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Aircraft propellers convert the power produced by the aircraft’s engine into thrust. Most early manufacturers produced fixed-pitch propellers from wood. Most wood propellers were constructed from hardwoods such as walnut, birch, oak, or mahogany. #EnduranceEngines #AvGeek This tweet was posted on August 09, 2022.
Initially, aircraft propellers were created from single pieces of wood. As propeller technology advanced, manufacturers began to laminate thin layers of wood together. This prevented warping and enhanced strength. #EnduranceEngines #AvGeek This tweet was posted on August 09, 2022.
Often, a metal sheath was added to the leading edge of each aircraft propeller blade for extra durability. This helped protect the wood from damage by rocks and other debris that was common on the dirt airstrips of the 1910s and 20s. #EnduranceEngines #AvGeek This tweet was posted on August 09, 2022.
The Paragon Striker propeller on display was designed for use with a Curtiss OX-5 engine, like the one in this JN-4 Jenny, and was produced of oak by the American Propeller and Manufacturing Company (APMC), of Baltimore, Maryland. #EnduranceEngines #AvGeek This tweet was posted on August 09, 2022.
“Going the Distance: Endurance Aircraft Engines and Propellers of the 1910s and 20s” is on display, pre-security in the Aviation Museum and Library and online at: https://t.co/DGnv8hSoAF #EnduranceEngines #AvGeek #AviationHistory This tweet was posted on August 09, 2022.
In the early 1930s, Pan American Airways began planning for service across the oceans. San Francisco, which is 160 miles closer to Hawai’i than Los Angeles, was the chosen terminus for the Pacific route that required multiple island stops. #DefunctThursday #PanAm #AvGeek This tweet was posted on August 11, 2022.
It was reported that while at the school, Lillian Atwater caught a seagull in a net while her husband flew a hydroplane. She never earned a pilot’s license, and it remains unknown if she continued to fly after attending the school. #EarlyWomenAviators #AvGeek This tweet was posted on August 10, 2022.
Lillian Janeway Atwater (1890–1937) was the first woman to fly a hydroplane in the United States. In 1911, she began hydroplane pilot training with her husband William Atwater at the Curtiss School of Aviation in North Island, San Diego. #EarlyWomenAviators #AvGeek This tweet was posted on August 10, 2022.
Prior to 1935, the 2,400 miles from San Francisco to Honolulu represented the world’s greatest water gap along any viable aerial trade route. The next stop, Midway Island, lay 1,300 miles northwest of Hawai’i. #DefunctThursday #PanAm #AvGeek This tweet was posted on August 11, 2022.
“First Flights: Early Women Aviators and their Aircraft” is on display post-security in Terminal 3 and online at: https://t.co/cFAFpvsWKR #EarlyWomenAviators #AvGeek #AviationHistory #aviator #pilot #womeninaviation This tweet was posted on August 10, 2022.
On Nov. 22, 1935, a #PanAm Martin M-130 named China Clipper, lifted off and strained into the sky, threading its way under and over two partially built bridges as thousands cheered from shore for the first scheduled flight across the Pacific Ocean. #DefunctThursday #AvGeek This tweet was posted on August 11, 2022.
Pan Am’s Pacific route was extended to Macao and Hong Kong in 1937, making the total flying distance from San Francisco 8,746 miles. #DefunctThursday #PanAm #AvGeek This tweet was posted on August 11, 2022.
Tiny Wake Island was the vital link across the Pacific, as it broke the 2,690 miles from Midway to Guam into manageable segments. When first established in 1935, the route terminated in Manila, a whopping 8,210-mile one-way journey. #DefunctThursday #PanAm #AvGeek This tweet was posted on August 11, 2022.
In 1912, Law became the fifth woman in the U.S. to earn a pilot's license. During her flying career she set numerous records, including one for women’s altitude, and another for distance by either a male or female aviator in a flight from Chicago to New York in 1916. #avgeek This tweet was posted on August 16, 2022.
Ruth Law (1887-1970) was inspired to fly by her brother Rodman Law, a parachutist and stuntman. Orville Wright refused to train her because he believed women were not mechanically minded, so she instead persuaded Harry Atwood & Arch Freeman of Saugus, MA, to instruct her. #avgeek This tweet was posted on August 16, 2022.
“First Flights: Early Women Aviators and their Aircraft” is on display post-security in Terminal 3 and online at: https://t.co/cFAFpvsWKR #EarlyWomenAviators #AvGeek This tweet was posted on August 16, 2022.
See “The 1954 San Francisco International Airport Terminal” on display in the SkyTerrace in Terminal 2 and online at: https://t.co/1CYQBq5tPi The SkyTerrace located pre-security in Terminal 2 and is open Friday to Monday from 10 am to 6 pm. #SFO1954 #SFOHistory #AvGeek #airport This tweet was posted on August 24, 2022.
These boots were made for walking, but that’s not what they’ll do (anymore). Browse our online database to see some of the shoes in our collection: https://t.co/TAOP6INNmo #AvGeek #shoes #boots #collections #MuseumLife This tweet was posted on August 22, 2022.
Along with skyrocketing oil prices, the once profitable routes National operated became unprofitable under Pan Am, which flew its last flight on December 4, 1991. #PanAm #DefunctThursday #AvGeek This tweet was posted on August 25, 2022.
Although Pan American World Airways experienced unprecedented success in the 1960s and 70s, by the end of the 1980s the company was struggling. #PanAm #DefunctThursday #AvGeek This tweet was posted on August 25, 2022.
As Pan American was not licensed to operate domestic routes within in the United States, the company purchased National Airlines in 1980. This did not prove be a good financial takeover as the company would have liked. #PanAm #DefunctThursday #AvGeek This tweet was posted on August 25, 2022.
Captain Zoya Agarwal (@CaptainZoya) led an all-female crew for a record-breaking @AirIndia flight from @flySFO to Bengaluru over the North Pole to celebrate International Women’s Day in January 2021. #avgeek #WomeninAviation #WomensEqualityDay2022 This tweet was posted on August 26, 2022.
Her interview and life story is part of the @SFOMuseum collection through the Museum’s Oral History Program and serves to inspire future generations of girls and women to follow their dreams. #avgeek #WomeninAviation #WomensEqualityDay2022 #WomensEqualityDay This tweet was posted on August 26, 2022.
Don’t leave a condensation ring behind, put a coaster under your cold drink! Browse our online database to see almost 200 coasters in our collection: https://t.co/wYeQBHDtpj #avgeek #coaster #museum #collection This tweet was posted on August 29, 2022.
Airlines carefully conceived their chinaware, flatware, and glassware for presentation, utilization, storage, and durability. Manufacturers often created tableware bearing the airline’s service mark or logo, as well as other unique patterns. #AirlineMealSets #AvGeek #PaxEx This tweet was posted on October 21, 2022.
During the early years of commercial flight, the nourishment needs of passengers became a primary focus for nascent airlines. To provide a restaurant-style inflight dining experience, airlines also considered the tableware comprising the meal service set. #AirlineMealSets #AvGeek This tweet was posted on October 21, 2022.
In 1986, USAir, driven by other mergers taking place in the aviation industry, (Western airlines was purchased by Delta Air Lines and AirCal was bought by American Airlines) acquired PSA. PSA's last flight was on April 8, 1988. #DefunctThursday #PacificSouthwestAirlines #AvGeek This tweet was posted on October 21, 2022.
“More than a Meal” presents eight airline meal service sets from the 1960s to the 1980s, along with menus & images of inflight meal services from the time. See this exhibition pre-security in the Intl Terminal or online at: https://t.co/RZvuSbU32G #AirlineMealSets #AvGeek #PaxEx This tweet was posted on October 21, 2022.
Hangar No. This image was posted on October 25, 2022. #sfohistory #millsfield #airport #avgeek #aviationhistory
Our newest exhibition “More than a Meal: Airline Meal Service Sets, 1960s–80s” is now on display! This image was posted on October 21, 2022. #airlinemealsets #avgeek #paxex
Initially for temporary publicity, in 1969, Pacific Southwest Airlines or PSA began painting smiles on the nose of its aircraft. This image was posted on October 20, 2022. #defunctthursday #pacificsouthwestairlines #avgeek #aviationhistory
Early airlines, especially in the 1920s and 1930s, struggled to turn a profit without a lucrative airmail route contract. This image was posted on October 19, 2022. #paa #panamerican #panam #avgeek #aviationhistory
Our 1:10-scale cutaway model of a United Air Lines DC-8 was created by Pacific Miniatures to be a promotional presentation of the Jet Mainliner in miniature. This image was posted on October 18, 2022. #minimainliner #jetage #aircraftmodels #avgeek #united #dc8
Airmail became a driving force in the development of commercial aviation after World War I, and airmail envelopes and letters were instant souvenirs of new routes and first flights. This image was posted on October 12, 2022. #airmaildownunder #airmail #avgeek #philately
In 1949, Kenny Friedkin, a flight trainer and test pilot, formed Pacific Southwest Airlines or PSA, a commuter airline operating in California. This image was posted on October 06, 2022. #defunctthursday #pacificsouthwestairlines #avgeek #aviationhistory
Flown by Australian pilots Charles Kingsford Smith (1897–1935) and Charles Ulm (1898–1934), with navigation and radio operations performed by American crew members Harry Lyon (c. This image was posted on October 05, 2022. #enduranceengines #avgeek #aviationhistory #airplane