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£82.99 inc VAT

CRP-5W Flight Computer with Windarm

SKU: NCR051/Share Categories: , ,

Description

The CRP 5 Flight Computer is a widely used aviation navigation tool, especially for calculating flight performance, fuel consumption, and other important flight parameters. It’s a circular slide rule designed to aid pilots in flight planning and in-flight calculations. Below are some frequently asked questions (FAQs) about the CRP 5 Flight Computer:

1. What is the CRP 5 Flight Computer?

  • The CRP 5 is an aviation flight computer (also known as a flight planning calculator or E6B) used for performing various flight-related calculations, such as airspeed, heading, wind correction, distance, fuel burn, and more. It is a circular slide rule with two rotating disks, used by pilots for navigation and performance calculations.

2. How do you use the CRP 5 Flight Computer?

  • The CRP 5 is used by aligning specific scales on the computer to perform calculations. For example, you might use it to compute wind correction angles, ground speed, or fuel consumption by rotating the inner disk to match the values of your flight parameters.
  • Specific functions are typically accessed by setting the relevant value on the inner disk and reading the result on the outer scale, or by setting parameters like wind speed and direction for crosswind correction.

3. What types of calculations can the CRP 5 help with?

The CRP 5 is equipped to assist with several calculations, including:

  • Wind Correction Angle: To adjust your heading based on the wind direction and speed.
  • Ground Speed: To calculate your effective speed over the ground, considering wind.
  • Fuel Consumption: To determine how much fuel will be used for a given distance, time, or flight profile.
  • True Airspeed (TAS): Using altitude and temperature to correct indicated airspeed (IAS).
  • Time and Distance: To compute time to reach a destination based on speed and distance.
  • Altitude Corrections: For temperature deviations and to adjust for pressure altitude.

4. What are the main components of the CRP 5?

  • The CRP 5 consists of two overlapping rotating discs:
    1. Outer disk: Contains various scales for calculating time, distance, and speed, among other things.
    2. Inner disk: Contains additional scales for wind correction, fuel consumption, and other performance parameters.
  • The scales are labeled for different units (e.g., nautical miles, gallons per hour, knots, etc.), and by rotating the inner disk relative to the outer one, you can perform the necessary calculations.

5. What is the CRP 5 used for in flight planning?

  • Pilots use the CRP 5 during flight planning to calculate distances, estimated times of arrival (ETAs), fuel consumption, and the effects of wind on a flight. It is a critical tool for pre-flight planning and in-flight adjustments, helping pilots optimize flight routes, fuel efficiency, and time management.

6. Is the CRP 5 flight computer still used today?

  • Yes, the CRP 5 is still used today by pilots, especially those flying general aviation aircraft. While modern avionics and flight planning software can handle many of the same calculations, many pilots still appreciate the CRP 5’s simplicity and its role as a backup tool. It is also a great learning tool for student pilots to understand fundamental flight principles.

7. How do I read the scales on the CRP 5?

  • The CRP 5 includes multiple scales, such as:
    • Speed/Time/Distance scales: These are used to calculate travel times and distances based on speed.
    • Wind Correction scales: Used to compute wind drift and correct headings.
    • Fuel Consumption scales: Helps you calculate the fuel required for a flight based on time and consumption rate.
  • To read the scales, rotate the inner disk to align values with the outer disk. Each scale has specific units (e.g., knots, nautical miles, gallons per hour) that will appear as you adjust the disks.

8. Can I use the CRP 5 in cloudy or low-visibility conditions?

  • Yes, the CRP 5 is a manual device and doesn’t rely on any external signals or electronics. As long as you can visually read the scales, you can use it under any conditions, including cloudy or low-visibility weather.

9. What are the advantages of using the CRP 5 over digital tools?

  • No batteries required: It’s a mechanical device, so you don’t have to worry about power loss or malfunctions.
  • Quick and reliable: Once you’re familiar with it, you can perform calculations quickly, even in stressful situations.
  • Educational value: It helps pilots learn the fundamentals of flight planning and navigation, providing an understanding of the relationships between speed, time, distance, and wind.
  • Backup: It can serve as a backup tool in case of avionics failure or when electronic flight computers are unavailable.

10. How do I maintain my CRP 5?

  • The CRP 5 is quite durable, but to keep it in good working condition:
    • Keep it clean: Wipe the disks with a soft, dry cloth to prevent dust and debris buildup.
    • Avoid dropping: Though rugged, dropping the CRP 5 may affect its accuracy or damage the scales.
    • Store properly: Keep it in a protective case or folder to prevent scratches and protect the disks.

11. What is the cost of a CRP 5 Flight Computer?

  • The cost of the CRP 5 typically ranges from $50 to $150 USD, depending on the retailer and whether it includes any additional features or accessories (such as a carrying case).

12. Can the CRP 5 be used for both VFR and IFR flight planning?

  • Yes, the CRP 5 can be used for both Visual Flight Rules (VFR) and Instrument Flight Rules (IFR) planning. While more complex IFR planning may rely on computerized flight planning systems, the CRP 5 is still valuable for basic calculations such as wind correction, time, distance, and fuel management under both VFR and IFR conditions.

13. What is the difference between the CRP 5 and other flight computers like the E6B?

  • The CRP 5 is similar in function to the E6B, another popular aviation flight computer. Both are mechanical devices used for flight planning calculations, but there might be slight differences in design or scale layout. The CRP 5 is often praised for its ease of use and durability, but both the CRP 5 and E6B are widely used in aviation for similar purposes.

The CRP-5W is manufactured to the exacting standards demanded by commercial pilot training organisations to give a lifetime’s performance.

Designed particularly for the professional pilot, it includes all necessary functions for the commercial and airline transport pilot examinations. Circular slide rule side with clear durable cursor. For calculation and conversion of temperature, time, distance, volume, altitude, speed, weight, fuel, endurance, multiplication and division, 1 in 60 rule, compressibility correction etc. Coloured scales and lettering enhance operation and clarity.

Wind triangle side incorporating sliding scale with speed range of 40-1000 and measuring scales on outside edges of 1:500,000 NM, 1:250,000 NM, Inches and mm. Clear rotating disc for lead pencil plotting.

For calculation of heading and groundspeed, wind velocity, head and crosswind components etc.

The CRP-5W has a wind arm on the wind triangle side to prevent the necessity of plotting with a pencil.

NATO Stock Number – 6605-99-378-4684

– MADE IN THE UK –

CRP-5 Booklet

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