Add Boom Supersonic cheatsheet HTML page

D David Veksler · 6 months ago 7013d29fff1497a0f41fcc20a78ac95485db5190
Parent: aa1ed9c62
Introduces a comprehensive HTML reference for Boom Supersonic, detailing the Overture airliner, XB-1 demonstrator, Symphony engine, specs, timeline, sustainability, and includes an interactive flight time calculator. Features modern styling, Bootstrap integration, structured data, and accessibility enhancements.

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+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <meta name="description" content="Comprehensive cheatsheet for Boom Supersonic, covering the Overture airliner, XB-1 demonstrator, Symphony engine, specs, timeline, and sustainability goals.">
+    <meta name="keywords" content="Boom Supersonic, Overture, XB-1, Symphony Engine, Supersonic Travel, Mach 1.7, Aerospace, Aviation Cheatsheet">
+    <meta name="author" content="David Veksler (AI Generated)">
+    <meta property="og:title" content="Boom Supersonic Cheatsheet: The Future of Speed">
+    <meta property="og:description" content="Detailed guide to Boom Supersonic's aircraft, technology, and roadmap. Includes interactive flight time calculator.">
+    <meta property="og:type" content="article">
+    <meta property="og:url" content="https://cheatsheets.davidveksler.com/boom-supersonic.html">
+    <meta property="og:image" content="https://cheatsheets.davidveksler.com/images/boom-supersonic.png">
+    <meta property="og:image:alt" content="Boom Supersonic Overture Aircraft Concept">
+    <meta name="twitter:card" content="summary_large_image">
+    <meta name="twitter:title" content="Boom Supersonic Cheatsheet">
+    <meta name="twitter:description" content="The future of Mach 1.7 travel. Overture specs, XB-1 details, and timeline.">
+    <meta name="twitter:image" content="https://cheatsheets.davidveksler.com/images/boom-supersonic.png">
+    
+    <title>Boom Supersonic Cheatsheet: The Future of Speed</title>
+    <link rel="canonical" href="https://cheatsheets.davidveksler.com/boom-supersonic.html">
+    <link rel="icon" href="data:image/svg+xml,<svg xmlns=%22http://www.w3.org/2000/svg%22 viewBox=%220 0 100 100%22><text y=%22.9em%22 font-size=%2290%22>✈️</text></svg>">
+
+    <!-- Bootstrap 5.3.3 CSS -->
+    <link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-QWTKZyjpPEjISv5WaRU9OFeRpok6YctnYmDr5pNlyT2bRjXh0JMhjY6hW+ALEwIH" crossorigin="anonymous">
+    <!-- Bootstrap Icons -->
+    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/[email protected]/font/bootstrap-icons.min.css">
+    
+    <!-- Google Fonts: Chakra Petch (Tech) and Inter (Body) -->
+    <link href="https://fonts.googleapis.com/css2?family=Chakra+Petch:wght@400;600;700&family=Inter:wght@300;400;600&display=swap" rel="stylesheet">
+
+    <style>
+        :root {
+            /* Theme Colors: Dark Aerospace */
+            --primary-bg: #050b14;
+            --secondary-bg: #0f1724;
+            --card-bg: #162030;
+            --text-main: #e0e6ed;
+            --text-muted: #94a3b8;
+            --accent-color: #00d4ff; /* Supersonic Blue */
+            --accent-hover: #00a3cc;
+            --highlight: #ffd700; /* Gold for premium/speed */
+            --border-color: #2d3b4e;
+            
+            --font-display: 'Chakra Petch', sans-serif;
+            --font-body: 'Inter', sans-serif;
+        }
+
+        body {
+            background-color: var(--primary-bg);
+            color: var(--text-main);
+            font-family: var(--font-body);
+            line-height: 1.6;
+        }
+
+        /* Typography */
+        h1, h2, h3, h4, h5, h6, .navbar-brand {
+            font-family: var(--font-display);
+            text-transform: uppercase;
+            letter-spacing: 1px;
+        }
+
+        h1 { font-weight: 700; color: var(--accent-color); }
+        h2.section-title {
+            color: var(--text-main);
+            border-bottom: 2px solid var(--accent-color);
+            padding-bottom: 10px;
+            margin-bottom: 25px;
+            display: inline-block;
+        }
+        
+        .lead { color: var(--text-muted); font-size: 1.1rem; }
+        .text-accent { color: var(--accent-color); }
+        .text-highlight { color: var(--highlight); }
+
+        /* Navigation */
+        .navbar {
+            background-color: rgba(5, 11, 20, 0.95);
+            backdrop-filter: blur(10px);
+            border-bottom: 1px solid var(--border-color);
+        }
+        .nav-link { color: var(--text-muted); transition: color 0.3s; }
+        .nav-link:hover, .nav-link.active { color: var(--accent-color); }
+        .navbar-toggler { border-color: var(--border-color); }
+        .navbar-toggler-icon { filter: invert(1); }
+
+        /* Cards */
+        .info-card {
+            background-color: var(--card-bg);
+            border: 1px solid var(--border-color);
+            border-radius: 8px;
+            padding: 20px;
+            margin-bottom: 20px;
+            transition: transform 0.2s, box-shadow 0.2s;
+        }
+        .info-card:hover {
+            transform: translateY(-2px);
+            box-shadow: 0 4px 15px rgba(0, 212, 255, 0.1);
+            border-color: var(--accent-color);
+        }
+        .card-header-custom {
+            display: flex;
+            align-items: center;
+            justify-content: space-between;
+            margin-bottom: 15px;
+        }
+        .card-icon {
+            font-size: 1.5rem;
+            color: var(--accent-color);
+            margin-right: 10px;
+        }
+        .summary {
+            font-size: 0.95rem;
+            margin-bottom: 15px;
+        }
+        .spec-tag {
+            background-color: rgba(0, 212, 255, 0.1);
+            color: var(--accent-color);
+            padding: 2px 8px;
+            border-radius: 4px;
+            font-size: 0.8rem;
+            font-weight: 600;
+            margin-right: 5px;
+        }
+
+        /* Buttons & Interactive */
+        .btn-accent {
+            background-color: transparent;
+            border: 1px solid var(--accent-color);
+            color: var(--accent-color);
+            font-family: var(--font-display);
+            transition: all 0.3s;
+        }
+        .btn-accent:hover {
+            background-color: var(--accent-color);
+            color: #000;
+        }
+        .details-toggle {
+            width: 100%;
+            text-align: left;
+            display: flex;
+            justify-content: space-between;
+            align-items: center;
+        }
+        .details-toggle::after {
+            content: '\F282'; /* Bootstrap Icons Chevron Down */
+            font-family: 'bootstrap-icons';
+            transition: transform 0.3s;
+        }
+        .details-toggle[aria-expanded="true"]::after {
+            transform: rotate(180deg);
+        }
+
+        /* Collapsible Content */
+        .collapse-content {
+            margin-top: 15px;
+            padding-top: 15px;
+            border-top: 1px solid var(--border-color);
+        }
+        .collapse-content ul { padding-left: 20px; }
+        .collapse-content li { margin-bottom: 5px; color: #ced4da; }
+
+        /* Timeline Styles */
+        .timeline {
+            position: relative;
+            padding-left: 30px;
+            border-left: 2px solid var(--border-color);
+        }
+        .timeline-item {
+            position: relative;
+            margin-bottom: 30px;
+        }
+        .timeline-item::before {
+            content: '';
+            position: absolute;
+            left: -36px;
+            top: 5px;
+            width: 14px;
+            height: 14px;
+            border-radius: 50%;
+            background-color: var(--accent-color);
+            border: 3px solid var(--primary-bg);
+        }
+        .timeline-date {
+            font-family: var(--font-display);
+            color: var(--accent-color);
+            font-weight: bold;
+            font-size: 0.9rem;
+        }
+
+        /* Flight Calculator */
+        #flight-calc {
+            background: linear-gradient(135deg, var(--secondary-bg), #1a2639);
+            border: 1px solid var(--accent-color);
+            padding: 25px;
+            border-radius: 10px;
+        }
+        .calc-result {
+            font-size: 1.5rem;
+            font-weight: bold;
+            color: var(--highlight);
+        }
+
+        /* Footer */
+        footer {
+            margin-top: 50px;
+            padding: 30px 0;
+            border-top: 1px solid var(--border-color);
+            text-align: center;
+            font-size: 0.9rem;
+            color: var(--text-muted);
+        }
+
+        /* Print Styles */
+        @media print {
+            body { background-color: #fff; color: #000; }
+            .info-card { border: 1px solid #000; break-inside: avoid; color: #000; background: #fff; }
+            .navbar, .btn-accent, .details-toggle::after { display: none; }
+            .collapse { display: block; }
+            h1, h2, h5 { color: #000; }
+            a { text-decoration: underline; color: #000; }
+            .calc-container { display: none; }
+        }
+    </style>
+    
+    <!-- JSON-LD Structured Data -->
+    <script type="application/ld+json">
+    {
+      "@context": "https://schema.org",
+      "@type": "TechArticle",
+      "headline": "Boom Supersonic Cheatsheet",
+      "description": "Comprehensive guide to Boom Supersonic's Overture airliner, XB-1 demonstrator, and Symphony engine.",
+      "author": {
+        "@type": "Person",
+        "name": "David Veksler (AI Generated)"
+      },
+      "publisher": {
+        "@type": "Organization",
+        "name": "David Veksler Cheatsheets"
+      },
+      "datePublished": "2025-12-02",
+      "dateModified": "2025-12-02",
+      "keywords": "Boom Supersonic, Overture, XB-1, Symphony Engine, Sustainable Aviation Fuel"
+    }
+    </script>
+</head>
+<body>
+
+    <!-- Navigation -->
+    <nav class="navbar navbar-expand-lg sticky-top">
+        <div class="container">
+            <a class="navbar-brand" href="#"><i class="bi bi-airplane-engines me-2"></i>Boom Supersonic</a>
+            <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNav">
+                <span class="navbar-toggler-icon"></span>
+            </button>
+            <div class="collapse navbar-collapse" id="navbarNav">
+                <ul class="navbar-nav ms-auto">
+                    <li class="nav-item"><a class="nav-link" href="#overture">Overture</a></li>
+                    <li class="nav-item"><a class="nav-link" href="#xb1">XB-1</a></li>
+                    <li class="nav-item"><a class="nav-link" href="#symphony">Symphony Engine</a></li>
+                    <li class="nav-item"><a class="nav-link" href="#timeline">Timeline</a></li>
+                    <li class="nav-item"><a class="nav-link" href="#calculator">Calculator</a></li>
+                </ul>
+            </div>
+        </div>
+    </nav>
+
+    <!-- Header -->
+    <header class="page-header py-5 text-center">
+        <div class="container">
+            <h1 class="display-4 mb-3">The Future of Speed</h1>
+            <p class="lead mx-auto" style="max-width: 700px;">
+                A comprehensive reference guide to <strong>Boom Supersonic</strong>, their mission to return commercial supersonic flight to the skies, and the technologies powering the <em>Overture</em> airliner.
+            </p>
+            <div class="mt-3">
+                <span class="badge bg-secondary me-2">Last Updated: Dec 2025</span>
+                <span class="badge bg-primary">Mach 1.7</span>
+                <span class="badge bg-success">100% SAF</span>
+            </div>
+        </div>
+    </header>
+
+    <main class="container" id="main-container">
+
+        <!-- Calculator Section (Prominent) -->
+        <section id="calculator" class="mb-5 calc-container">
+            <div class="row justify-content-center">
+                <div class="col-lg-10">
+                    <div id="flight-calc" class="text-center">
+                        <h3 class="mb-4"><i class="bi bi-speedometer2"></i> Supersonic Travel Time Calculator</h3>
+                        <p class="mb-4 text-muted">See how Overture (Mach 1.7) compares to current subsonic jets (Mach 0.8).</p>
+                        
+                        <div class="row g-3 align-items-center justify-content-center">
+                            <div class="col-md-6">
+                                <select class="form-select form-select-lg" id="routeSelect" aria-label="Select Route">
+                                    <option selected disabled>Choose a Route...</option>
+                                    <option value="3000,6:30">New York (JFK) ➔ London (LHR)</option>
+                                    <option value="4800,8:30">Tokyo (NRT) ➔ Seattle (SEA)</option>
+                                    <option value="2200,5:15">Los Angeles (LAX) ➔ Honolulu (HNL)</option>
+                                    <option value="3900,7:40">Miami (MIA) ➔ London (LHR)</option>
+                                    <option value="3400,7:00">New York (JFK) ➔ Frankfurt (FRA)</option>
+                                </select>
+                            </div>
+                        </div>
+
+                        <div class="row mt-4" id="calcResults" style="display: none;">
+                            <div class="col-md-4">
+                                <small class="text-muted text-uppercase">Current Flight Time</small>
+                                <div class="fs-3" id="currentInfo">--</div>
+                            </div>
+                            <div class="col-md-4">
+                                <small class="text-accent text-uppercase">Overture Time</small>
+                                <div class="calc-result text-accent" id="overtureInfo">--</div>
+                            </div>
+                            <div class="col-md-4">
+                                <small class="text-highlight text-uppercase">Time Saved</small>
+                                <div class="calc-result" id="savedInfo">--</div>
+                            </div>
+                        </div>
+                    </div>
+                </div>
+            </div>
+        </section>
+
+        <!-- Overture Section -->
+        <section id="overture" class="schema-container" data-section-id="overture">
+            <h2 class="section-title"><i class="bi bi-airplane-fill me-2"></i>Overture Airliner</h2>
+            <div class="row">
+                <!-- Core Specs -->
+                <div class="col-md-6 col-lg-4">
+                    <div class="info-card">
+                        <div class="card-header-custom">
+                            <h5>Core Specifications</h5>
+                            <i class="bi bi-sliders card-icon"></i>
+                        </div>
+                        <p class="summary">The flagship commercial airliner designed for speed, safety, and sustainability.</p>
+                        <div class="mb-3">
+                            <span class="spec-tag">Mach 1.7</span>
+                            <span class="spec-tag">4,250nm Range</span>
+                            <span class="spec-tag">64-80 Pax</span>
+                        </div>
+                        <button class="btn btn-accent btn-sm details-toggle" type="button" data-bs-toggle="collapse" data-bs-target="#specsDetails" aria-expanded="false">
+                            Technical Details
+                        </button>
+                        <div class="collapse collapse-content" id="specsDetails">
+                            <ul>
+                                <li><strong>Cruise Speed:</strong> Mach 1.7 (approx. 1,300 mph / 2,100 km/h) over water.</li>
+                                <li><strong>Overland Speed:</strong> Mach 0.94 (approx. 720 mph) - 20% faster than subsonic.</li>
+                                <li><strong>Range:</strong> 4,250 nautical miles (7,871 km).</li>
+                                <li><strong>Capacity:</strong> 64–80 Passengers (All Premium).</li>
+                                <li><strong>Length:</strong> 201 ft (61 m).</li>
+                                <li><strong>Wingspan:</strong> 106 ft (32 m).</li>
+                                <li><strong>Altitude:</strong> 60,000 ft (Cruising).</li>
+                                <li><strong>Takeoff Noise:</strong> Meets ICAO Chapter 14 levels (same as current widebodies).</li>
+                            </ul>
+                        </div>
+                    </div>
+                </div>
+
+                <!-- Design & Aerodynamics -->
+                <div class="col-md-6 col-lg-4">
+                    <div class="info-card">
+                        <div class="card-header-custom">
+                            <h5>Design & Aerodynamics</h5>
+                            <i class="bi bi-wind card-icon"></i>
+                        </div>
+                        <p class="summary">Advanced composite fuselage optimized for "Area Ruling" to minimize drag.</p>
+                        <button class="btn btn-accent btn-sm details-toggle" type="button" data-bs-toggle="collapse" data-bs-target="#aeroDetails" aria-expanded="false">
+                            Design Features
+                        </button>
+                        <div class="collapse collapse-content" id="aeroDetails">
+                            <p><strong>Gull Wings:</strong> Distinctive delta wing shape improves supersonic efficiency while maintaining low-speed stability for standard airport operations.</p>
+                            <p><strong>Composite Structure:</strong> Carbon fiber construction allows for complex aerodynamic shaping (fuselage tapering) impossible with aluminum.</p>
+                            <p><strong>4-Engine Layout:</strong> Uses 4 wing-mounted engines to balance weight and thrust requirements, removing the need for afterburners (quieter takeoff).</p>
+                        </div>
+                    </div>
+                </div>
+
+                <!-- Passenger Experience -->
+                <div class="col-md-6 col-lg-4">
+                    <div class="info-card">
+                        <div class="card-header-custom">
+                            <h5>Passenger Experience</h5>
+                            <i class="bi bi-person-workspace card-icon"></i>
+                        </div>
+                        <p class="summary">An all-business class configuration focused on productivity and comfort.</p>
+                        <button class="btn btn-accent btn-sm details-toggle" type="button" data-bs-toggle="collapse" data-bs-target="#paxDetails" aria-expanded="false">
+                            Cabin Features
+                        </button>
+                        <div class="collapse collapse-content" id="paxDetails">
+                            <ul>
+                                <li><strong>Configuration:</strong> 1-1 seating (every seat is an aisle and window).</li>
+                                <li><strong>Windows:</strong> Large personal windows for every passenger.</li>
+                                <li><strong>Screens:</strong> Large entertainment displays for flight data and media.</li>
+                                <li><strong>Atmosphere:</strong> Cruising at 60,000 ft offers smoother air (above turbulence) and a view of the curvature of the Earth.</li>
+                            </ul>
+                        </div>
+                    </div>
+                </div>
+            </div>
+        </section>
+
+        <!-- XB-1 Section -->
+        <section id="xb1" class="schema-container mt-4" data-section-id="xb1">
+            <h2 class="section-title"><i class="bi bi-jet fighter me-2"></i>XB-1 Demonstrator</h2>
+            <div class="row">
+                <div class="col-lg-8">
+                    <div class="info-card">
+                        <div class="card-header-custom">
+                            <h5>"Baby Boom" Technology Demonstrator</h5>
+                            <span class="badge bg-success">Status: FLOWN</span>
+                        </div>
+                        <p class="summary">The world's first independently developed supersonic jet, paving the way for Overture.</p>
+                        <div class="mb-3">
+                            <span class="spec-tag">Mach 2.2 Design</span>
+                            <span class="spec-tag">Carbon Fiber</span>
+                            <span class="spec-tag">First Flight: Mar 2024</span>
+                        </div>
+                        <button class="btn btn-accent btn-sm details-toggle" type="button" data-bs-toggle="collapse" data-bs-target="#xb1Details" aria-expanded="false">
+                            Read More
+                        </button>
+                        <div class="collapse collapse-content" id="xb1Details">
+                            <div class="row">
+                                <div class="col-md-6">
+                                    <h6>Key Stats</h6>
+                                    <ul>
+                                        <li><strong>Length:</strong> 62.6 ft.</li>
+                                        <li><strong>Wingspan:</strong> 21 ft.</li>
+                                        <li><strong>Engines:</strong> 3x GE J85-15.</li>
+                                        <li><strong>Crew:</strong> 1 Test Pilot.</li>
+                                    </ul>
+                                </div>
+                                <div class="col-md-6">
+                                    <h6>Achievements</h6>
+                                    <ul>
+                                        <li><strong>Maiden Flight:</strong> March 22, 2024 (Mojave Air & Space Port).</li>
+                                        <li><strong>Supersonic:</strong> Broke the sound barrier (Mach 1.0+) in test program (2025).</li>
+                                        <li><strong>Systems Validated:</strong>
+                                            <ul>
+                                                <li>Augmented Reality Vision System (replacing droop nose).</li>
+                                                <li>Digitally-optimized aerodynamics.</li>
+                                                <li>Engine air intake performance.</li>
+                                            </ul>
+                                        </li>
+                                    </ul>
+                                </div>
+                            </div>
+                        </div>
+                    </div>
+                </div>
+                <div class="col-lg-4">
+                    <div class="info-card text-center" style="background: linear-gradient(180deg, var(--card-bg) 0%, #000 100%);">
+                        <i class="bi bi-camera-video fs-1 text-muted"></i>
+                        <h5 class="mt-2">AR Vision System</h5>
+                        <p class="small text-muted">XB-1 uses cameras and screens instead of a moving "droop nose" (like Concorde) for runway visibility.</p>
+                    </div>
+                </div>
+            </div>
+        </section>
+
+        <!-- Symphony Engine Section -->
+        <section id="symphony" class="schema-container mt-4" data-section-id="symphony">
+            <h2 class="section-title"><i class="bi bi-fan me-2"></i>Symphony™ Engine</h2>
+            <div class="row">
+                <div class="col-md-12">
+                    <div class="info-card">
+                        <div class="row align-items-center">
+                            <div class="col-md-8">
+                                <div class="card-header-custom">
+                                    <h5>Purpose-Built Supersonic Propulsion</h5>
+                                    <span class="badge bg-warning text-dark">35,000 lbs Thrust</span>
+                                </div>
+                                <p>A bespoke medium-bypass turbofan engine designed specifically for Overture, replacing earlier plans to use Rolls-Royce derivatives.</p>
+                                <button class="btn btn-accent btn-sm details-toggle" type="button" data-bs-toggle="collapse" data-bs-target="#engineDetails" aria-expanded="false">
+                                    Engine Specs & Partners
+                                </button>
+                            </div>
+                            <div class="col-md-4 text-end d-none d-md-block">
+                                <i class="bi bi-gear-wide-connected" style="font-size: 4rem; opacity: 0.2;"></i>
+                            </div>
+                        </div>
+                        <div class="collapse collapse-content" id="engineDetails">
+                            <div class="row">
+                                <div class="col-md-6">
+                                    <h6>Technical Highlights</h6>
+                                    <ul>
+                                        <li><strong>Architecture:</strong> Twin-spool, medium-bypass turbofan.</li>
+                                        <li><strong>No Afterburner:</strong> Achieves supersonic cruise without fuel-guzzling afterburners.</li>
+                                        <li><strong>Intake:</strong> Axisymmetric supersonic intake (quiet & efficient).</li>
+                                        <li><strong>Turbine:</strong> Passively cooled high-pressure turbine.</li>
+                                        <li><strong>Maintenance:</strong> Designed for 25% more time-on-wing than derivatives.</li>
+                                    </ul>
+                                </div>
+                                <div class="col-md-6">
+                                    <h6>Development Team</h6>
+                                    <ul class="list-unstyled">
+                                        <li><i class="bi bi-check2-circle text-accent"></i> <strong>Design:</strong> Florida Turbine Technologies (FTT).</li>
+                                        <li><i class="bi bi-check2-circle text-accent"></i> <strong>Manufacturing:</strong> GE Additive (Colibrium) - 3D printed components.</li>
+                                        <li><i class="bi bi-check2-circle text-accent"></i> <strong>Assembly/MRO:</strong> StandardAero.</li>
+                                    </ul>
+                                </div>
+                            </div>
+                        </div>
+                    </div>
+                </div>
+            </div>
+        </section>
+
+        <!-- Partners & Sustainability -->
+        <section id="partners-eco" class="mt-4">
+            <div class="row">
+                <!-- Commercial Partners -->
+                <div class="col-md-6">
+                    <h2 class="section-title"><i class="bi bi-briefcase me-2"></i>Partners & Orders</h2>
+                    <div class="info-card">
+                        <p class="summary"><strong>130 Aircraft</strong> in Order Book (Orders + Pre-orders).</p>
+                        <ul class="list-group list-group-flush bg-transparent">
+                            <li class="list-group-item bg-transparent text-light"><i class="bi bi-building me-2"></i> <strong>United Airlines:</strong> 15 firm orders + 35 options.</li>
+                            <li class="list-group-item bg-transparent text-light"><i class="bi bi-building me-2"></i> <strong>American Airlines:</strong> 20 firm orders + 40 options.</li>
+                            <li class="list-group-item bg-transparent text-light"><i class="bi bi-building me-2"></i> <strong>Japan Airlines (JAL):</strong> Strategic partner & investor (20 pre-orders).</li>
+                        </ul>
+                    </div>
+                </div>
+                
+                <!-- Sustainability -->
+                <div class="col-md-6">
+                    <h2 class="section-title"><i class="bi bi-globe-americas me-2"></i>Sustainability</h2>
+                    <div class="info-card">
+                        <div class="card-header-custom">
+                            <h5>Net Zero Carbon</h5>
+                            <i class="bi bi-recycle card-icon text-success"></i>
+                        </div>
+                        <p class="summary">Overture is designed to run on <strong>100% Sustainable Aviation Fuel (SAF)</strong>.</p>
+                        <button class="btn btn-accent btn-sm details-toggle" type="button" data-bs-toggle="collapse" data-bs-target="#ecoDetails" aria-expanded="false">
+                            Green Initiatives
+                        </button>
+                        <div class="collapse collapse-content" id="ecoDetails">
+                            <ul>
+                                <li><strong>SAF Partners:</strong> Dimensional Energy, AIR COMPANY (CO2-to-fuel tech).</li>
+                                <li><strong>Goal:</strong> Net zero carbon emissions by 2025 (Operational) and for Overture fleet.</li>
+                                <li><strong>Noise:</strong> "Community Noise" compliant (subsonic over land, quiet takeoff).</li>
+                            </ul>
+                        </div>
+                    </div>
+                </div>
+            </div>
+        </section>
+
+        <!-- Timeline -->
+        <section id="timeline" class="schema-container mt-4" data-section-id="timeline">
+            <h2 class="section-title"><i class="bi bi-calendar-event me-2"></i>Roadmap</h2>
+            <div class="info-card">
+                <div class="timeline">
+                    <div class="timeline-item">
+                        <div class="timeline-date">2014</div>
+                        <p>Boom Supersonic founded by Blake Scholl.</p>
+                    </div>
+                    <div class="timeline-item">
+                        <div class="timeline-date">2020</div>
+                        <p>XB-1 Rollout.</p>
+                    </div>
+                    <div class="timeline-item">
+                        <div class="timeline-date">Mar 2024</div>
+                        <p class="text-white"><strong>XB-1 Maiden Flight</strong> (Mojave, CA).</p>
+                    </div>
+                    <div class="timeline-item">
+                        <div class="timeline-date">2024-2025</div>
+                        <p>Superfactory Construction (Greensboro, NC) & XB-1 Supersonic Tests.</p>
+                    </div>
+                    <div class="timeline-item">
+                        <div class="timeline-date">2026 (Target)</div>
+                        <p>Symphony Engine Full-Scale Core Tests.</p>
+                    </div>
+                    <div class="timeline-item">
+                        <div class="timeline-date">2027 (Target)</div>
+                        <p>Overture Aircraft Rollout.</p>
+                    </div>
+                    <div class="timeline-item">
+                        <div class="timeline-date">2029-2030 (Target)</div>
+                        <p class="text-accent"><strong>Type Certification & Commercial Entry into Service.</strong></p>
+                    </div>
+                </div>
+            </div>
+        </section>
+
+    </main>
+
+    <footer>
+        <div class="container">
+            <p>&copy; 2025 Boom Supersonic Cheatsheet (Unofficial). All trademarks belong to Boom Technology, Inc.</p>
+            <p class="small">Information is based on publicly available data as of December 2025. Timelines are subject to change.</p>
+            <a href="https://boomsupersonic.com/" target="_blank" class="text-accent text-decoration-none">Visit Official Boom Supersonic Website <i class="bi bi-box-arrow-up-right"></i></a>
+        </div>
+    </footer>
+
+    <!-- Bootstrap JS Bundle -->
+    <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.bundle.min.js" integrity="sha384-YvpcrYf0tY3lHB60NNkmXc5s9fDVZLESaAA55NDzOxhy9GkcIdslK1eN7N6jIeHz" crossorigin="anonymous"></script>
+
+    <!-- Interactive Script -->
+    <script>
+        document.addEventListener('DOMContentLoaded', function() {
+            // Calculator Logic
+            const routeSelect = document.getElementById('routeSelect');
+            const calcResults = document.getElementById('calcResults');
+            const currentInfo = document.getElementById('currentInfo');
+            const overtureInfo = document.getElementById('overtureInfo');
+            const savedInfo = document.getElementById('savedInfo');
+
+            routeSelect.addEventListener('change', function() {
+                const value = this.value;
+                if (!value) return;
+
+                const [distanceStr, durationStr] = value.split(',');
+                const distance = parseInt(distanceStr); // nm
+                
+                // Parse current duration "H:MM"
+                const [hrs, mins] = durationStr.split(':').map(Number);
+                const currentMinutes = (hrs * 60) + mins;
+
+                // Overture Calculation
+                // Cruise Mach 1.7 ~ 1120 knots
+                // Add taxi/climb/descent penalty (approx 30-45 mins fixed)
+                // Flight time = (Distance / 1120) * 60 + 40 mins penalty
+                // This is a rough approximation
+                
+                const speedKnots = 1120; // Mach 1.7 approx
+                const flightMinutes = Math.round((distance / speedKnots) * 60) + 40; 
+                
+                // Format times
+                const overtureHrs = Math.floor(flightMinutes / 60);
+                const overtureMins = flightMinutes % 60;
+                
+                // Calculate Savings
+                const savedMinutes = currentMinutes - flightMinutes;
+                const savedHrs = Math.floor(savedMinutes / 60);
+                const savedMinsRem = savedMinutes % 60;
+
+                // Update UI
+                currentInfo.textContent = `${hrs}h ${mins}m`;
+                overtureInfo.textContent = `${overtureHrs}h ${overtureMins}m`;
+                savedInfo.textContent = `${savedHrs}h ${savedMinsRem}m`;
+                
+                calcResults.style.display = 'flex';
+                
+                // Simple animation
+                calcResults.style.opacity = 0;
+                setTimeout(() => {
+                    calcResults.style.transition = 'opacity 0.5s';
+                    calcResults.style.opacity = 1;
+                }, 10);
+            });
+
+            // Initialize Tooltips
+            var tooltipTriggerList = [].slice.call(document.querySelectorAll('[data-bs-toggle="tooltip"]'))
+            var tooltipList = tooltipTriggerList.map(function (tooltipTriggerEl) {
+              return new bootstrap.Tooltip(tooltipTriggerEl)
+            })
+        });
+    </script>
+</body>
+</html>
\ No newline at end of file