HENSYNTH range and endurance screening for electric cruise

Two requirements, one cruise point

Range and endurance on the Requirements page are separate caps. In screening they are related through the cruise speed and altitude you saved. For electric architectures the product help text states range as cruise speed times endurance when energy limits flight time, and endurance from usable battery energy divided by electrical power demand at cruise.

Enter range in metres and endurance in seconds — the form labels include that convention so you do not mix kilometres with seconds by mistake.

Electric path (conceptual)

The ? modal on the requirements run describes the electric chain without naming fake efficiencies for your project:

• Usable energy after reserve SOC reduces what is available for the mission.
• Shaft power follows drag times speed, divided by propeller efficiency.
• Motor and ESC efficiency sit between battery and shaft power in the bookkeeping path.
• Endurance is usable energy over electrical power; range multiplies by cruise speed for the electric case in the documented formula block.

No wind, no loiter orbit model beyond the cruise segment implied by requirements — screening stays explicit about what is in and out.

Fuel aircraft on the same report

When propulsion kind is piston or jet, the same metric tiles may show range and endurance from Breguet-style relationships using cruise L/D, specific fuel consumption, and weight ratio terms the engine stores. The help modal switches formula text to match the branch. Your compliance rows still compare predictions to the numeric targets you entered regardless of propulsion kind.

Maximum endurance synthesis style

On the Synthesize page, the maximum endurance style biases battery fraction and sizing toward the loiter-friendly corner of the search grid. It is one of four style searches — compare its card predictions to the balanced card before you apply geometry. None of the cards replace a full Run screening pass on the aircraft you keep.

Reading FAIL on range or endurance

A FAIL on range with PASS on endurance often means speed–distance inconsistency with your caps, or insufficient usable energy after reserve. A FAIL on both may point to battery max, wing area, or drag build-up. Use metric help and reasoning findings on the same panel; do not adjust requirements until you understand which input the engine flagged as most restrictive in feasibility.

Not flight-test range

Predicted range and endurance are conceptual performance from the stored model. They are not demonstrated aircraft range, not headwind-corrected mission analysis for operations, and not validated against wind tunnel or flight test in HENSYNTH by default.

In simple words: what this page is for

How HENSYNTH predicts range and endurance against requirements — electric energy bookkeeping, cruise speed link, reserve SOC, and compliance rows without wind claims.

This lesson exists because aircraft teams often jump to heavy CFD before the mission is even closed. HENSYNTH range and endurance screening for electric cruise keeps the focus on conceptual screening you can explain in review.

Why the topic matters

Engineers lose time when a title sounds clear but the page only sketches the idea. This article expands HENSYNTH range and endurance screening for electric cruise so you can answer three questions without jargon: what is the idea, when do you use it, and how do you check it in a HENDOI product.

Read the sections above for the core definitions. Use the steps below to move from reading into a real project trail you can share with a teammate.

How to apply this in HENDOI

In practice: open HENSYNTH after you sign in, set or confirm geometry, write mission targets on Requirements, Run screening, then read PASS / FAIL with margins. Use Mission, Performance, Trades, Optimize and Reports only after the screening snapshot exists. Numbers come from stored runs — the product does not invent missing values.

If you still need the wing section itself, finish that work in HENFOIL first, then continue the aircraft in HENSYNTH. One HENDOI account covers both. Plans stay Student USD 9, Professional USD 29 and Team USD 89.

What this page will not claim: HENSYNTH is conceptual and preliminary screening. It is not wind-tunnel data, not certification CFD, and not a compliance certificate for an authority. PASS / FAIL means requirement-versus-prediction inside the product.

Checklist before you leave this page

• Can you state the idea of HENSYNTH range and endurance screening for electric cruise in one sentence?
• Do you know which product owns the next action — HENSYNTH or HENFOIL?
• Will every number you keep carry a method label or a stored-run source?
• If you are new here, have you opened Register or Login?

Related reading on this site

• HENSYNTH candidate cards, Use this aircraft, and CAD
• HENSYNTH compliance matrix: PASS, FAIL, and margin
• HENSYNTH download and share technical reports
• HENSYNTH Geometry page: wing, fuselage, and tails
• All HENDOI blog articles
• HENSYNTH product page
• HENFOIL product page
• Pricing — Student, Professional & Team
• FAQ
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