August 2011

Image


Model Aviation Volume 37, Number 7
Features include Top Gun Invitational Coverage, Build a 1965 Nats Winner, Learn How to Design in CAD, Mastering Procedure and Rudder Turns, Starting School Clubs, reviews, and more.

Document

The President's Perspective
The Inside Loop
Designing in CAD
Top Gun Invitational with Video
A 1960's Nats Winner - The Eclipse
Cover Selection Process
About the Cover:
Jet models are quite popular at Scale events and always get people’s attention at Top Gun. Jets and their pilots are normally stereotyped as the elite and fuel a craving among aeromodelers for the knowledge and skill necessary to handle these often complex yet powerful aircraft. This patriotic F-16 is being flown by Scott Harris in Expert class. It’s modeled from a Skymaster kit with a 65-inch wingspan and powered by a JetCat Titan turbine with Skymaster retracts and brakes. It was one of several jets in the competition flying against World War I biplanes, the nimble fighters of World War II, and all types of civilian aircraft. Read about our cover selection process. Stan Alexander photo.

Comments


( ! ) Fatal error: Uncaught TypeError: Drupal\Core\Database\StatementWrapperIterator::__construct(): Argument #2 ($clientConnection) must be of type object, null given, called in /var/www/html/web/core/lib/Drupal/Core/Database/Connection.php on line 441 and defined in /var/www/html/web/core/lib/Drupal/Core/Database/StatementWrapperIterator.php on line 38
( ! ) TypeError: Drupal\Core\Database\StatementWrapperIterator::__construct(): Argument #2 ($clientConnection) must be of type object, null given, called in /var/www/html/web/core/lib/Drupal/Core/Database/Connection.php on line 441 in /var/www/html/web/core/lib/Drupal/Core/Database/StatementWrapperIterator.php on line 38
Call Stack
#TimeMemoryFunctionLocation
12.480928575192_drupal_exception_handler( $exception = class TypeError { protected $message = 'Drupal\\Core\\Database\\StatementWrapperIterator::__construct(): Argument #2 ($clientConnection) must be of type object, null given, called in /var/www/html/web/core/lib/Drupal/Core/Database/Connection.php on line 441'; private string ${Error}string = ''; protected $code = 0; protected string $file = '/var/www/html/web/core/lib/Drupal/Core/Database/StatementWrapperIterator.php'; protected int $line = 38; private array ${Error}trace = [0 => [...], 1 => [...], 2 => [...], 3 => [...], 4 => [...], 5 => [...], 6 => [...], 7 => [...], 8 => [...], 9 => [...], 10 => [...]]; private ?Throwable ${Error}previous = NULL } ).../bootstrap.inc:0
22.482328495984_drupal_exception_handler_additional( $exception = class TypeError { protected $message = 'Drupal\\Core\\Database\\StatementWrapperIterator::__construct(): Argument #2 ($clientConnection) must be of type object, null given, called in /var/www/html/web/core/lib/Drupal/Core/Database/Connection.php on line 441'; private string ${Error}string = ''; protected $code = 0; protected string $file = '/var/www/html/web/core/lib/Drupal/Core/Database/StatementWrapperIterator.php'; protected int $line = 38; private array ${Error}trace = [0 => [...], 1 => [...], 2 => [...], 3 => [...], 4 => [...], 5 => [...], 6 => [...], 7 => [...], 8 => [...], 9 => [...], 10 => [...]]; private ?Throwable ${Error}previous = NULL }, $exception2 = class TypeError { protected $message = 'Drupal\\Core\\Database\\StatementWrapperIterator::__construct(): Argument #2 ($clientConnection) must be of type object, null given, called in /var/www/html/web/core/lib/Drupal/Core/Database/Connection.php on line 441'; private string ${Error}string = ''; protected $code = 0; protected string $file = '/var/www/html/web/core/lib/Drupal/Core/Database/StatementWrapperIterator.php'; protected int $line = 38; private array ${Error}trace = [0 => [...], 1 => [...], 2 => [...], 3 => [...], 4 => [...], 5 => [...], 6 => [...], 7 => [...], 8 => [...], 9 => [...], 10 => [...], 11 => [...], 12 => [...], 13 => [...]]; private ?Throwable ${Error}previous = NULL } ).../bootstrap.inc:126
32.482328495984error_displayable( $error = ??? ).../bootstrap.inc:142
42.482328495984_drupal_get_error_level( ).../errors.inc:118
52.482328495984Drupal::config( $name = 'system.logging' ).../errors.inc:331
62.482328495984Drupal\Core\Config\ConfigFactory->get( $name = 'system.logging' ).../Drupal.php:421
72.482328495984Drupal\Core\Config\ConfigFactory->doGet( $name = 'system.logging', $immutable = ??? ).../ConfigFactory.php:89
82.482328496200Drupal\Core\Config\ConfigFactory->doLoadMultiple( $names = [0 => 'system.logging'], $immutable = TRUE ).../ConfigFactory.php:104
92.482328496280Drupal\Core\Config\CachedStorage->readMultiple( $names = [0 => 'system.logging'] ).../ConfigFactory.php:165
102.482428496904Drupal\Core\Cache\ChainedFastBackend->getMultiple( $cids = [0 => 'system.logging'], $allow_invalid = ??? ).../CachedStorage.php:87
112.482428498928Drupal\Core\Cache\DatabaseBackend->getMultiple( $cids = [0 => 'system.logging'], $allow_invalid = FALSE ).../ChainedFastBackend.php:187
122.482428500088Drupal\Core\Database\Connection->query( $query = 'SELECT [cid], [data], [created], [expire], [serialized], [tags], [checksum] FROM {cache_config} WHERE [cid] IN ( :cids[] ) ORDER BY [cid]', $args = [':cids[]' => [0 => 'system.logging']], $options = ??? ).../DatabaseBackend.php:131
132.482428501136Drupal\Core\Database\Connection->prepareStatement( $query = 'SELECT [cid], [data], [created], [expire], [serialized], [tags], [checksum] FROM {cache_config} WHERE [cid] IN ( :cids__0 ) ORDER BY [cid]', $options = ['fetch' => enum Drupal\Core\Database\Statement\FetchAs::Object, 'allow_delimiter_in_query' => FALSE, 'allow_square_brackets' => FALSE, 'pdo' => []], $allow_row_count = ??? ).../Connection.php:664
142.482428501648Drupal\Core\Database\StatementWrapperIterator->__construct( $connection = class Drupal\mysql\Driver\Database\mysql\Connection { protected $target = 'default'; protected $key = 'default'; protected $logger = NULL; protected $driverClasses = []; protected $statementWrapperClass = 'Drupal\\Core\\Database\\StatementWrapperIterator'; protected $transactionalDDLSupport = FALSE; protected $connection = NULL; protected $connectionOptions = ['database' => 'dpl-emyfalwraj', 'username' => 'whdfofouxn', 'password' => 'hmeomeiukl', 'prefix' => '', 'host' => 'devpanel-cluster-agebjmjp-aurora-cluster.cluster-coyf2dezrpfe.us-east-2.rds.amazonaws.com', 'port' => '3306', 'collation' => 'utf8mb4_general_ci', 'isolation_level' => 'READ COMMITTED', 'namespace' => 'Drupal\\mysql\\Driver\\Database\\mysql', 'driver' => 'mysql', 'autoload' => 'core/modules/mysql/src/Driver/Database/mysql/', 'pdo' => [...], 'init_commands' => [...]]; protected $schema = NULL; protected string $prefix = ''; protected array $tablePlaceholderReplacements = [0 => '"', 1 => '"']; protected $escapedTables = ['cache_container' => 'cache_container', 'cache_page' => 'cache_page', 'cache_config' => 'cache_config', 'config' => 'config', 'cache_discovery' => 'cache_discovery', 'cache_bootstrap' => 'cache_bootstrap', 'path_alias' => 'path_alias', 'cache_data' => 'cache_data', 'router' => 'router', 'cache_entity' => 'cache_entity', 'cache_routes' => 'cache_routes', 'cache_dynamic_page_cache' => 'cache_dynamic_page_cache', 'cache_render' => 'cache_render', 'cache_default' => 'cache_default', 'node_field_data' => 'node_field_data', 'node__field_articles' => 'node__field_articles', 'media' => 'media', 'media_field_data' => 'media_field_data', 'media_revision' => 'media_revision', 'media__field_media_document' => 'media__field_media_document', 'file_managed' => 'file_managed', 's3fs_file' => 's3fs_file', 'semaphore' => 'semaphore', 'node' => 'node', 'node_revision' => 'node_revision', 'node__body' => 'node__body', 'node__comment_node_page' => 'node__comment_node_page', 'node__field_add_to_slideshow' => 'node__field_add_to_slideshow', 'node__field_metatag' => 'node__field_metatag', 'node__field_slide_image' => 'node__field_slide_image', 'node__layout_builder__layout' => 'node__layout_builder__layout', 'comment_entity_statistics' => 'comment_entity_statistics', 'node__ai_automator_status' => 'node__ai_automator_status', 'node__comment' => 'node__comment', 'node__comment_node_article' => 'node__comment_node_article', 'node__field_lead_image' => 'node__field_lead_image', 'node__field_summary' => 'node__field_summary', 'node__field_tags' => 'node__field_tags', 'media__field_media_image' => 'media__field_media_image', 'key_value' => 'key_value', 'cache_menu' => 'cache_menu', 'menu_tree' => 'menu_tree', 'users_data' => 'users_data', 'cachetags' => 'cachetags']; protected $escapedFields = ['' => '', 'collection' => '"collection"', 'name' => '"name"', 'config.name' => '"config"."name"', 'base_table.status' => '"base_table"."status"', 'base_table.alias' => '"base_table"."alias"', 'base_table.langcode' => '"base_table"."langcode"', 'base_table.id' => '"base_table"."id"', 'base_table.path' => '"base_table"."path"', 'cid' => '"cid"', 'expire' => '"expire"', 'created' => '"created"', 'tags' => '"tags"', 'checksum' => '"checksum"', 'data' => '"data"', 'serialized' => '"serialized"', 'node_field_data.status' => '"node_field_data"."status"', 'node_field_data.created' => '"node_field_data"."created"', 'node_field_data.nid' => '"node_field_data"."nid"', 'node_field_data_created' => '"node_field_data_created"', 'base_table.uuid' => '"base_table"."uuid"', 'media_field_data.default_langcode' => '"media_field_data"."default_langcode"', 'base_table.vid' => '"base_table"."vid"', 'base_table.mid' => '"base_table"."mid"', 'base.mid' => '"base"."mid"', 'revision.vid' => '"revision"."vid"', 'revision.langcode' => '"revision"."langcode"', 'revision.revision_user' => '"revision"."revision_user"', 'revision.revision_created' => '"revision"."revision_created"', 'revision.revision_log_message' => '"revision"."revision_log_message"', 'revision.revision_default' => '"revision"."revision_default"', 'base.bundle' => '"base"."bundle"', 'base.uuid' => '"base"."uuid"', '[media_field_data].[mid]' => '"media_field_data"."mid"', 'media_field_data.langcode' => '"media_field_data"."langcode"', 'media__field_media_document.field_media_document_target_id' => '"media__field_media_document"."field_media_document_target_id"', 'media__field_media_document.field_media_document_display' => '"media__field_media_document"."field_media_document_display"', 'media__field_media_document.field_media_document_description' => '"media__field_media_document"."field_media_document_description"', 'base.fid' => '"base"."fid"', 'base.langcode' => '"base"."langcode"', 'base.uid' => '"base"."uid"', 'base.filename' => '"base"."filename"', 'base.uri' => '"base"."uri"', 'base.filemime' => '"base"."filemime"', 'base.filesize' => '"base"."filesize"', 'base.status' => '"base"."status"', 'base.created' => '"base"."created"', 'base.changed' => '"base"."changed"', 'value' => '"value"', 'uri' => '"uri"', 'bundle' => '"bundle"', 'uuid' => '"uuid"', 'prompt' => '"prompt"', 'operation_type' => '"operation_type"', 'provider' => '"provider"', 'model' => '"model"', 'output_text' => '"output_text"', 'configuration' => '"configuration"', 'extra_data' => '"extra_data"', 'tokens_input' => '"tokens_input"', 'tokens_output' => '"tokens_output"', 'tokens_total' => '"tokens_total"', 'tokens_reasoning' => '"tokens_reasoning"', 'tokens_cached' => '"tokens_cached"', 'response_text' => '"response_text"', 'entity_id' => '"entity_id"', 'revision_id' => '"revision_id"', 'delta' => '"delta"', 'langcode' => '"langcode"', 'tags_value' => '"tags_value"', 'base.nid' => '"base"."nid"', 'revision.revision_uid' => '"revision"."revision_uid"', 'revision.revision_timestamp' => '"revision"."revision_timestamp"', 'revision.revision_log' => '"revision"."revision_log"', 'base.type' => '"base"."type"', '[node_field_data].[nid]' => '"node_field_data"."nid"', 'node_field_data.langcode' => '"node_field_data"."langcode"', 'node__body.body_value' => '"node__body"."body_value"', 'node__body.body_summary' => '"node__body"."body_summary"', 'node__body.body_format' => '"node__body"."body_format"', 'node__comment_node_page.comment_node_page_status' => '"node__comment_node_page"."comment_node_page_status"', 'node__field_add_to_slideshow.field_add_to_slideshow_value' => '"node__field_add_to_slideshow"."field_add_to_slideshow_value"', 'node__field_metatag.field_metatag_value' => '"node__field_metatag"."field_metatag_value"', 'node__field_slide_image.field_slide_image_target_id' => '"node__field_slide_image"."field_slide_image_target_id"', '[node__layout_builder__layout].[entity_id]' => '"node__layout_builder__layout"."entity_id"', '[node__layout_builder__layout].[deleted]' => '"node__layout_builder__layout"."deleted"', 'node__layout_builder__layout.entity_id' => '"node__layout_builder__layout"."entity_id"', 'node__layout_builder__layout.langcode' => '"node__layout_builder__layout"."langcode"', 'node__layout_builder__layout.layout_builder__layout_section' => '"node__layout_builder__layout"."layout_builder__layout_section"', 'node__layout_builder__layout.delta' => '"node__layout_builder__layout"."delta"', 'base.default_langcode' => '"base"."default_langcode"', '[node__layout_builder__layout].[delta]' => '"node__layout_builder__layout"."delta"', 'ces.entity_id' => '"ces"."entity_id"', 'ces.entity_type' => '"ces"."entity_type"', 'node__ai_automator_status.ai_automator_status_value' => '"node__ai_automator_status"."ai_automator_status_value"', 'node__comment.comment_status' => '"node__comment"."comment_status"', 'node__comment_node_article.comment_node_article_status' => '"node__comment_node_article"."comment_node_article_status"', 'node__field_lead_image.field_lead_image_target_id' => '"node__field_lead_image"."field_lead_image_target_id"', 'node__field_summary.field_summary_value' => '"node__field_summary"."field_summary_value"', 'node__field_summary.field_summary_format' => '"node__field_summary"."field_summary_format"', '[node__field_articles].[entity_id]' => '"node__field_articles"."entity_id"', '[node__field_articles].[deleted]' => '"node__field_articles"."deleted"', '[node__field_tags].[entity_id]' => '"node__field_tags"."entity_id"', '[node__field_tags].[deleted]' => '"node__field_tags"."deleted"', 'delta_join.id' => '"delta_join"."id"', 'delta_join.langcode' => '"delta_join"."langcode"', 'node__field_articles.field_articles_target_id' => '"node__field_articles"."field_articles_target_id"', 'node__field_articles.delta' => '"node__field_articles"."delta"', 'node__field_tags.field_tags_target_id' => '"node__field_tags"."field_tags_target_id"', 'node__field_tags.delta' => '"node__field_tags"."delta"', 'node__field_articles.entity_id' => '"node__field_articles"."entity_id"', 'node__field_articles.langcode' => '"node__field_articles"."langcode"', 'node__field_tags.entity_id' => '"node__field_tags"."entity_id"', 'node__field_tags.langcode' => '"node__field_tags"."langcode"', '[delta_join].[delta]' => '"delta_join"."delta"', 'nid' => '"nid"', 'n.created' => '"n"."created"', 'media__field_media_image.field_media_image_target_id' => '"media__field_media_image"."field_media_image_target_id"', 'media__field_media_image.field_media_image_alt' => '"media__field_media_image"."field_media_image_alt"', 'media__field_media_image.field_media_image_title' => '"media__field_media_image"."field_media_image_title"', 'media__field_media_image.field_media_image_width' => '"media__field_media_image"."field_media_image_width"', 'media__field_media_image.field_media_image_height' => '"media__field_media_image"."field_media_image_height"', 'route_name' => '"route_name"', 'route_param_key' => '"route_param_key"', 'menu_name' => '"menu_name"', 'menu_tree.menu_name' => '"menu_tree"."menu_name"', 'menu_tree.route_name' => '"menu_tree"."route_name"', 'menu_tree.route_parameters' => '"menu_tree"."route_parameters"', ...]; protected $escapedAliases = ['name' => '"name"', 'config' => '"config"', 'id' => '"id"', 'path' => '"path"', 'alias' => '"alias"', 'langcode' => '"langcode"', 'base_table' => '"base_table"', 'node_field_data_created' => '"node_field_data_created"', 'nid' => '"nid"', 'node_field_data' => '"node_field_data"', 'node__field_articles' => '"node__field_articles"', 'vid' => '"vid"', 'mid' => '"mid"', 'media_field_data' => '"media_field_data"', 'revision_user' => '"revision_user"', 'revision_created' => '"revision_created"', 'revision_log_message' => '"revision_log_message"', 'revision_default' => '"revision_default"', 'bundle' => '"bundle"', 'uuid' => '"uuid"', 'isDefaultRevision' => '"isDefaultRevision"', 'base' => '"base"', 'revision' => '"revision"', 'media_field_data__langcode' => '"media_field_data__langcode"', 'field_media_document_target_id' => '"field_media_document_target_id"', 'field_media_document_display' => '"field_media_document_display"', 'field_media_document_description' => '"field_media_document_description"', 'media__field_media_document' => '"media__field_media_document"', 'fid' => '"fid"', 'uid' => '"uid"', 'filename' => '"filename"', 'uri' => '"uri"', 'filemime' => '"filemime"', 'filesize' => '"filesize"', 'status' => '"status"', 'created' => '"created"', 'changed' => '"changed"', 's' => '"s"', 'revision_uid' => '"revision_uid"', 'revision_timestamp' => '"revision_timestamp"', 'revision_log' => '"revision_log"', 'type' => '"type"', 'node_field_data__langcode' => '"node_field_data__langcode"', 'body_value' => '"body_value"', 'body_summary' => '"body_summary"', 'body_format' => '"body_format"', 'comment_node_page_status' => '"comment_node_page_status"', 'field_add_to_slideshow_value' => '"field_add_to_slideshow_value"', 'field_metatag_value' => '"field_metatag_value"', 'field_slide_image_target_id' => '"field_slide_image_target_id"', 'node__body' => '"node__body"', 'node__comment_node_page' => '"node__comment_node_page"', 'node__field_add_to_slideshow' => '"node__field_add_to_slideshow"', 'node__field_metatag' => '"node__field_metatag"', 'node__field_slide_image' => '"node__field_slide_image"', 'layout_builder__layout_section' => '"layout_builder__layout_section"', 'layout_builder__layout_delta' => '"layout_builder__layout_delta"', 'base_default_langcode' => '"base_default_langcode"', 'node__layout_builder__layout' => '"node__layout_builder__layout"', 'ces' => '"ces"', 'ai_automator_status_value' => '"ai_automator_status_value"', 'comment_status' => '"comment_status"', 'comment_node_article_status' => '"comment_node_article_status"', 'field_lead_image_target_id' => '"field_lead_image_target_id"', 'field_summary_value' => '"field_summary_value"', 'field_summary_format' => '"field_summary_format"', 'node__ai_automator_status' => '"node__ai_automator_status"', 'node__comment' => '"node__comment"', 'node__comment_node_article' => '"node__comment_node_article"', 'node__field_lead_image' => '"node__field_lead_image"', 'node__field_summary' => '"node__field_summary"', 'field_articles_target_id' => '"field_articles_target_id"', 'field_articles_delta' => '"field_articles_delta"', 'field_tags_target_id' => '"field_tags_target_id"', 'field_tags_delta' => '"field_tags_delta"', 'delta' => '"delta"', 'node__field_tags' => '"node__field_tags"', 'delta_join' => '"delta_join"', 'n' => '"n"', 'field_media_image_target_id' => '"field_media_image_target_id"', 'field_media_image_alt' => '"field_media_image_alt"', 'field_media_image_title' => '"field_media_image_title"', 'field_media_image_width' => '"field_media_image_width"', 'field_media_image_height' => '"field_media_image_height"', 'media__field_media_image' => '"media__field_media_image"', 'menu_name' => '"menu_name"', 'route_name' => '"route_name"', 'route_parameters' => '"route_parameters"', 'url' => '"url"', 'title' => '"title"', 'description' => '"description"', 'parent' => '"parent"', 'weight' => '"weight"', 'options' => '"options"', 'expanded' => '"expanded"', 'enabled' => '"enabled"', 'provider' => '"provider"', 'metadata' => '"metadata"', 'class' => '"class"', 'form_class' => '"form_class"', 'menu_tree' => '"menu_tree"', 'maximum_revision_id' => '"maximum_revision_id"', 'subquery_base_table' => '"subquery_base_table"', 'sq_base_table' => '"sq_base_table"', 'ud' => '"ud"', 'expression' => '"expression"', 'cachetags' => '"cachetags"']; protected $identifierQuotes = [0 => '"', 1 => '"']; private array ${Drupal\Core\Database\Connection}enabledEvents = []; protected Drupal\Core\Database\Transaction\TransactionManagerInterface $transactionManager = class Drupal\mysql\Driver\Database\mysql\TransactionManager { private ?string ${Drupal\Core\Database\Transaction\TransactionManagerBase}rootId = '412188705870b5eea4a9527a'; private array ${Drupal\Core\Database\Transaction\TransactionManagerBase}stack = [...]; private array ${Drupal\Core\Database\Transaction\TransactionManagerBase}voidedItems = [...]; private array ${Drupal\Core\Database\Transaction\TransactionManagerBase}postTransactionCallbacks = [...]; private Drupal\Core\Database\Transaction\ClientConnectionTransactionState ${Drupal\Core\Database\Transaction\TransactionManagerBase}connectionTransactionState = enum Drupal\Core\Database\Transaction\ClientConnectionTransactionState::Committed; public bool $triggerWarningWhenUnpilingOnVoidTransaction = FALSE; protected readonly Drupal\Core\Database\Connection $connection = ... }; private $serverVersion = NULL }, $clientConnection = NULL, $query = 'SELECT "cid", "data", "created", "expire", "serialized", "tags", "checksum" FROM "cache_config" WHERE "cid" IN ( :cids__0 ) ORDER BY "cid"', $options = [], $rowCountEnabled = FALSE ).../Connection.php:441