Skip to main content

BMJR Models Swami

Written by Jerry Smith As featured on page 61 in the March 2013 issue of Model Aviation. As featured in the Model Aviation tablet app. SPECIFICATIONS Manufacturer: BMJR Models Model type: Nostalgic Old-Timer Skill level: Intermediate pilot; intermediate builder Wingspan: 46 inches Wing area: 307 square inches Airfoil: Flat bottom, undercambered Length: 30 inches Weight: 18.5 ounces Power system: 150- to 300-watt outrunner motor Radio: Three-channel with two microservos Construction: Balsa and light plywood Price: $92 Test Model Details Motor: Scorpion SII-2215-900…

You've read your 3 free articles

Sign in with your AMA account for unlimited access, or join AMA to become a member.


( ! ) 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
12.902627587640_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
22.904127503704_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 => [...]]; private ?Throwable ${Error}previous = NULL } ).../bootstrap.inc:126
32.904127503704error_displayable( $error = ??? ).../bootstrap.inc:142
42.904127503704_drupal_get_error_level( ).../errors.inc:118
52.904127503704Drupal::config( $name = 'system.logging' ).../errors.inc:331
62.904127503704Drupal\Core\Config\ConfigFactory->get( $name = 'system.logging' ).../Drupal.php:421
72.904127503704Drupal\Core\Config\ConfigFactory->doGet( $name = 'system.logging', $immutable = ??? ).../ConfigFactory.php:89
82.904127503920Drupal\Core\Config\ConfigFactory->doLoadMultiple( $names = [0 => 'system.logging'], $immutable = TRUE ).../ConfigFactory.php:104
92.904127504032Drupal\Core\Config\CachedStorage->readMultiple( $names = [0 => 'system.logging'] ).../ConfigFactory.php:165
102.904127504656Drupal\Core\Cache\DatabaseBackend->getMultiple( $cids = [0 => 'system.logging'], $allow_invalid = ??? ).../CachedStorage.php:87
112.904127505816Drupal\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
122.904127506864Drupal\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
132.904227507376Drupal\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_jsvvhikdao', 'username' => 'vdmompnaig', 'password' => 'jC21cXfOuRnJw5HFKE', 'host' => 'devpanel-cluster-agebjmjp-aurora-cluster.cluster-coyf2dezrpfe.us-east-2.rds.amazonaws.com', 'port' => '3306', 'driver' => 'mysql', 'prefix' => '', 'collation' => 'utf8mb4_general_ci', 'namespace' => 'Drupal\\mysql\\Driver\\Database\\mysql', 'autoload' => 'core/modules/mysql/src/Driver/Database/mysql/', 'pdo' => [...], 'init_commands' => [...]]; protected $schema = class Drupal\mysql\Driver\Database\mysql\Schema { protected $connection = ...; protected $placeholder = 6; protected $defaultSchema = 'public'; protected $uniqueIdentifier = '6b30d4ff601f882458a347ef'; protected $mysqlStringTypes = [...] }; 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', 'magazine_paywall_anon_views' => 'magazine_paywall_anon_views', '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_image' => 'media__field_media_image', 'file_managed' => 'file_managed', 's3fs_file' => 's3fs_file', 'semaphore' => 'semaphore', 'key_value' => 'key_value', 'cache_menu' => 'cache_menu', 'menu_tree' => 'menu_tree', 'node_revision' => 'node_revision', '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"', 'table_schema' => '"table_schema"', 'table_name' => '"table_name"', 'table_type' => '"table_type"', 'viewer_key' => '"viewer_key"', 'viewed' => '"viewed"', 'v.nid' => '"v"."nid"', 'v.viewed' => '"v"."viewed"', '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"', '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_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_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"', '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"', 'nid' => '"nid"', 'n.created' => '"n"."created"', '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"', 'menu_tree.url' => '"menu_tree"."url"', 'menu_tree.title' => '"menu_tree"."title"', 'menu_tree.description' => '"menu_tree"."description"', 'menu_tree.parent' => '"menu_tree"."parent"', 'menu_tree.weight' => '"menu_tree"."weight"', 'menu_tree.options' => '"menu_tree"."options"', 'menu_tree.expanded' => '"menu_tree"."expanded"', 'menu_tree.enabled' => '"menu_tree"."enabled"', 'menu_tree.provider' => '"menu_tree"."provider"', 'menu_tree.metadata' => '"menu_tree"."metadata"', 'menu_tree.class' => '"menu_tree"."class"', 'menu_tree.form_class' => '"menu_tree"."form_class"', 'menu_tree.id' => '"menu_tree"."id"', 'depth' => '"depth"', 'weight' => '"weight"', 'id' => '"id"', 'base_table.nid' => '"base_table"."nid"', 'subquery_base_table.nid' => '"subquery_base_table"."nid"', 'module' => '"module"', 'uid' => '"uid"', 'expanded' => '"expanded"', 'has_children' => '"has_children"', 'enabled' => '"enabled"', 'parent' => '"parent"', 'tag' => '"tag"', 'type' => '"type"', 'message' => '"message"', 'variables' => '"variables"', 'severity' => '"severity"', 'link' => '"link"', 'location' => '"location"', 'referer' => '"referer"', 'hostname' => '"hostname"', 'timestamp' => '"timestamp"']; protected $escapedAliases = ['name' => '"name"', 'config' => '"config"', 'id' => '"id"', 'path' => '"path"', 'alias' => '"alias"', 'langcode' => '"langcode"', 'base_table' => '"base_table"', 'nid' => '"nid"', 'viewed' => '"viewed"', 'v' => '"v"', 'node_field_data_created' => '"node_field_data_created"', '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_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"', 'fid' => '"fid"', 'uid' => '"uid"', 'filename' => '"filename"', 'uri' => '"uri"', 'filemime' => '"filemime"', 'filesize' => '"filesize"', 'status' => '"status"', 'created' => '"created"', 'changed' => '"changed"', 's' => '"s"', 'n' => '"n"', '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 = '246a36f235df7002154af26c'; 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