VistaCCD vs Pilotflows

PCA Engineers brings preliminary design of turbo compressor impellers to your fingertips. VistaCCD gives users the key dimensions and achievable efficiency for any turbo compressor stage operating with perfect gas. Taking as constraints the target design point performance and gas inlet conditions, VistaCCD performs a meanline design calculation using well-validated empirical relationships for work factor and achievable efficiency, corrected for Reynolds number and tip clearance effects. The user can vary input parameters to optimise performance within specific dimensional constraints, guided by the visual feedback from the efficiency correlation and the 2D sketch of the impeller. This app will certainly be of interest to engineers involved in developing new compressor designs. Equally it will be relevant to those applying turbo compressors to turbochargers, industrial compressors and small gas turbines, giving users a better appreciation of the impact of design constraints.

Pilotflows is a modern aviation logbook built for pilots, student pilots, skydivers, and flight schools who want a structured, reliable, and easy way to manage their flying history and qualifications in one place. It replaces paper logbooks and scattered spreadsheets with a centralized digital system designed around real pilot workflows—fast to use, precise in detail, and suitable for both casual flying and professional training environments. Key features include: • Flight logging with detailed entry structure (aircraft, route, conditions, roles, flight time breakdowns, remarks) • Fast input flow designed for cockpit-adjacent or post-flight logging • Automatic totals and flight hour calculations across categories • Currency and recency tracking to stay compliant and current • Personal aviation profile with complete flight history overview • Offline mode so flights can be logged without connectivity and synced later Pilotflows also acts as a complete record system for your aviation credentials: • Storage of licenses, ratings, and endorsements • Tracking of certificate validity and expiry dates • Secure document uploads for medical certificates, training records, and official documents • Centralized view of all qualifications linked to your pilot profile For progression and insight, Pilotflows provides clear visibility into your flying experience: • Breakdown of hours by aircraft type, role, and conditions • Progress tracking over time for training and personal development • Clean summaries that help you understand your overall flight experience at a glance The system is designed to support different types of users: • Private pilots managing personal flight history • Student pilots tracking training progress toward licenses • Commercial pilots maintaining ongoing currency and documentation • Skydivers logging jumps and operational experience • Flight schools structuring student records and training progression Pilotflows focuses on accuracy, clarity, and long-term reliability. Every feature is designed to reduce administrative overhead and give pilots a clear, complete, and always up-to-date view of their aviation journey. Apple EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/