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Urban Air Mobility Glossary

Our UAM Glossary is a collaborative effort from many industry experts.

If you have suggestions of changes or new terms to be added,

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electric Short Take-off and Landing (eSTOL) vehicle

Electric short Take-off and landing aircraft (eSTOL) refers to the category of STOL aircraft that utilise battery technology, attaining propulsive power from electricity. eSTOL aircraft are able to take off and land on shorter than average runways.

 

Just like STOLs, they only need a short ground roll in order to achieve maximum take off speed to clear ground obstacles and become airborne. 

 

eSTOL developments

With continued developments in battery technology, it has become possible to electrify or hybridise the conventional design of STOLs, retaining the requirement of a short runway.

 

There have been several pilot trials for the implementation of eSTOLs within the commercial markets, looking at both passenger and  cargo transportations.

UAM implementation and certification 

 

When new aircraft are designed and developed their certification is mandatory for maintaining safety, security and airworthiness. Certification of novel vehicle designs can be a time-consuming and complex process.

 

eSTOLS provide a significantly smoother certification process as compared to electric vertical take-off and landing vehicles (eVTOLs) for example, as the baseline model (i.e. STOL) aircraft are not subject to as many critical hazards as with eVTOLs. Therefore, with the reduced risks of certification, there are potentially fewer barriers for the use of eSTOL in Advanced Air Mobility (AAM), including Urban Air Mobility (UAM), systems.

Source and suggested reading

  1. Airflow launches electric short-take-off and landing aircraft - AviTrader

  2. Metro Hop electric STOL plane can get airborne off a 25-meter runway - New Atlas

  3. Feasibility study of Short Take-off and Landing Urban Air Mobility Vehicles Using Geometry Programming - Christopher Courtin, Mich

  4. Meet the Hybrid eSTOL, a Whole New Category of Electric Aircraft - Robb Report

   5. Metro Hop