“Bingo3 Fuel Sensors – an ideal companion to fuel flow sensors”
A brief WhitePaper by James Wiebe, CEO, Radiant Instruments
September 19, 2018
Modern experimental and certified general aviation aircraft commonly use fuel totalizers with fuel flow sensors in order to accurately gauge the amount of fuel used by the aircraft. When coupled with a known value of fuel prior to flight (for instance, by filling the aircraft or by visually examining the fuel level), the pilot has a very accurate indication of fuel left in the tanks at every point in the flight.
Additional information provided by a fuel probe of some sort usually fills the complete information required for safe flight. But that’s the problem – fuel probes keep running into trouble.
Bingo3 is an alternative to fuel probes which provides point certainty as to fuel level. Bingo3 is a fuel probe which senses the presence or absence of fuel at its installation point. Therefore, Bingo3 can be installed at whatever point the pilot wants a firm notification as to fuel remaining.
Why do it this way? Here’s some answers:
• Longer fuel probes are unavailable or very expensive.
• Older resistive probes are mechanical and wear out, costing time and money. They often simply work very poorly. Replacements are expensive.
• Capacitive probes also have a high failure rate, due to shorts, quality, and water contamination.
• All high quality fuel probes are expensive. Bingo3 isn’t!
• In our opinion, existing fuel probe technologies can’t provide the fuel point certainty that Bingo3 provides.
Here are two use cases:
A) Wing tank. In this scenario, Bingo3 is installed so that it warns the pilot when there is 45 minutes of fuel remaining in the tank. Bingo3 is shown installed on the side of the tank, and the height above bottom represents 45 minutes of fuel reserve in cruise flight. The actual positioning of the Bingo3 is determined by the aircraft owner’s desired warning point. Want more time? Place it higher. Want less of a warning? Place it lower. Want multiple warning points? Put 2 or more Bingo3 products in each tank, at different levels. Use the inboard panel of the tank; or use the outboard panel of the tank (for even earlier warning). Bingo3 does not care about its mounting position.
B) Header tank. In this scenario, Bingo3 is placed at a location where the header tank is no longer full. Therefore, the pilot has a few minutes warning (EG, change tanks or land) before fuel is exhausted. A typical installation spot in a header tank would be 80% of full capacity.
As mentioned, Bingo3 doesn’t care about mounting position. It uses an infrared emitter / sensor pair which detects the presence or absence of fluid on its facet surfaces. It is very small, easily installed, and very reliable. The following diagram shows various mounting positions and also invites usage of Bingo3 in other applications. Consider using Bingo3 at a top mounted location for showing full fueling.
Conclusion: Bingo3 is an excellent, easily installable, inexpensive device which provides critical fuel level information to pilots.