times since then. Photos: 1, 2. submitted on September 1, 2019, by Devry Becker Jones of Washington, District of Columbia.