Lesson 03 · Free Fundamentals · Energy management

High and Fast

Manage energy, not altitude alone

Level: Fundamentals
Estimated time: 10 minutes
Access: Free

Altitude and airspeed are two forms of energy. When both are high, solving only the altitude error can make the speed problem worse.

Important. For hobby flight simulation only — not real-world flight or ground instruction, operational guidance, or a flight-planning tool.

CUE is a recreational consumer-simulation product. It is not FAA-approved training, certification preparation, medical advice, an aircraft operating manual, or a substitute for current regulations and guidance, official charts and weather, an approved AFM/POH, aircraft checklists, air traffic control instructions, or instruction from an appropriately qualified professional. Never use CUE to operate, dispatch, maintain, diagnose, or make decisions concerning an actual aircraft. Simulated aircraft, controls, avionics, weather, traffic, navigation data, and procedures may be simplified, incomplete, inaccurate, or obsolete and may differ materially from real equipment and current requirements. Completion confers no certificate, endorsement, currency, proficiency, authorization, or qualification. Real-world aviation can cause serious injury, death, and property loss. Use current authoritative sources and qualified professionals for any actual aviation activity.

Before you make the call

What you will learn

Assess altitude, speed, and remaining distance together.
Distinguish losing altitude from dissipating total energy.
Recognize when an assigned restriction needs to be renegotiated.

Use your aircraft’s descent and speed-brake guidance before this exercise. Some aircraft have speed, flap, altitude, autopilot, or configuration restrictions on drag devices. This lesson does not authorize a particular device position or configuration change.

The numerical scenario is a deliberately demanding planning problem: 7,500 feet of altitude to lose over 22 nautical miles, plus a reduction from 250 to 210 knots. Whether it is achievable depends on aircraft performance, wind, configuration, and the exact restriction. The correct response includes reassessing feasibility; it does not promise that drag will rescue every descent.

For hobby flight simulation only — not real-world flight or ground instruction, operational guidance, or a flight-planning tool. Use your simulator aircraft’s documentation for settings and procedures.