Southeast Washington in Washington, District of Columbia — The American Northeast (Mid-Atlantic)
Ship's Propeller, Airplane Propeller, Truck Wheel
The helical blades of the ship's propeller force water backward. The reaction drives the ship forward. Additional drive is provided by the suction created on the forward face of the screw blades.
Propeler and rudder of a Liberty ship.
Library of Congress, LC-LY0W33-034521-ZC Transportation Walk
The propeller, like the turbine-powered fan in the modern jet engine, forces air backward. The reaction pushes the aircraft forward and the flow of air over the wings provides upward lift to sustain flight.
Three-bladed propeller on a Mooney Ovation. Mooney Airplane Company.
Gift of Hartzell Propeller, Inc.,
Wheels with axles are rotating levers. The force that turns the axle makes the outer edge of a wheel move farther and faster, propelling vehicles along roads and tracks.
Tires on dump truck, Shasta Dam, California, 1942.
Library of Congress, LC-USF34-072986-D
Erected by United States Department of Transportation.
Location. 38° 52.582′ N, 77° 0.194′ W. Marker is in Southeast Washington, District of Columbia Touch for map. Marker is at or near this postal address: 1200 New Jersey Avenue SE, Washington DC 20003, United States of America.
Other nearby markers. At least 8 other markers are within walking distance of this marker. 1927 (here, next to this marker); 1926 (here, next to this marker); Taxiway Guidance Sign, Crossing Gate and Flashing Light Signal, Channel Marking Buoy (here, next to this marker); 1925 (a few steps from this marker); 1922 (a few steps from this marker); 1932 (a few steps from this marker); 1923 (a few steps from this marker); 1937 (a few steps from this marker). Touch for a list and map of all markers in Southeast Washington.
Categories. • Air & Space • Roads & Vehicles • Science & Medicine • Waterways & Vessels •
Credits. This page was last revised on January 20, 2018. This page originally submitted on January 18, 2018, by Devry Jones of Washington, District of Columbia. This page has been viewed 59 times since then and 2 times this year. Photos: 1, 2, 3. submitted on January 18, 2018, by Devry Jones of Washington, District of Columbia. • Bill Pfingsten was the editor who published this page.