Terretrans [2X Fuel Economy] Aircraft

Product of Terreplane Technologies, LLC

InnoTrans 2018

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4 Bingham
Columbia, MO 65203
United States of America

InnoTrans 2018
  • Railway Technology Railway Technology

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Product description

It is no surprise that technology which makes trains fly, can make airplanes fly better.

How much better?

An easy 20% increase in fuel economy, and eventually a 100% increase in fuel economy. Also, shorter wingspans and much shorter takeoff distances eliminate the need for dedicated airports. Twenty-passenger flying busses could take off and land on 0.2 km sections of gated-off highways.

LiftPath technology allows aircraft fuselages to generate lift more efficiently than wings. This opportunity exists because typical tubular-shaped fuselages generate near-zero lift. Minor changes in fuselages create substantial lift with minor to no increase in drag. The benefit outweighs the cost.

Preliminary estimates of lift-to-drag (L:D) ratios attainable with fuselages are between 8 and 16 with little to no increase in fuselage drag. Aircraft wings have L:D ratios in excess of 40. When tubular fuselages are used with these wings, resulting L:D ratios are typically 14-18 (today's standard). Preliminary L:D ratio estimates for aircraft with both wings and lifting-body fuselages are from 23 to 30.

Benefits include:
  • Fuel savings up to $100 billion per year,
  • Up to a 50% reduction in aircraft costs including battery-powered aircraft and fewer engines, and
  • Up to 70% reduction in total transit time by operation in a mode resembling today's bus service (no long lines, no security, no need to show up at an airport over 90 minutes before departure).
The increased L:D ratios enable air transit with takeoff and landing distances less than 200 meters, which could eliminate the need for airports for much service (similar to the manner in which helicopters do not require airports). Unlike slower helicopters that have very limited ranges; Terretrans aircraft will have ranges and speeds consistent with corresponding prop and jet aircraft. Fully battery-powered Terretrans aircraft would be comparable to today's turbine engine aircraft.

THE PRODUCT (Terretrans)
New patent-pending aircraft fuselage designs are an off-shoot of research and development on the Terretrane tethered glider. The goal of Terretrane is tethered-glider flight on ziplines with total vehicle width less than 4 meters. For the Terretrans aircraft, the advanced fuselage designs are incorporated on aircraft with wider wingspans and motors/engines.

Efficient flight occurs in three steps: 1) bending of air downwards, 2) transfer of pressure generated from downward bending of air to relatively flat surfaces, and 3) preserving the lower/higher pressure on those flat surfaces. Typical tubular fuselage aircraft have two major flaws: 1) they bend too much air upwards (in addition to downwards) and 2) there are inadequate flat surfaces for generating lift efficiently.

LiftPaths are lift-generating paths on upper and lower surfaces of fuselages. These surfaces are:
1) flat-to-concave for the width of the fuselage,
2) oriented at a pitch of 0.5 to 2 degrees when cruising, and
3) for most of the length of the fuselage.

The rest of the fuselage is designed to create higher/lower pressures on the LiftPaths with minimal increase in drag. The interactions of the LiftPaths with wings and lateral stabilizers is critical.

Our world's common explanations of flight are in error. Bernoulli was not in error, but explanations of flight based on Bernoulli's work are in error. By coincidence, the respective interpretations of lift in terms of higher velocity match experimental data on pressure. It is coincidence and not correctness. It is an interpretation that has hindered advancement.

Previous paragraphs provide the correct axioms/laws to explain flight.

Multiple patentable claims on this technology have a patent-pending status:
• Provisional USXXX, Tethered-Glider Related Inventions (anticipated publication, May 2019).

See terretrans.com for the latest updates and extended discussions.